Papers Projects Dissertation Guidance http://mechanical-engineering.in/forum Sun, 13 May 2012 20:41:50 +0000 1100 need patent drawings for power plant proposal http://mechanical-engineering.in/forum/topic/9687-need-patent-drawings-for-power-plant-proposal/ http://fusiontoelectricity.weebly.com/]]> Sun, 13 May 2012 20:41:50 +0000 http://mechanical-engineering.in/forum/topic/9687-need-patent-drawings-for-power-plant-proposal/ Antimony mining equipment in Bolivia for sale http://mechanical-engineering.in/forum/topic/9683-antimony-mining-equipment-in-bolivia-for-sale/
The Bolivian government nationalized a small antimony smelter in the western province of Oruro in May 2010. The smelter, which has been idle for several years, had belonged to Sinchi Wayra, (Gold Ore Processing Plant)a subsidiary of Switzerland’s Glencore International AG. Bolivia’s government had previously expropriated EMV (also a Glencore asset) in February 2007.

The new Bolivian state tin producer Empresa Metalurgica Vinto (EMV) is to begin work to restart operations at the antimony smelter in Oruro in September 2010. Empresa Metalurgica Vinto is also carrying out exploration work with a view to increasing antimony reserves.(Copper Ore Processing Plant)
Planet Resource Recovery, a US petrochemicals firm, has agreed a joint venture with Franklin Mining to develop and operate the San Antonio de Turiri antimony mine in Bolivia, where it plans to introduce a new mining technique.
In terms of the agreement, the San Antonio de Turiri mine will be wholly owned by Planet’s subsidiary Raptor Ventures, to which Franklin Mining has assigned all of its rights and interests in the project. The mine is located within Bolivia’s primary antimony belt and comprises three antimony vein structures.(Chrome Ore Beneficiation Plant)
Antimony mining equipment in Bolivia for sale

Antimony Ore Crusher

Antimony ore crusher, including jaw crusher, impact crusher, cone crusher. Antimony ore crusher in the extraction of antimony is essential, is the necessary equipment for extracting antimony. Mobile crushing station is the first choice contractor of ore can be used in a geographic environment, mines, convenient and saves a lot of material and savings. Furthermore, we provide screening and washing equipment, these are the most appropriate goods. For those who have any queries, please call us for more details.(Kaolin Processing Plant)
Antimony Ore Grinding Mill

Antimony ore inside the selection and extraction process, the milling products are essential. Extraction of antimony ore was selected to go through, and then washing;finally, hand washing and flotation operations.Antimony Ore should be processed through the antimony grinding mill and flotation can be executed hand jobs. Our company mainly provides the antimony mill are: ball mill, vertical mill,Trapezium Mill . If you have any queries, please e mail us for details.(Bentonite Processing Plant)
Ball Mill: We has Two decades of production experience, advanced ball mill technology, strong technical, reasonble ball mill price,welcome consumers to see consultation.The Ball Mill can be a key equipment for grinding the crushed materials, and also the ball mill is trusted in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. As well as the ball mill can grind various ores along with other materials with dry type and wet type. There are two forms of ball mill, grate type and overfall type as a result of different ways of discharging material.
Vertical Roller Mill is my company based on the extensive use of advanced technology at home and abroad, and combine many years of experience in a variety of mill production, design and development of advanced grinding equipment. It can be widely used in cement, electric power, metallurgy, chemical industry, non-metallic mining and other industries. Used to make the block, granular and powder materials grind into a powder material as required, is a ideal milling industry device which contain crushing, drying, grinding, grading conveyor in one machine.(Trituradoras de Piedra)
We possess the good service to our customers, when they can’t install the machines, we could send our technician arrived at your location, and install for you. We make every endeavor to satisfy our customers]]> Thu, 10 May 2012 07:23:50 +0000 http://mechanical-engineering.in/forum/topic/9683-antimony-mining-equipment-in-bolivia-for-sale/ SLCD http://mechanical-engineering.in/forum/topic/9670-slcd/ I need to start with the lobes and i stuck because i'm not sure what stresses are develop there.
It is true that there is compression(from the wall) and bending from the axle?
I want to design cam with 4 lobes.

Here is info about this device (from wikipedia):http://en.wikipedia.org/wiki/Spring-loaded_camming_device]]> Sat, 14 Apr 2012 15:25:34 +0000 http://mechanical-engineering.in/forum/topic/9670-slcd/ SLCD http://mechanical-engineering.in/forum/topic/9669-slcd/ I need to start with the lobes and i stuck because i'm not sure what stresses are develop there.
It is true that there is compression(from the wall) and bending from the axle?
I want to design cam with 4 lobes.

Here is info about this device (from wikipedia):http://en.wikipedia.org/wiki/Spring-loaded_camming_device]]> Sat, 14 Apr 2012 15:25:28 +0000 http://mechanical-engineering.in/forum/topic/9669-slcd/ gas recovery http://mechanical-engineering.in/forum/topic/9651-gas-recovery/ my project is to recover exhaust gas energy coming from gas engine

