Mechanical Engineering Community

• ## Mechanical Engineering Knowledge

Welcome to Mechanical Engineering Community forum - The knowledge community connecting mechanical engineering professionals across the globe. The success of this community depends on your participation. Do not read just as a guest... Be an active member

• ### Fit_and_Dimensional_Tolerances

Fit_and_Dimensional_Tolerances_Mechanical_Engineering_Drawing Source Ashish K Darpe Department of Mechanical Engineering IIT Delhi Thanks to Mr. Ashish K Darpe Regards Saurabh Jain

saurabhjain
Powerpoint Presentations 7

### introduction to cfd Computational fluid dynamics

its useful ppt about CFD •Computational fluid dynamics (CFD) is the science of predicting fluid flow, heat transfer, mass transfer, chemical reactions, and related phenomena by solving the mathematical equations which govern these processes using a numerical process.

Powerpoint Presentations 5

### Machine Design II ppt

Presentation on Design of- Clutch Brake Belts Chain Gears

saurabhjain
Powerpoint Presentations 5

### Geometric Dimensioning and Tolerancing

Geometric Dimensioning and Tolerance ppt Five powerpoint presentations

saurabhjain
Powerpoint Presentations 7

### Metal Forming

Powerpoint Notes on Metal forming Topic includes— Hot &Cold working Forging Extrusion Rolling Drawing

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Powerpoint Presentations 5

### HVAC Basics

Basic concepts of air conditioning system

saurabhjain
Powerpoint Presentations
• ### Explain in an orderly manner how the force in the member of a truss be detected using the method of joint.

Explain in an orderly manner how the force in the member of a truss be detected using the method of joint. 1. You can answer this question 2. You can like the best answer 3. You can share the question.

saurabhjain
Mechanical Engineering Questions

### How is power transmitted from lathe spindle to 1) Feed shaft 2). Lead Screw

How is power transmitted from lathe spindle to 1) Feed shaft 2). Lead Screw. You can answer this question You can like the best answer You can share this questions to get more answers

Mechanical Engineering Questions

### Which type of lubrication system is this?

Which type of lubrication system is this? please explain 1. You can answer this question 2. You can like the best answer 3. You can share the question...

saurabhjain
Mechanical Engineering Questions 7
• ### 18 Mechanical Properties Which Every Mechanical Engineer Should Know

Selection of material is an important aspect for manufacturing industries . The quality of product is highly depends upon its material properties. These properties are used to distinguish materials from each other. For Example: A harder material is used to make tools.A ductile material is used to draw wires. So the knowledge of mechanical properties of material is desirable for any mechanical student or for any person belongs to mechanical industries. This post brings top 18 mechanical propertie

saurabhjain
Material Science

### Types of Welding

Welding is a process of joining similar and dissimilar metals or other material by application of heat with or without application of pressure and addition of filler material. It is used as permanent fasteners. Welding is essential process of every manufacturing industries.  In fact, the future of any new metal may depend on how far it would lend itself to fabrication by welding. The weldability has been defined as the capacity of being welded into inseparable joints having specified pro

saurabhjain
Manufacturing Technology 1

### Difference between Hot Working and Cold Working

They both are the metal forming processes. When plastic deformation of metal is carried out at temperature above the recrystallization temperature the process, the process is known as hot working. If this deformation is done below the recrystallization temperature the process is known as cold working. There are many other differences between these processes which are described as below. Difference between Hot Working and Cold Working: S.No.

saurabhjain
Manufacturing Technology 4

### CLASSIFICATION OF FLUIDS

Ideal fluid: A fluid, which is incompressible and having no viscosity, is known as an ideal fluid. Ideal fluid is only an imaginary fluid as all the fluids, which exist, have some viscosity. Real fluid: A fluid, which possesses viscosity, is known as real fluid. All the fluids, in actual practice, are real fluids. Example : Water, Air etc. Newtonian fluid: A real fluid, in which shear stress in directly proportional to the rate of shear strain or velocity gradient,

saurabhjain
Fluid Mechanics 1
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4. ## Andrea Koraqe