the temp of gas=230c

i want utilize this energy to heat water which is use in boiler

inlet temp of water=30c
out come we expected=90c


i think shell and tube is best for it
bt dont know how to design it

plzz help me on this

jaiminthejack@gmail.com]]> Sat, 10 Mar 2012 17:51:09 +0000 http://mechanical-engineering.in/forum/topic/9651-gas-recovery/ <![CDATA[hi frnds,i'm anand studying b.tech 3rd year mechanical and interested in thermal streem so,please suggest the mini projects which is better.....]]> http://mechanical-engineering.in/forum/topic/9564-hi-frndsim-anand-studying-btech-3rd-year-mechanical-and-interested-in-thermal-streem-soplease-suggest-the-mini-projects-which-is-better/ suggest mini projects in thermal streem........... Wed, 21 Dec 2011 19:02:51 +0000 http://mechanical-engineering.in/forum/topic/9564-hi-frndsim-anand-studying-btech-3rd-year-mechanical-and-interested-in-thermal-streem-soplease-suggest-the-mini-projects-which-is-better/ Nylon 66 30% glass filled material http://mechanical-engineering.in/forum/topic/9541-nylon-66-30-glass-filled-material/
I need to know the minimum wall thickness for Nylon 66 30% glass filled material.. injection moulded or casted..]]> Wed, 30 Nov 2011 09:05:00 +0000 http://mechanical-engineering.in/forum/topic/9541-nylon-66-30-glass-filled-material/ COKE OVEN DESIGN http://mechanical-engineering.in/forum/topic/9449-coke-oven-design/ CARBONIZATION OF NON-METALLURGICAL COAL TO METALLUGIGAL COKE USING PRESSURE AND BINDERS. THE PROCESS TAKES PLACE IN A SPECIALLY DESIGNED OVEN CAPABLE OF WITSTANDING THE STRESS DUE TO APPLIES PRESSURE AND COAL SWELLING. Tue, 23 Aug 2011 23:37:45 +0000 http://mechanical-engineering.in/forum/topic/9449-coke-oven-design/ Help Me.............. http://mechanical-engineering.in/forum/topic/9415-help-me/            Iam doing M-tech on manufacturing and completed my one year pls give me suggesion on which topic i can do thesis. if do you have any thieses pls gie me for ref. purpose so ican understand how i proceed.]]> Wed, 22 Jun 2011 05:57:37 +0000 http://mechanical-engineering.in/forum/topic/9415-help-me/ CELLULAR METAL http://mechanical-engineering.in/forum/topic/9346-cellular-metal/

By introducing newest cutting technologies "Metal foam" or "metallic foam" has become a very popular term which is nowadays used for almost any kind of metallic material which contains voids. The first record of metal foams dates back to the late 1940's, when “Benjamin Sosnick” filed a patent on a "Process for making Foam like Mass of Metal" as discussed below. But now a days. More recently, orthopedic device manufacturers have started producing devices that use either foam construction or metal foam coatings to achieve the desired levels of direct structural and functional connection between living bone.


Metal foam is a foam — gas bubble-filled substance — made out of metal, frequently aluminium. Metal foam comes in two varieties, closed-cell foam, with sealed pores, and open-cell foam, with open pores. Metal foams have a very high porosity, where 75-95% of the volume of the material is empty, filled by air or hydrogen. Metal foams retain many of the characteristics of the metal used to produce them, such as non-flammability. On the other hand, metal foams are less conductive than solid metal, and are substantially weaker, though rarely weaker than wood. Metal foams are easily recyclable back into the original metal, making them more reusable than polymer foams.

Types Of Metal Foams:-

1)Open-cell metal foams:-

Open celled metal foams are usually replicas using open-celled polyurethane foams as a skeleton and have a wide variety of applications including heat exchangers ,compact electronics cooling, cryogen tanks,  energy absorption, flow diffusion and lightweight optics. Due to the high cost of the material it is most typically used in advanced technology aerospace and manufacturing.

2)Closed-cell metal foams:-

are primarily used as an impact-absorbing material, similarly to the polymer foams in a bicycle helmet but for higher impact loads. Unlike many polymer foams, metal foams remain deformed after impact and can therefore only be used once. They are light (typically 10–25% of the density of the metal they are made of, which is usually aluminium) and stiff, and are frequently proposed as a lightweight structural material. However, they have not yet been widely used for this purpose.
Closed-cell foams retain the fire resistant and recycling capability of other metallic foams but add an ability to float in water.

*MANUFACTURING:-

1) Foaming of Melts by Gas Injection (Hydro/Alcan) :-
The first method of foaming aluminium and aluminium alloys is being exploited by Hydro Aluminium.The first step comprises the preparation of an aluminium melt containing one of these substances, making it a metal-matrix composite (MMC). This step reportedly requires sophisticated mixing techniques to ensure a uniform distribution of particles. A variety of aluminium alloys can be used. The melt is foamed in a second step by injecting gases (air, nitrogen, argon) into it using specially designed rotating impellers or vibrating nozzles. These generate very fine gas bubbles in the melt and distribute them uniformly. The resultant viscous mixture of bubbles and metal melt floats up to the surface of the liquid where it turns into a fairly dry liquid foam as the liquid metal drains out. Because ceramic particles are in the melt, the foam is relatively stable. It can be pulled off the liquid surface and is then allowed to cool down and solidify.

Folks this is also called as revolution metal's if yu are final year student. Plz make this as project because the "metal sponge" technology not wide spread only china & japan are making of this...]]> Tue, 26 Apr 2011 15:47:56 +0000 http://mechanical-engineering.in/forum/topic/9346-cellular-metal/ Vertical and horizontal calibration for rail track http://mechanical-engineering.in/forum/topic/9289-vertical-and-horizontal-calibration-for-rail-track/       i need to calibrate (vertically and laterally) a rail track monitoring device... can ne1 suggest me how can i achieve it... i need loading upto 20 tonnes for vertical and 12 tonnes for horizontal...]]> Wed, 19 Jan 2011 06:20:14 +0000 http://mechanical-engineering.in/forum/topic/9289-vertical-and-horizontal-calibration-for-rail-track/ ROBOTIX 2011 http://mechanical-engineering.in/forum/topic/9186-robotix-2011/
These are the events for ROBOTIX 2011:  

Pirate Bay - A manual event that takes you right into the pirates' playground. Through the course of three exciting rounds, the bot will have to traverse through different type of terrains, climb inclines and release dummies that are "pirates".

R.A.F.T- An event that seeks solutions to the major challenge that is flood relief.The task is to build a manually controlled robot or a group of robots which can navigate a raft on water and retrieve people marooned.

Further details are available on our website www.robotix.in. In case of any doubts or clarifications, please feel free to post on our online forum www.robotix.in/forum
.

The ROBOTIX Team]]> Wed, 20 Oct 2010 17:57:44 +0000 http://mechanical-engineering.in/forum/topic/9186-robotix-2011/ How do I report a plagiarized dissertation? http://mechanical-engineering.in/forum/topic/9167-how-do-i-report-a-plagiarized-dissertation/ Mon, 27 Sep 2010 08:10:33 +0000 http://mechanical-engineering.in/forum/topic/9167-how-do-i-report-a-plagiarized-dissertation/ Do professors really read our papers if the class has to turn in 20 page papers? http://mechanical-engineering.in/forum/topic/9166-do-professors-really-read-our-papers-if-the-class-has-to-turn-in-20-page-papers/
I mean that's a lot of reading for the professor if he/she has a class of 20-30 and each person turns in a 20 page paper. Do they really read them?]]> Sat, 25 Sep 2010 09:51:18 +0000 http://mechanical-engineering.in/forum/topic/9166-do-professors-really-read-our-papers-if-the-class-has-to-turn-in-20-page-papers/ Anyone has FULL dissertation, thesis, reports or circuits on gps navigation located using gprs.? http://mechanical-engineering.in/forum/topic/9165-anyone-has-full-dissertation-thesis-reports-or-circuits-on-gps-navigation-located-using-gprs/ Sat, 25 Sep 2010 06:22:11 +0000 http://mechanical-engineering.in/forum/topic/9165-anyone-has-full-dissertation-thesis-reports-or-circuits-on-gps-navigation-located-using-gprs/ Project http://mechanical-engineering.in/forum/topic/9106-project/ now i m studing in mech. 3rd year & our team want to make a project related to pure mechanical.
if any one from you can guide us plz make a note or reply.
Thanks
Have a nice time............]]> Thu, 23 Sep 2010 10:37:12 +0000 http://mechanical-engineering.in/forum/topic/9106-project/ Anyone has FULL dissertation, thesis, reports or circuits on gps navigation located using gprs.? http://mechanical-engineering.in/forum/topic/9075-anyone-has-full-dissertation-thesis-reports-or-circuits-on-gps-navigation-located-using-gprs/ Wed, 22 Sep 2010 09:20:29 +0000 http://mechanical-engineering.in/forum/topic/9075-anyone-has-full-dissertation-thesis-reports-or-circuits-on-gps-navigation-located-using-gprs/ Applications of nanotechnology in mechanical engineering? http://mechanical-engineering.in/forum/topic/9048-applications-of-nanotechnology-in-mechanical-engineering/ Tue, 21 Sep 2010 09:27:10 +0000 http://mechanical-engineering.in/forum/topic/9048-applications-of-nanotechnology-in-mechanical-engineering/ Stirling Engines : No Fuel.... No Waste http://mechanical-engineering.in/forum/topic/7215-stirling-engines-no-fuel-no-waste/ check this out :
http://en.wikipedia.org/wiki/Stirling_Engine]]> Thu, 08 Jul 2010 17:04:55 +0000 http://mechanical-engineering.in/forum/topic/7215-stirling-engines-no-fuel-no-waste/ Stirling Engines : No Fuel.... No Waste http://mechanical-engineering.in/forum/topic/7216-stirling-engines-no-fuel-no-waste/ check this out :
http://en.wikipedia.org/wiki/Stirling_Engine]]> Thu, 08 Jul 2010 17:04:55 +0000 http://mechanical-engineering.in/forum/topic/7216-stirling-engines-no-fuel-no-waste/ New Energy http://mechanical-engineering.in/forum/topic/6700-new-energy/
I have discovered a new energy, which was more economically than other energy process.
completes 75 % of work remaining 25 % work is pending.

Hope it will work.

i need all your guidance, suggestions and support.


Yours,
Avs]]> Mon, 14 Jun 2010 10:38:42 +0000 http://mechanical-engineering.in/forum/topic/6700-new-energy/ Free Online lectures by IIT Professors http://mechanical-engineering.in/forum/topic/6449-free-online-lectures-by-iit-professors/ Please follow the following link :
http://nptel.iitm.ac.in/
or
http://www.iitm.ac.in/nptel

Hope we make good use of this high quality online learning resource.]]> Wed, 02 Jun 2010 11:07:54 +0000 http://mechanical-engineering.in/forum/topic/6449-free-online-lectures-by-iit-professors/ Peformance of Two-Stage CO2 Refrigeration Cycles http://mechanical-engineering.in/forum/topic/6291-peformance-of-two-stage-co2-refrigeration-cycles/
Author: Celik, Aydin

Source: University of Maryland

Download Link: Click Here To Download This Report (PDF)]]> Wed, 26 May 2010 06:51:56 +0000 http://mechanical-engineering.in/forum/topic/6291-peformance-of-two-stage-co2-refrigeration-cycles/ Characterization of Polypyrrole/Gold Bilayers for Micro-valve Design http://mechanical-engineering.in/forum/topic/6290-characterization-of-polypyrrolegold-bilayers-for-micro-valve-design/
Author: Fanning, Steven

Source: University of Maryland

Click here to Download this report]]> Wed, 26 May 2010 06:36:17 +0000 http://mechanical-engineering.in/forum/topic/6290-characterization-of-polypyrrolegold-bilayers-for-micro-valve-design/ Is hydrogen fuel cell car feasible..?? http://mechanical-engineering.in/forum/topic/3202-is-hydrogen-fuel-cell-car-feasible/ Wed, 13 Jan 2010 20:24:06 +0000 http://mechanical-engineering.in/forum/topic/3202-is-hydrogen-fuel-cell-car-feasible/ AUTOMATIC GEAR CHANGING BICYCLE http://mechanical-engineering.in/forum/topic/1292-automatic-gear-changing-bicycle/
like..

1-5km/hr in 1st gear

5-10km/hr in 2nd gear

10-14km/hr in 3rd gear

14-25km/hr in 4th gear...


it is a mini project...if u have any suggestions then please give me...

hope that all of u will definately give ur valueable suggestions.....

waiting for ur reply.....]]> Tue, 29 Sep 2009 15:34:06 +0000 http://mechanical-engineering.in/forum/topic/1292-automatic-gear-changing-bicycle/ Correlation of Sinusoidal Sweep Test to Field Random Vibrations http://mechanical-engineering.in/forum/topic/1247-correlation-of-sinusoidal-sweep-test-to-field-random-vibrations/
Contents