BOOLEAN ALGEBRA... NEED HELP PLEAASE

I NEED HELP WITH A PROJECT AT UNIVERSITY , I WOULD REALLY APPRECIATE IF ANYBODY COULD HELP ME , IT IS ABOUT SIMPLIFYING MAXTERMS AND MINTERMS.
I SIMPLIFIED THE MINTERMS AND THE FINAL EXPRESSION IS (A'B'D'+A'BC+AC')
I HAVE BEEN TRYING TO SIMPLIFY THE MAXTERMS BUT I CANNOT GET THE SAME FINAL EXPRESSION AS WITH THE MINTERMS BECAUSE THEY ARE SUPPOSED TO BE THE SAME.
MY MAXTERMS ARE{(A+B+C+D')(A+B+C'+D')(A+B'+C+D)(A+B'+C+D')(A'+B+C'+D)(A'+B+C'+D')(A'+B'+C'+D)(A'+B'+C'+D').
I NEED THE ALGEBRIC WAY SOLUTION STEP BY STEP

5. ## DIRCET MEASUREMENT AND INDIRECT MEASUREMENT HOW MANY TYPES OF MEASURING MATHODS

माप लेने की विधियां ( Measuring Methods )दो प्रकार के हैं प्रत्यक्ष माप द्वारा (By Dircet Measurement इस विधि द्वारा किसी जॉब को मापते समय किसी दूसरे टूल की आवश्यकता न पड़े उन्हें प्रत्यक्ष माप कहते हैं जैसे स्टील रूल माइक्रोमीटर वर्नियर कैलीपर बेवल प्रोट्रेक्टर इत्यादि। अप्रत्यक्ष माप द्वारा ( By Indirect Measurement ) इस विधि द्वारा किसी जॉब को मापते समय दूसरे टूल की आवश्यकता पड़े उन्हें अप्रत्यक्ष माप कहते हैं जैसे इंन साइड कैलीपर या आउटसाइड कैलीपर का प्रयोग करके स्टील रूल या माइक्रोमीटर से माफ की रीडिंग ली जा सकती है। फुट रूल ( Foot Rule ) एक गज लंबाई को तीन भागों में बांटा जाए तो प्रत्येक भाग में एक फुट नाप दिया जाता है। प्रत्येक फुट लंबाई को 12 भागों में बांटा गया है इन 12 भागों में से प्रत्येक को 1 इंच कहते हैं यानी एक फुट में 12 इंच होते हैं। एक भाग को 1/8 तथा चौथे भाग को 1/4 कहते हैं। फुट रूल के द्वारा छोटे से छोटा माप 1/64 ले सकते हैं। फुट रूल के कुछ इंचो को 16 कुछ को 32 तक और कुछ को 64 में बांटा गया है। ताकि कोई छोटे से छोटा नाप को सही लिया जा सके 16 भाग वाली प्रत्येक रेखा 1/16 के बराबर 32 भाग वाली 1/32 तथा 64 भाग वाली 1/64 के बराबर लंबाई मोटाई होती है। फुट रूल के एक साइड पर ब्रिटिश प्रणाली दी होती है। तथा दूसरी तरफ मीट्रिक प्रणाली भी होती है। मीट्रिक प्रणाली आजकल सारे संसार में फैली हुई है। इस सिस्टम में मिली मीटर, सेंटीमीटर, मीटर इत्यादि होते हैं। कुछ फुट रूल पर सिर्फ मिली मीटर तथा सेंटीमीटर दिए होते हैं। फुट रूल कई प्रकार के होते हैं। जैसे 6 लंबा इंजीनियरिंग स्टील फुट रूल 12",36" इंजीनियरिंग फुट रूल फ़ोल्डिंग तथा तीन फुट से अधिक नापने के लिए टेप आते हैं। इंजीनियरिंग काम करने के लिए स्टील टेप के तथा वस्त्र नापने के लिए गज या मीटर , टेलरिंग नाप के लिए कॉटन टेप आते हैं फूट रूल के एक साइड पर इंच तथा सामने की ओर एम.एम और सेंटीमीटर के निशान होते हैं। यह प्राय: स्टैंडर्ड स्टील, एलुमिनियम, ब्रास तथा लकड़ी के बने होते हैं। सावधानियां ( Safety Precaution ) Read more
6. ## Open innovation platform for engineers