1 Notation
2 Introduction
2.1 Background
2.2 Aim of the work
2.3 Description of the work
3 Vibration Tests
3.1 Introduction
3.2 Vibration testing
3.2.1 Categories of Tests
3.2.2 Bounce Test
3.2.3 Sinusoidal Sweep Test
3.2.4 Random Noise Test
3.2.5 Shock Test
4 Fatigue Damage Evaluation
4.1 S-N Curve
4.2 Fatigue life
4.3 Palmgren-Miner Rule
4.3.1 Estimating Cumulative Damage in the Field:
4.3.2 Example
4.3.3 Reliability Model for Fatigue Test
4.4 Fatigue Damage Spectrum
4.4.1 Fatigue damage by a swept sine vibration on a SDOF
4.4.2 Logarithmic Sweep
4.4.3 Estimating Cumulative Damage in a Lab Test
4.4.4 Fatigue Damage Equivalence
4.4.5 Method for calculation of Fatigue Damage spectrum and Correlation with Field data
5 Standard Tests and Methods
5.1 MIL-STD-810F
5.1.1 Method 514-Vibration
5.1.2 Method 516-Shock
5.2 IEC 60721
5.2.1 IEC 60721-4-2
5.3 IEC 60068-2-6 Test-Vibration (sinusoidal)
5.4 IEC 60068-2-6 Test-Shock
6 Environmental Conditions
6.1 Theory
6.1.1 Vibration Sources
6.1.2 Vibration Types
6.1.3 Vibration Forms
6.1.4 Determining a Good Test
6.1.5 Test Parameters
7 Example
8 Calculations and Curves
8.1 Sine Sweep
8.2 Field Test Data
8.2.1 Scatter Plot PSD
9 Results and conclusions
9.1 Correlation of Sinusoidal Sweep Test to Field Test Data
9.2 Sine Sweep Equivalence
9.2.1 Reduction of test time
10 References
Appendix

Author: Praveen Gurindapalli, Jaya Hari Lade

Source: Blekinge Institute of Technology

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Downlaoad URL 2]]> Thu, 10 Sep 2009 04:33:10 +0000 http://mechanical-engineering.in/forum/topic/1247-correlation-of-sinusoidal-sweep-test-to-field-random-vibrations/ Thermo-mechanical Analysis of Encapsulated Ball-Wedge Wire Bonds in Microelectronics, using Raleigh-Ritz Modeling http://mechanical-engineering.in/forum/topic/1246-thermo-mechanical-analysis-of-encapsulated-ball-wedge-wire-bonds-in-microelectronics-using-raleigh-ritz-modeling/
Contents

1 Introduction
1.1 Background and Problem Statement
1.2 Wirebonding in Microelectronics
1.3 Wire Material
1.4 Ball Bonding of Gold Wires
1.5 Failure Mechanisms
1.6 Virtual Qualification
1.7 Scope of the Current Thesis
1.8 Nomenclature and Terminology Used
2 Optimal Ball-Wedge Wire Profile in Unencapsulated Chips
2.1 Ball-Wedge vs. Wedge-Wedge Optimal Profiles
2.2 Approach
2.2.1 Model
2.2.2 Determination of Wire Profile
3 Prediction of Thermo-Mechanical Stresses in Encapsulated CoB Bond Wire
3.1 Development of the Model Guided by 2D Finite Element Analysis (FEA)
4 Results and Discussion
4.1 Determination of Wire Profile and Loop Height in Unencapsulated Ball-Wedge Wire-Bonds
4.2 Comparison of the RR model with FEA for Thermomechanical Analysis of Encapsulated Ball-Wedge Wire-Bond
4.3 Parametric Studies
4.4 Comparison of Test Results [APL, 2005] with Model Predictions
5 Conclusions, Contributions and Suggestions for Future Work
5.1 Conclusions
5.2 Contributions
5.3 Limitations of the Existing Model
5.4 Suggestions for Future Work
Appendix A
Appendix B
Appendix C
Appendix D
References

Author: Jinka, Krishna Kumar

Source: University of Maryland

Download this report

Download URL 2]]> Thu, 10 Sep 2009 04:20:01 +0000 http://mechanical-engineering.in/forum/topic/1246-thermo-mechanical-analysis-of-encapsulated-ball-wedge-wire-bonds-in-microelectronics-using-raleigh-ritz-modeling/ UNCERTAINTY ANALYSIS AND QUALITY ASSURANCE FOR COORDINATE MEASURING SYSTEM SOFTWARE http://mechanical-engineering.in/forum/topic/1245-uncertainty-analysis-and-quality-assurance-for-coordinate-measuring-system-software/
Contents

1. INTRODUCTION
1.1 Coordinate Measuring Systems
1.2 The Problem of Uncertainty
1.3 The Problem of Software Uncertainty
1.4 The NIST ATEP-CMS software testing program
2. BACKGROUND INFORMATION AND LITERATURE SURVEY
2.1 NIST work
2.2 NIST Algorithm Information
2.3 NPL work
2.4 Other documentation
3. LEAST SQUARES FITTING
3.1 The Problem of Least Squares Fitting
3.2 The Need for Least Squares Fitting
3.3 Issues involved in solving Least Squares Fitting Problems
3.4 An Approach to Least Squares Fitting
3.5 Implementation of the Approach
3.6 Results of the Implementation
3.7 An Application of Least Squares Fitting
4. MINIMUM ZONE FITTING
4.1 The Problem of Minimum Zone Fitting
4.2 The Need for Minimum Zone Fitting
4.3 Issues involved in solving Minimum Zone Fitting Problems
4.4 An Approach to Solving Minimum Zone Fitting
4.5 Implementation of the Approach
4.6 Reference vs. Commercial Algorithm Performance
4.7 Results of the Implementation
5. MAXIMUM INSCRIBED AND MINIMUM CIRCUMSCRIBED FITTING
5.1 The Problem of Maximum Inscribed and Minimum Circumscribed Fitting
5.2 The Need for Maximum Inscribed and Minimum Circumscribed Fitting
5.3 Issues involved in solving Maximum Inscribed and Minimum CircumscribedFitting Problems
5.4 An approach to Maximum Inscribed and Minimum Circumscribed Fitting
5.5 Implementation of the Approach
5.6 Reference vs. Commercial Algorithms for Maximum Inscribed and MinimumCircumscribed Fitting
5.7 Results of the Implementation
6. LEAST SQUARES FITTING OF COMPLEX SURFACES
6.1 The Problem of Least Squares Fitting of Complex Surfaces
6.2 The Need for Fitting of Complex Surfaces
6.3 Issues involved in solving Least Squares Fitting of Complex Surfaces Problems
6.4 An Approach to Solving Least Squares Fitting of Complex Surfaces Problems
6.5 Implementation of the Approach
6.6 Results of the Implementation
7. OTHER ISSUES AND FUTURE WORK
7.1 Other Issues Involved in CMS Fitting Software
7.2 Future Work
8. Conclusions
REFERENCES

Author: Lawford, Bonnie
Source: University of Maryland

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Download url 2]]> Thu, 10 Sep 2009 04:00:54 +0000 http://mechanical-engineering.in/forum/topic/1245-uncertainty-analysis-and-quality-assurance-for-coordinate-measuring-system-software/ Rapid Load Path Design of Jet Engine Component using Knowledge Based Engineering http://mechanical-engineering.in/forum/topic/1244-rapid-load-path-design-of-jet-engine-component-using-knowledge-based-engineering/
Contents

1 Abbreviations
2 Introduction
2.1 Background
2.1.1 Objectives
2.2 Requirements
2.3 Conceptual Design
2.3.1 Importance of Conceptual design
3 Knowledge Based Engineering
3.1 Difference between KBE and CAD/CAE
3.1.1 Creation of the Geometry
3.1.2 Non-Geometric Knowledge
3.2 Various KBE tools
3.3 Object Orientation
3.4 Motivations for adopting KBE
3.5 What are the types of products that would benefit from KBE?
3.6 Benefits of KBE
3.6.1 Lead time reduction
3.6.2 Re-Use of Knowledge
3.6.3 Product optimization
3.6.4 Dependency-Tracking
3.6.5 Demand-Driven
3.7 Knowledge Fusion (KF)
3.8 Automation of Engineering Activities
4 Jet Engine
4.1 Principle of Jet engine
5 Intermediate Case (IMC)
5.1 Load Path
5.2 Components of IMC
5.2.1 Outer Ring:
5.2.2 Splitter Box:
5.2.3 Support structure:
5.2.4 Bypass and Core channels
6 Method - Idealization of the Geometry
6.1 Geometry definition
6.1.1 Motivations to adopt Shell Elements
6.1.2 Mid-Shell Representation
6.2 IMC Assembly using KF – Initial Method
6.2.1 Time-Related Problems with the Method
6.2.2 Lack of Functionality
6.2.3 Problems with more number of Classes
7 Wave-Link Procedure (KBE + CAD)
7.1 Creation of the Part-Files
7.1.1 Outer Ring
7.1.2 Splitter Box
7.1.3 Bypass and Core Strut
7.1.4 Bearing Support Structure
7.2 Naming and Dimensioning of Components in Part-Files
7.3 Building IMC Assembly
7.3.1 Assembly of Components
7.3.2 Wave-Linking
7.3.3 Breaking the link of the wave-linked bodies
7.3.4 IMC Assembly
7.3.5 Combining KBE with CAD
7.4 Reference from KF to broken linked bodies
7.5 Input through General Arrangement (GA)
7.5.1 General Arrangement (GA) Solid
7.5.2 General Arrangement (GA) Mid-Shell
7.6 From solid to Mid-Shell
8 Results
9 Conclusion
10 Discussion
11 References
12 Appendices
12.1 Appendix

Author: Loganathan Rajagopal

Source: Blekinge Institute of Technology

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Download URL 2]]> Thu, 10 Sep 2009 03:36:31 +0000 http://mechanical-engineering.in/forum/topic/1244-rapid-load-path-design-of-jet-engine-component-using-knowledge-based-engineering/ Semi-automated process planning and cost estimation of turned components based on CATIA V5 Machining http://mechanical-engineering.in/forum/topic/1243-semi-automated-process-planning-and-cost-estimation-of-turned-components-based-on-catia-v5-machining/
To be more competitive in the market, many companies are trying to speed up the quotation process and quote more attractive prices. Therefore, they have identified a need for support in the quotation process in order to reduce the quotation lead-time and ensure a higher level of accuracy in the cost estimations. The Quotation Calculator, an application program, has been developed as part of the degree thesis…

Contents

1 Introduction
1.1 Background
1.2 Purpose and aims
1.3 Delimitations
1.4 Description of the thesis
2 Literature review
2.1 Cost estimation
2.2 Process planning
2.3 Design Automation: CAD, CAM, CAD/CAM
2.4 Visual Basic Programming
3 Tool for cost calculation: Quotation Calculator
3.1 Introduction to the Quotation Calculator
3.2 Data analysis of the Quotation Calculator
3.3 Material Cost Calculation
3.4 Machining Time and Machining Cost Calculation
4 Tool for machining time estimation: CATIA V5 machining
4.1 Introduction to CATIA V5 machining
4.2 Data analysis of CATIA V5 Machining (Lathe machining)
5 Comparison of the systems and proposed solutions
5.1 Comparison of the Quotation Calculator and CATIA V5 machining
5.2 Proposed solutions
5.3 Conclusion of the proposed solutions
6 Results
6.1 Data importation to CATIA V5
6.2 Data extraction from CATIA V5
6.3 Data implementation in the Quotation Calculator
7 Conclusions and recommendations
7.1 Conclusion
7.2 Recommendations
Acknowledgement
References
Appendices
A Work Breakdown Structure
B Machine Time Calculation
C VB Scripts

Author: Cheung, Ching Chi

Source: Jönköping University

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Download URL 2]]> Thu, 10 Sep 2009 03:32:19 +0000 http://mechanical-engineering.in/forum/topic/1243-semi-automated-process-planning-and-cost-estimation-of-turned-components-based-on-catia-v5-machining/ TRANSFERRING OF MOVEMENT FOR STEERING EQUIPMENT http://mechanical-engineering.in/forum/topic/1242-transferring-of-movement-for-steering-equipment/
Contents