We are working on https://engineeringtalks.com

9. Last week
10. ## FerraMatrix Offer Top Quality Detailing Services

Our Structural Detailing Services encompass drawings and 3D models of almost all types of structures. Our ability to extend reliable, accurate and economical services for clients has helped us establish a strong reputation in the field. Our consistent use of technologies such as Tekla Structures (Xsteel) allows us to develop 3D Models with unmatched accuracy, impeccable quality and intricate details, compared to conventional detailing methods used in the market. Additionally we attend to the needs of several industrial, commercial and residential steel structural detailing requirements, tailoring our deliverables to the tee to each project needs. Our constant communication with clients and embracing of good “old school” processes for better representation, we continue to offer unparalleled detailing services for several projects. What We Provide Erection Drawings Ferramatrix is an ideal company offering comprehensive erection drawings. We host a highly skilled detailer team that delivers erection drawings with impeccable quality, stringent precision and aligned latest standards. The drawings clearly reveal the location and position of various assemblies of a specific structure and quite useful to personnel in the field. Assembly Drawings Assembly drawings created by Ferramatrix presents comprehensive details of individual parts arrangement in a fixed formwork unit. The drawings consist of items and consumables along with data on required sizes and labels for elevations.
11. ## Software purchasing let me down

I am a new engineer at a factory and our company want to purchase a new simulation software. Our manager ask me to compare the software and discuss with the accounting department. Then they will buy for us. I found that the process communicates with the accounting department waste me a lot of time. Because most of them only care about the price. So, how do your company purchase a software? Will you can purchase for your own then apply for reimbursement or you should ask the accounting department to buy them for you?
12. ## Software purchasing let me down

I am a new engineer at a factory and our company want to purchase a new simulation software. Our manager ask me to compare the software and discuss with the accounting department. Then they will buy for us. I found that the process communicates with the accounting department waste me a lot of time. Because most of them only care about the price. So, how do your company purchase a software? Will you can purchase for your own then apply for reimbursement or you should ask the accounting department to buy them for you?
13. ## Mr

Need information on the design of a boiler for personal used at home, in other to avoid contamination from diseases.
14. ## Crank slider mechanism

Our department of technological equipment, engeneering and standardization of Karaganda State Technical University deals with these resarches http://www.kstu.kz/
15. ## Crank slider mechanism

Can you please make an example or describe, where i can find one? I do not really understand it. Have i to add all the clearances at the joints and i get the backlash?
16. ## Open innovation platform for engineers

What is the best open innovation platform/community for engineers? Maybe even a platform made by some corporation or manufacturer. Please share if you know any. Thank you.
17. ## Top Ball Nose End Mills Cutting Tools Suppliers

Until now If you are not getting any trustworthy carbide cutting tools manufacturers who provides ball nose end mill cutting tools in your specified location, Please go through our online portal here you can find your product with superior quality.
18. ## Crank slider mechanism

Backlash depends upon clearances at the joints. You will have to specify all of these, and then look at the various possible combinations to find the worst case. It is a long, tedious process. DrD
19. ## Correction To Mass On Multiple Spring Supports

Mechanics Corner A Journal of Applied Mechanics and Mathematics by DrD, #48-B Correction To Mass On Multiple Spring Supports Correction The previous post, #48 titled Mass on Multiple Spring Supports had several typographical errors. Strangely, they are all in the brief introductory example regarding the loads on the four legs of a table, at least these are the only ones that have been called to my attention. As many of you know, I am older than dirt, and my typing skill is degrading; this leads to errors at times. I apologize for misleading anyone. Fortunately, one reader notified me that there were errors. MassOnMultipleSpringMountsB.pdf
20. ## WHY COOLING SYSTEM WAS IMPORTANT IN ENGINE AND CAR WHAT IS COOLING SYSTEM HOW ITS WORKING MAIN PARTS OF COOLING SYSTEM HOW MANY TYPES OF COOLING SYSTEM.