1. INTRODUCTION
1.1 The project
1.2 Presentation of the group members
1.3 Presentation of universities
1.3.1 Blekinge Institute of Technology
1.3.2 E.I.G.S.I: An French Engineering school
1.3.3 The University of the Basque Country
1.4 Presentation of the company
1.4.1 SVEDALA and the environment
2. DEFINITION OF THE PROJECT
2.1 Product
2.2 Process
2.3 Environment and surroundings
2.4 Human
2.5 Economy
3. RESEARCH OF THE PRODUCT
4. CRITERION DISPOSITION
4.1 Function
4.2 Operation criterion
4.3 Personal safety
4.4 Ergonomics
4.5 Technical service
4.6 Environment
4.6.1 Manufacturing
4.6.2 Operation
4.6.3 Elimination
4.7 Economy
4.7.1 Manufacturing
4.7.2Usage
4.7.3 Elimination
5. DESCRIPTION OF THE SOLUTIONS
5.1 Electronic solution
5.2 Hydraulic solution
5.3 Gears and Shafts
5.4 Synchronous belts
5.5 Single Wire
5.6 Double Wires
6. PRIMARY EVALUATION OF PRODUCT SOLUTIONS
PART 2: THE PRIMARY CONSTRUCTION
7. INTRODUCTION
8. TABLE OF THE DIFFERENT COMPONENTS/DETAILS AND TYPE OF PRODUCT 62
9. PRODUCT STRUCTURES
10. CHOICE OF COMPONENTS
10.1 Poor drawing information
10.2 Demands of the components
10.3 The synchronous belt
10.4 Calculation of the moment and forces
10.5 Selection of the best belt for our needs
10.5.1 Criterions for the belts
10.6 Oil resistance test
10.7 The Gates Poly Chain GT2 synchronous belt
10.7.1 Strength of our belt alternative
10.7.2 Belt performance comparison
10.7.3 Parallel and angular misalignment demands
10.7.4 The Sonic tension meter
10.7.5 Polyurethane and the environment
10.7.6 Belt advantages
10.7.7 The pulleys
10.8 The tensioner
10.9 The double crosspin cardan joint
11. CHOICE OF DETAILS
11.1 Demands of the details
11.2 The shafts
11.2.1 Strength calculation of the middle shaft
11.2.2 Maximum moment for the existing middle shaft
11.2.3 The required diameter of the middle shaft
11.2.4 The steering column holder
11.3 The steel plate structure parts
11.3.1 The middle shaft bearing holder plates

Author: Maxime Outhier, Vilhelm Rydström, Imanol Sanz

Source: Blekinge Institute of Technology

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Download URL 2]]> Thu, 10 Sep 2009 03:25:03 +0000 http://mechanical-engineering.in/forum/topic/1242-transferring-of-movement-for-steering-equipment/ Analysis of Loader Arm of Pneumatic High speed Loader http://mechanical-engineering.in/forum/topic/1241-analysis-of-loader-arm-of-pneumatic-high-speed-loader/
Contents

1 Notation
2 Introduction
2.1 Objectives
3 Analysis Approach
3.1 Description of loader arm
3.2 Description of work piece
4 Finite Element Analysis
4.1 Steps of Finite Element Analysis
5 Finite Element Modeling
5.1 Stiffness Matrix
5.2 Computation of nodal load vector
5.3 Computation of Final Stresses
6 Modeling in ANSYS
6.1 Stages of modeling in ANSYS
6.1.1 Pre-processing
6.1.2 Solution stage
6.1.3 Post-processing
6.2 Results for Original Design
6.3 Criteria for Accuracy
7 Optimization
7.1 Steps Incorporated before Optimization
7.1 First Stage of Optimization
7.2 Second
Stage of Optimization
7.3 Comparison of Results
8 Discussion and Further Work
8.1 Future Work
9 Conclusions
10 References

Author: Suresh Arunachalam, Mohammed Naser Farooqui

Source: Blekinge Institute of Technology

Download This Report]]> Thu, 10 Sep 2009 03:17:39 +0000 http://mechanical-engineering.in/forum/topic/1241-analysis-of-loader-arm-of-pneumatic-high-speed-loader/ Goal Oriented Estimation of Errors due to Modal Reduction in Dynamics http://mechanical-engineering.in/forum/topic/1240-goal-oriented-estimation-of-errors-due-to-modal-reduction-in-dynamics/
Contents

1 Notation
2 Introduction
3 Theory
3.1 Mode superposition method
3.2 The discrete system
3.3 Forced harmonic response
3.4 Undamped modal analysis
4 Modal Synthesis for Forced Harmonic Response
4.1 Complete basis-Diagonalization
4.2 Reduced basis-Diagonalization
5 Error Analysis
5.1 The residual and the error
5.2 Output functions
5.3 The error representation using a dual solution
5.4 Error contributions
6 Simulation and results
6.1 Numerical Example: Cantilever beam under harmonic load
6.2 Finite element model
6.3 Mode shapes
6.4 Displacement in X direction
6.4.1 Dual problem solution
6.4.2 Exact Error
6.4.3 Error estimation
6.4.4 Comparison-Estimated error v/s Exact error
6.4.5 Error Contribution
6.5 Displacement in Y direction
6.5.1 Dual problem solution
6.5.2 Exact Error
6.5.3 Error estimation
6.5.4 Error contribution
6.6 In plane stress σxx
6.6.1 Dual problem solution
6.6.2 Exact Error
6.6.3 Error estimation
6.6.4 Error contribution
7 Discussions and conclusions
8 Future work
9 References

Author: Sandeep Shetty, Chukwudi Anthony Okeke

Source: Blekinge Institute of Technology

Download Link]]> Thu, 10 Sep 2009 03:13:43 +0000 http://mechanical-engineering.in/forum/topic/1240-goal-oriented-estimation-of-errors-due-to-modal-reduction-in-dynamics/ Turning device http://mechanical-engineering.in/forum/topic/1239-turning-device/
Contents

1. INTRODUCTION
1.1. Background
1.2. Purpose
1.3. Method
1.4. Restrictions
2. THEORETICAL AND CALCULATION
2.1. Chain drive transmissions
2.2. Resistant characteristics of the material
2.2.1. Calculation of the transport balls resistance
2.2.2. Surface Resistance
2.2.2.1 Admissible contract stress of the material
2.2.2.2 Life coefficient
2.2.3 Resistant to the flexion brake
2.2.3.1 Nominal limit of resistance.
2.2.3.2 Life coefficient by flexion.
2.3. Introduction to fatigue Calculation
2.3.1. Definitions and concepts
2.3.2. Tendencies in S-N curves and estimations
2.3.3. Fatigue Calculation
2.4. Introduction to bearings Calculation
2.4.1. Kind of bearings
2.4.2. Failure causes
2.4.3. Load in rolling elements
2.4.4. Calculation of the bearings life
2.5. Deflexion in Axes
3. DESIGN
3.1. Former design
3.2. Design specifications
3.2.1. Performance
3.2.2. Working environment
3.2.3. Maintenance
3.2.4. Size
3.2.5. Weight
3.2.6. Reliability
3.2.7. Safety
3.2.8. Installation
3.2.9. Materials
3.3. Process diagram for the area of the machine in the assembly line 27
3.4. Mechanical design
3.5. Development of idea
4. RESULTS
5. CONCLUSIONS
6. SUGGESTIONS FOR FUTURE WORK
LITERATURE LIST
APPENDIX

Author: Villanueva Ballester, Rubén,Panella Martínez, Humberto

Source: Kristianstad University

Download Link]]> Thu, 10 Sep 2009 03:08:51 +0000 http://mechanical-engineering.in/forum/topic/1239-turning-device/ Productivity Measurement, http://mechanical-engineering.in/forum/topic/1237-productivity-measurement/ Sun, 06 Sep 2009 07:15:08 +0000 http://mechanical-engineering.in/forum/topic/1237-productivity-measurement/ CNG Retail network http://mechanical-engineering.in/forum/topic/1217-cng-retail-network/
The supply chain logistics, demand assessment, site locations to be proposed...