Cooling System in Car and Engine परिचय ( Introduction ) पावर स्ट्रोक के अंदर बहुत ज्यादा तापमान हो जाता है। तथा तापमान को दूर करने के लिए कोई ना कोई साधन जरूर अपनाना चाहिए। नहीं तो अधिक गर्मी होने से इंजन के पार्ट्स सीज हो जाएंगे अधिक गर्म होने से इंजन ऑयल की फिल्म टूट जाएगी जिससे इंजन के पार्ट सीज हो जाएंगे वाटर कूलिंग सिस्टम यह सिद्ध हो चुका है। कि इंजन के चलने से फ्यूल की 20% गर्मी फायदेमंद होती है। बाकी की गर्मी बाहर निकालनी पड़ती है कूलिंग सिस्टम 28% गर्मी निकालता है। फ्रिक्शन 5% एनर्जी जली हुई गैसों से 5% और बाकी 2% ट्रांसमिशन को चलाने में खर्च होती है। कूलिंग सिस्टम की किस्में ( Types Of Cooling System. ) गर्मी को दूर करने के लिए दो तरह के कूलिंग सिस्टम प्रयोग में लाए। Read More
21. ## WHAT IS FLYWHEEL AND HOW IT'S WORK AND WHAT IS CRANK CASE

Flywheel And Crank Case. फ्लाई - व्हील (Flywheel) फ्लाई व्हील प्राय: स्टील कास्टिंग का गोल पहिया होता है जो क्रैंक्षफ्ट की पिछले फ्लेएंज पर नट बोल्ट द्वारा कसा रहता है एक फ्लाई - व्हील क्रैंक शाफ्ट पर बंधा हुआ रहता है। इसके ऊपर एक रिंग गर्म करके फसाया जाता है जिसके ऊपर सेल्फ स्टार्टर का पिनियन आकार इसको घुमाता है जिससे इंजन स्टार्ट हो जाता है। इसके फेस पर क्लच असेंएबली लगी रहती है। फ्लाई - व्हील की कार्यप्रणाली ( Working System Of Flywheel ) मानो एक सिंगल सिलेंडर इंजन में एक पावर-स्ट्रोक और तीन अन्य स्ट्रोक होती है जिनके चार्ज के अंदर खींचा जाता है इसे कंप्रेस किया जाता है और फिर एग्जास्ट रूप में उन्हें बाहर धकेल आ जाता है इन तीनों स्टोर को मे इंजन इंजन की कुछ शक्ति लग जाती है । और वह धीमी गति से चलना पसंद करता है । लेकिन साथ में पावर - स्ट्रोक उसे फिर ताकत देती है कि वह चलता रहे पावर - स्ट्रोक के अंदर दी ताकत से फ्लाई - व्हील के अंदर मोमेंट ऑफ इनरिया पैदा हो जाता है। जो तीन आईडल स्ट्रोक में घुमाए रखता है और धीरे नहीं होने देता हैं। फ्लाई - व्हील के मुख्य कार्य ( Main Function Of Flywheel )Read More
22. ## WHAT IS BAYTERY AND HOW ITS WORK PARTS OF BATTERY DEFINITION OF BATTERY

🔋 Battery. 1. Introduction of Battery - ऑटोमोबाइल कार के इलेक्ट्रिकल सिस्टम में battery का महतवपूर्ण स्थान है। यह कार के इंजन चलाने के लिए सैल्फ - स्टार्टर को बिजली देती है। 2.Working of Battery - Read More
23. ## WHAT IS CLUTCH AND ITS WORKING HOW MANY TYPES OF CLUTCH AND QUALITY OF GOOD CLUTCH CLUTCH AND DIFFINATION.

Interoduction( परिचय ) क्लच प्राय: इंजन और गियर बॉक्स के मध्य में फिट किया जाता है जैसे की fig 1. पर दिखया गया है क्लच प्राय: इंजन की ड्राइव गियर बॉक्स से जोडने या तोड़ने का साधन है। इंटरनल कंबस्शन इंजन प्राय : गाड़ी को चलाने के लिए जरूरी तातक पैदा नही कर पाता। इसलिए जरूरी है की इसका संबंद्व Transmistion से तोड़ा जाये और इंजन को पहले बिना लोड के स्पीड पर चलये ताकि वह काफी टॉर्क बना पाये और धिरे -२ उसकी ड्राइव को Transmistion से जोड़े जिसके बिना झटका लगे गाड़ी चले जब हम क्लच को पूरी अंगेज करे तो यह इंजन की सारी ताकत गियरबॉक्स तक पुंचाये और उसके अंदर कोई स्प्लैज नहीं होनी चाहिए। Fig 1. Layout of Power flow in Vehicle. 2. Function Of Clutch ( क्लच के कार्य )Read More
24. ## Mass On Multiple Spring Supports

With 381 views, no one has seen anything worth commenting on. Wow!! So all of you already knew this? Or perhaps you thought this was not a significant problem? DrD
25. Earlier

27. ## Production of different hardware fittings

Production of different hardware fittings
28. ## What is torque converter and how it's working where was torque converter is use Etc.

Torque Converter टार्क कनवर्टर ( Torque converter ) टार्क कनवर्टर फ्लयूड फ्लाई व्हील की आकृति जैसा होता है। अंतर केवल यह है कि फ्लयूड फ्लाई व्हील तो सिर्फ एक को बढ़ा भी सकता है Torque को बढ़ाने के लिए इसके अंदर एक घूमने वाला और मेंबर फिट किया रहता है आप सोच रहे होंगे कि यहां तक बढ़ा सकता है तो गाड़ी में गियर बॉक्स लगाने की क्या आवश्यकता है गाड़ी को पहाड़ी पर चलते समय या बहुत तेज भागने के लिए के लिए फंसी हुई गाड़ी को निकालने के लिए या गाड़ी को पीछे करते समय और गाड़ी को न्यूट्रल में रखने के लिए आवश्यक है कि इसमें गियर बॉक्स लगाया जाए ऐसी गाड़ियों में मोटर फिट होता है उनमें एंट्री टाइप गियर बॉक्स किया रहता है Torque converter Torque कन्वर्टर की विशेषता ( Qualities Of Torque Converter ) Read more in every language.

Hello, I'm a student in Mechanical Engineering currently in my 3rd year and finishing next year hopefully with an MEng degree. I'm trying to look what can i do after my degree and Im currently thinking of doing an MSc and later on if I still have the courage a PHd. The problem that i have is that Im particularly fascinated by two fields which both rely on programming. The two fields are Mechatronics and Machine Learning. What is the future in those fields? What is the criterion upon which I should base my decision? Thanks in advance.
30. ## Holding a cylinder in place- strap wrench?

Hello everyone, I'm new to the forum, trying to solve an engineering problem. I have ideas, but wanted to brainstorm here and see if anyone else may have a better one. I have a steel cylinder (roughly 3.6 inches diameter, 6 inches long) with a hole through its center. A shaft is pressed into that hole with an interference fit. I want to put a torque wrench on the shaft to test how much torque it can withstand without slipping. To do this I think I will need to hold the cylinder still, and I am brainstorming ways to do this. I need to test it up to 50 ft*lbs, and would like to have the ability to go up to 165 ft*lbs. I am considering a strap wrench, as they're available in rubber (high friction) and they self-tighten as more torque is applied. However, I'm not sure if a strap wrench would be able to handle that without slipping. I do not want to cut into or damage the cylinder. It's quite strong and can resist a lot of crush force, but teeth biting into it are likely to cause damage. Any input is appreciated!
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• BOOLEAN ALGEBRA... NEED HELP PLEAASE
I NEED HELP WITH A PROJECT AT UNIVERSITY , I WOULD REALLY APPRECIATE IF ANYBODY COULD HELP ME , IT IS ABOUT SIMPLIFYING MAXTERMS AND MINTERMS.
I SIMPLIFIED THE MINTERMS AND THE FINAL EXPRESSION IS (A'B'D'+A'BC+AC')
I HAVE BEEN TRYING TO SIMPLIFY THE MAXTERMS BUT I CANNOT GET THE SAME FINAL EXPRESSION AS WITH THE MINTERMS BECAUSE THEY ARE SUPPOSED TO BE THE SAME.
MY MAXTERMS ARE{(A+B+C+D')(A+B+C'+D')(A+B'+C+D)(A+B'+C+D')(A'+B+C'+D)(A'+B+C'+D')(A'+B'+C'+D)(A'+B'+C'+D').
I NEED THE ALGEBRIC WAY SOLUTION STEP BY STEP
I am NX user and optimize toplogy 3D geometry with NASTRAN & ABAQUS algoritem.
See more details on my FB profile: https://www.facebook.com/groups/442690599857312/
All Best,
Em: studio.dynavox@siol.net