Technical economical, financial feasibility to be tested.

Is there any one who has worked in CNG logistics, like in IGL for delhi....


If any 1 has some material which can be helpful for my research design...   and synopsis.

The steps to go in research..


Thanks & Regards
Saurabh Jain]]> Fri, 28 Aug 2009 17:43:06 +0000 http://mechanical-engineering.in/forum/topic/1217-cng-retail-network/ can anyone suggest me mini projects in mechanical engineering http://mechanical-engineering.in/forum/topic/1211-can-anyone-suggest-me-mini-projects-in-mechanical-engineering/ Mon, 24 Aug 2009 05:22:05 +0000 http://mechanical-engineering.in/forum/topic/1211-can-anyone-suggest-me-mini-projects-in-mechanical-engineering/ Final Year Project - Ideas http://mechanical-engineering.in/forum/topic/549-final-year-project-ideas/
I am looking for some ideas for my final year project, there seems so much to do and i just cant think what i want to do.

Looking to base it around Aviation or Theromodynamics/Fluids, so maybe an engine?

Thanks]]> Fri, 23 Jan 2009 12:32:21 +0000 http://mechanical-engineering.in/forum/topic/549-final-year-project-ideas/ milling of free surfaces http://mechanical-engineering.in/forum/topic/521-milling-of-free-surfaces/ by using means of ne sftware or nethng else plzzz..  



thanks in advance.. :)]]> Wed, 31 Dec 2008 19:24:20 +0000 http://mechanical-engineering.in/forum/topic/521-milling-of-free-surfaces/ gas turbine jet engines http://mechanical-engineering.in/forum/topic/512-gas-turbine-jet-engines/
and Thanks to saiello2003

Attached Files

]]> Sat, 27 Dec 2008 09:59:52 +0000 http://mechanical-engineering.in/forum/topic/512-gas-turbine-jet-engines/ A seminar on DIAMOND CUTTING TOOL AND COATINGS http://mechanical-engineering.in/forum/topic/490-a-seminar-on-diamond-cutting-tool-and-coatings/
Diamond crystallizes in different forms.  Eight and twelve sided crystal forms are most commonly found. Cubical, rounded, and paired crystals are also common.  Crystalline diamonds always separate cleanly along planes parallel to the faces.  The specific gravity for pure diamond crystals is almost always 3.52.  Other properties of the diamond are frequently useful in differentiating between true diamonds and imitations: Because diamonds are excellent conductors of heat, they are cold to the touch;  Most diamonds are not good electrical conductors and become charged with positive electricity when rubbed; Diamond is resistant to attack by acids or bases;  Transparent diamond crystals heated in oxygen burn at about 1470° F, forming carbon dioxide


g_rakesh2

     :D]]> Thu, 11 Dec 2008 11:29:02 +0000 http://mechanical-engineering.in/forum/topic/490-a-seminar-on-diamond-cutting-tool-and-coatings/ A seminar on DIAMOND CUTTING TOOL AND COATINGS http://mechanical-engineering.in/forum/topic/489-a-seminar-on-diamond-cutting-tool-and-coatings/
Diamond crystallizes in different forms.  Eight and twelve sided crystal forms are most commonly found. Cubical, rounded, and paired crystals are also common.  Crystalline diamonds always separate cleanly along planes parallel to the faces.  The specific gravity for pure diamond crystals is almost always 3.52.  Other properties of the diamond are frequently useful in differentiating between true diamonds and imitations: Because diamonds are excellent conductors of heat, they are cold to the touch;  Most diamonds are not good electrical conductors and become charged with positive electricity when rubbed; Diamond is resistant to attack by acids or bases;  Transparent diamond crystals heated in oxygen burn at about 1470° F, forming carbon dioxide


g_rakesh2

     :D]]> Thu, 11 Dec 2008 11:29:00 +0000 http://mechanical-engineering.in/forum/topic/489-a-seminar-on-diamond-cutting-tool-and-coatings/ A Seminar on Magnetic Bearing http://mechanical-engineering.in/forum/topic/488-a-seminar-on-magnetic-bearing/ Introduction


A magnetic bearing is a bearing which supports a load using magnetic levitation. Magnetic bearings support moving machinery without physical contact, for example, they can levitate a rotating shaft and permit relative motion without friction or wear. They are in service in such industrial applications as electric power generation, petroleum refining, machine tool operation and natural gas pipelines. They are also used in the Zippe-type centrifuge used for uranium enrichment. Magnetic bearings support the highest speeds of any kind of bearing; they have no known maximum relative speed.


History


The evolution of active magnetic bearings may be traced through the patents issued in this field. The table below lists several early patents for active magnetic bearings. Earlier patents for magnetic suspensions can be found but are excluded here because they consist of assemblies of permanent magnets of problematic stability per Earnshaw's Theorem.