• hi everyone
i am looking for a program to draw a steam turbine with 6 bleeding lines schematic diagram
also if any one can help me with i will be very thankful.
• I understand the feelings of unemployed frustrated mechanical engineers.  Through my posts on many social medias, I have tried to motivate them.  This is for the first time I am using this media with the same thinking.  I hope, you will like my first post,  "What do you wish to be after Engineering Graduation?"  This is my small effort to guide them.  Your comments are welcomed.  You also can communicate to me through my email id:  thebrains3946@gmail.com in case of further help.
• あなたがラブドールを持っている理由は二つしかありません：あなたは赤い髪を持っているか、あなたはユニークになりたいです。あなたの両親はリアルドールのアクセサリーにガーターを加えることについていつも混乱しています、しかし、彼女がそれを取り除いた数日後に彼女の巻き毛が平らにされるので、あなたはただ不満です（それは貧しい帽子です！）。あなたはその曲が人気になる前にその曲を聴いた人です。はい。
なぜ人形のためのアクセサリーの1つがひょうたんであるか（あなたはどうやって遊ぶべきですか？）に関して常に質問があります、しかし、あなたは彼女が突き刺された耳をつけたことに非常に興奮しています。ラブドールの背景物語はいくつかの深刻で多様なテーマに触れます - 他の女のロリラブドールブックでは見られません。
彼女が2002年にリリースされたために多くの人がダッチワイフを育てさせたわけではありませんが、彼女の髪はあなたが好きな色なので、あなたは彼女と目立つことがうれしいですたとえあなたの両親が彼女の服は本当に鹿やヤマアラシで作られていないとあなたに伝えようとしても、あなたはあなたの友人に言い続けるでしょう。
（「ねえ、あなたは綿で作られた人形の服が大好きですか？笑、農民。」）あなたはいつもひそかにあなたの名前があなたの姉妹のように「雨を言う〜」であることを望みます。あなたは若い頃から馬に夢中になっている人の100％ですあなたはジュースのクリーニングがあるたびに試みました。
彼女はイヤリングと彼女の髪に花を身に着けているので愛のセックス人形はクールです。彼女についてのすべてはとてもゆったりとしていてカジュアルです、彼女はファンとあなたさえ持っています（アメリカ人の女の子はアクセサリーが上手で上手です）。彼女のペットは山羊です。男として、あなたが部屋に入るとき、あなたは切望された〜*〜冷たい雰囲気〜*〜をあきらめますあなたは構成しないで、あなたはいくつかのオーストラリア人サーファーと結婚することになるかもしれません。
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• Our Structural Detailing Services encompass drawings and 3D models of almost all types of structures. Our ability to extend reliable, accurate and economical services for clients has helped us establish a strong reputation in the field. Our consistent use of technologies such as Tekla Structures (Xsteel) allows us to develop 3D Models with unmatched accuracy, impeccable quality and intricate details, compared to conventional detailing methods used in the market. Additionally we attend to the needs of several industrial, commercial and residential steel structural detailing requirements, tailoring our deliverables to the tee to each project needs. Our constant communication with clients and embracing of good “old school” processes for better representation, we continue to offer unparalleled detailing services for several projects. What We Provide Erection Drawings         Ferramatrix is an ideal company offering comprehensive erection drawings. We host a highly skilled detailer team that delivers erection drawings with impeccable quality, stringent precision and aligned latest standards. The drawings clearly reveal the location and position of various assemblies of a specific structure and quite useful to personnel in the field.   Assembly Drawings Assembly drawings created by Ferramatrix presents comprehensive details of individual parts arrangement in a fixed formwork unit. The drawings consist of items and consumables along with data on required sizes and labels for elevations.
• I am a new engineer at a factory and our company want to purchase a new simulation software. Our manager ask me to compare the software and discuss with the accounting department. Then they will buy for us. I found that the process communicates with the accounting department waste me a lot of time. Because most of them only care about the price. So, how do your company purchase a software? Will you can purchase for your own then apply for reimbursement or you should ask the accounting department to buy them for you?

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