Early active magnetic bearing patents were assigned to Jesse Beams at the University of Virginia during World War II and are concerned with ultracentrifuges for purification of the isotopes of various elements for the manufacture of the first nuclear bombs, but the technology did not mature until the advances of solid-state electronics and modern computer-based control technology with the work of Habermann and Schweitzer. Extensive modern work in magnetic bearings has continued at the University of Virginia in the Rotating Machinery and Controls Industrial Research Program. The first international symposium for active magnetic bearing technology was held in 1988 with the founding of the International Society of Magnetic Bearings by Prof. Schweitzer, Prof. Allaire (University of Virginia), and Prof. Okada (Ibaraki University). Since then there have been nine succeeding symposia. Kasarda reviews the history of AMB in depth. She notes that the first commercial application of AMB’s was with turbomachinery. The AMB allowed the elimination of oil reservoirs on compressors for the NOVA Gas Transmission Ltd. (NGTL) gas pipelines in Alberta, Canada. This reduced the fire hazard allowing a substantial reduction in insurance costs. The success of these magnetic bearing installations led NGTL to pioneer the research and development of a digital magnetic bearing control system as a replacement for the analog control systems supplied by the American company Magnetic Bearings Inc. (MBI). In 1992, NGTL's magnetic bearing research group formed the company Revolve Technologies Inc. to commercialize the digital magnetic bearing technology. This firm was later purchased by SKF of Sweden. The French company S2M, founded in 1976, was the first to commercially market AMB’s. Extensive research on magnetic bearings continues at the University of Virginia in the Rotating Machinery and Controls Industrial Research Program.


Description


It is difficult to build a magnetic bearing using permanent magnets due to the limitations imposed by Earnshaw's theorem, and techniques using diamagnetic materials are relatively undeveloped. As a result, most magnetic bearings require continuous power input and an active control system to hold the load stable. Because of this complexity, the magnetic bearings also typically require some kind of back-up bearing in case of power or control system failure.

Two sorts of instabilities are very typically present with magnetic bearings. Firstly attractive magnets give an unstable static force, decreasing with greater distance, and increasing at close distances. Secondly since magnetism is a conservative force, in and of itself it gives little if any damping, and oscillations will cause loss of successful suspension if any driving forces are present, which they very typically are.

With the use of an induction-based levitation system present in cutting-edge MAGLEV technologies such as the Inductrack system, magnetic bearings could do away with complex control systems by using Halbach arrays and simple closed loop coils.

Basic Operation

Basic Operation for a Single AxisAn active magnetic bearing (AMB) consists of an electromagnet assembly, a set of power amplifiers which supply current to the electromagnets, a controller, and gap sensors with associated electronics to provide the feedback required to control the position of the rotor within the gap. These elements are shown in the diagram. The power amplifiers supply equal bias current to two pairs of electromagnets on opposite sides of a rotor. This constant tug-of-war is mediated by the controller which offsets the bias current by equal but opposite perturbations of current as the rotor deviates by a small amount from its center position.

The gap sensors are usually inductive in nature and sense in a differential mode. The power amplifiers in a modern commercial application are solid state devices which operate in a pulse width modulation (PWM) configuration. The controller is usually a microprocessor or DSP.

brg.JPG

Applications


Magnetic bearing advantages include very low and predictable friction, ability to run without lubrication and in a vacuum. Magnetic bearings are increasingly used in industrial machines such as compressors, turbines, pumps, motors and generators. Magnetic bearings are commonly used in watt-hour meters by electric utilities to measure home power consumption. Magnetic bearings are also used in high-precision instruments and to support equipment in a vacuum, for example in flywheel energy storage systems. A flywheel in a vacuum has very low windage losses, but conventional bearings usually fail quickly in a vacuum due to poor lubrication. Magnetic bearings are also used to support maglev trains in order to get low noise and smooth ride by eliminating physical contact surfaces. Disadvantages include high cost, and relatively large size.

A very interesting new application of magnetic bearings is their use in artificial hearts. The use of magnetic suspension in ventricular assist devices was pioneered by Prof. Paul Allaire and Prof. Houston Wood at the University of Virginia culminating in the first magnetically suspended ventricular assist centrifugal pump (VAD) in 1999]]> Thu, 11 Dec 2008 11:11:58 +0000 http://mechanical-engineering.in/forum/topic/488-a-seminar-on-magnetic-bearing/ M Tech dissertation http://mechanical-engineering.in/forum/topic/166-m-tech-dissertation/ hi, I want to do my M Tech dissertation on ISO standards(EMS, QMS, OHSAS), pl guide Wed, 30 Jul 2008 02:31:44 +0000 http://mechanical-engineering.in/forum/topic/166-m-tech-dissertation/ Pipe Ranger - a pipe maintenance device http://mechanical-engineering.in/forum/topic/81-pipe-ranger-a-pipe-maintenance-device/                         me and my team has invented a device (model) for the maintenance of pipeline(internally) used in gas or oil,it is able to perform operations of cutting, brushing and spray arrangement to fill up the leakages.
if any one intrested in it can talk to me.
                      I am also ready to give the demo of project to any company for further development of the project.

          Suggestions are most welcome...........anyone can give their suggestions for the project]]> Fri, 09 May 2008 04:21:23 +0000 http://mechanical-engineering.in/forum/topic/81-pipe-ranger-a-pipe-maintenance-device/ wind turbine http://mechanical-engineering.in/forum/topic/65-wind-turbine/ hi i m bilal i m the student of mechanical engineereing i need help in wind turbine designing if any one can help me i will be thenkful ]]> Wed, 02 Jan 2008 11:01:47 +0000 http://mechanical-engineering.in/forum/topic/65-wind-turbine/ Heat affected zone in MMAW.... http://mechanical-engineering.in/forum/topic/31-heat-affected-zone-in-mmaw/
- varuos]]> Sun, 28 Oct 2007 01:43:58 +0000 http://mechanical-engineering.in/forum/topic/31-heat-affected-zone-in-mmaw/ project http://mechanical-engineering.in/forum/topic/30-project/ m namit pursuing my mechanical engg . frm jaipur. it's my final yr...so require a project. i couldn't decide the topic plz help me..some topic i m telling u..plz notice abt it.
1. six stroke engine
2. protect on wastage of lubricant.

ny other u may suggest me plz help me
thnx

- namitd1985]]> Sun, 28 Oct 2007 01:43:09 +0000 http://mechanical-engineering.in/forum/topic/30-project/ plssss help me : power of my induced draft fans. http://mechanical-engineering.in/forum/topic/29-plssss-help-me-power-of-my-induced-draft-fans/
i need answers as soon as possible. pls help me how to compute for the power of my induced draft fans.

- aces2110]]> Sun, 28 Oct 2007 01:40:49 +0000 http://mechanical-engineering.in/forum/topic/29-plssss-help-me-power-of-my-induced-draft-fans/