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  2. Kĥắjå Þårvěêž

    CAD software for design?

  3. Sreenath P Nampiathiry

    Please share your Engineering profile

    Name: Sreenath P Engineering college : Government Engineering College, Barton Hill, Thiruvananthapuram (B.Tech), Jain University, Bangalore (M.Tech) Location (City/ Country) : Bangalore, India Engineering Batch : B.Tech - Mechanical Engineering, M.Tech - Aerospace Engineering (Aircraft Propulsion) Engineering Company/ Dream company to work for : Rolls Royce, GE Aviation, Pratt and Whitney, ISRO, CIR-NAL Area of Interest : Aircraft Propulsion, Gas turbine engines, CFD, CAD Project undertaken : 1) Flow instabilities in Afterburner 2) Design & development of sOAT VTOL UAV Any other info you want to share  : Good experience with experimental and CFD R&D in Air breathing propulsion domain, Actively looking for a career in Aerospace industry
  4. Saurabh Kamble

    What is 'CC' of a bike? How does it matter?

    Cc stands for cubic capacity of an engine cylinder.the amount or volume of air compresses inside the cylinder from BDC - TDC+ CV is nothing but cc of an engine eg:-endeavour 2.2L means 2200 CC .it really matters bcoz as more compression of air results in combustion which results in more power and torque respectively.
  5. Cmewellar David Giwa

    mechanical engineering channel

    creating a new sysyem and moving the world for better
  6. Preheating for uniform flow of heat through the metal to avoid stress and cracks.Post heating and controlled cooling after completion of welding to relieve stresses.
  7. admin

    BMW ActiveHybrid X6 automatic transmission

    BMW ActiveHybrid X6 automatic transmission
  8. Last week
  9. Andy Appan

    Machine Design II ppt

    Stops Solar, Wind, Coal, Oil, Gas, Nuke, Geothermal Energy Sources for free renewable energy at sea: 6000t/sqm at 6000m depth contained in Pressure Vessel is utilised at NTP. Catapult Energy: 1.23 mn lbs/sft THRUST Jet Alternate Renewable Energy. No GHGe. 24/365 Zero GHGe in Transport, Power Plant design. No climate change on no engine, no fuel, no-GHGe. Transport, CBM = HP*Hr/22 m3 Global GHG Emission is 36 bnt/yr GHG Emissions Reduction is 25 BnT/yr Net Global GHG Emission is 11 bnt/yr. 30 % Global GHGe :120 ppm for 400 ppm automotive, rail, ship, jet, missile, rocket,p.plant. Saves 14,410 Bn$/yr by Parts, Fuel. auto demo : 1 mn$, 1 yr. all demo 500 mn$, 2 yrs INV 100 mn$ get back 200 mn$ in 2 yrs INV 1000 mn$ get back 2000 mn$ in 3 yrs INV 120 bn$.ROI=500%.PAT=240bn$/yr in 4 yrs 12 plants at Atlantic, Indian, Pacific Oceans Muthukal Andy Appan, M.E, 50 yrs Expert, India. NO CARBON TRANSPORT, POWER PLANT No engine, no fuel, no GHGe, no heat Transport. no solar, no EV, no hydro cell. Automotive, Rail, Ship, Jet, Missile, Rocket. Also for Power Plant. speed 200, 600, 330knt,1200, 6, 30 mach. PPA 3C/kwh Bus Fare 1C/km on 100 kmph; 0.5 C on 200 kmph for same ton-hp one half fare on double speed for same ton-hp by andy bearing on low rolling friction. travels in snow, mud, marsh, water also. double speed for same ton-hp [or] Same speed for same ton-50% hp double load for same hp-speed by andy bearing.Equation: 2*ton*speed/hp= K no boiler, no turbine, no condenser in thermal power plants like CSP Solar, Nuke, Geothermal plants. INV 120 Bn$. PAT 240 Bn$/Yr IN 4 Yrs
  10. Andy Appan

    Internal Combustion Engines

    no carbon energy. Catapult Renewable Energy 1.23 mn lbs/sft Thrust from 6000 m ea water depth,of hydrostatic gravity force. 6000 t/sqm utilized for all transport, power plant. GHGeR= 25 bnt/yr. GHGe= 120 ppm IN WEST 120 Bn$ PAT 240 Bn$/Yr IN 4 Yrz IDEA $TAGE . DEMO FUND 1 Mn$- 500 Mn$ REQUE$TED LOCATION CHENNAI, INDIA OR $INGAPORE
  11. HVAC industry offers good potential for numerous careers in various fields as in Design & Drafting, Execution & Maintenance, AC Technicians and sales & Marketing. Apart, it also provides scope even for self employment and entrepreneurship. HVAC industry can even thrive in times of poor economy. According to US Bureau of Labor Statistics, a typical Technician can earn around US $18 dollars per Hour, narrating the work and economical potential of the industry. If any one want to know more about this topic Comment below
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  13. Hetal Patel


    Welding Engineering is an interdisciplinary branch of engineering that deals with mechanical,Metallurgical and productions aspects of engineering. Of course it means joining of two material pieces into one piece by using pressure/temperature/ Friction/vibrations etc,. A welding engineer should have sound knowledge in Welding metallurgy(=Physical metallurgy+phase transformations especially solid state phase transformations), Weldment design,Non destructive testing, some electrical aspects, Distortions due to phase transformations, and Safety measures too. Nope, you will not be considered as welding Engineer if you know above things only. You should also posses a certification from AWS (American welding society) that you are a CWE (Certified Welding Engineer), in which they will conduct an exam. And Codes and Standards for welding, no matter how creative you are you need to fallow these standards to design a weld.
  14. Hetal Patel

    Roadmap for your Mechanical Engineering profession

    Mechanical engineering is a conglomeration of various science disciplines. Some of these sub-disciplines are unique to mechanical engineering while others cross over with other areas of science. In either case, we will touch on five sub-domains of mechanical engineering quickly below: Robotics & Mechatronics: The science of mechatronics is the result of blending electronics and mechanics while robotics leverages mechatronics to create robots and automate manufacturing. Structural Analysis: The discipline of structural analysis focuses on how and why structural objects fail & their respective structural integrity. Mechanics: In its most basic form, mechanics is the study of forces and their effect upon matter. Mechanical engineers will frequently use mechanics to analyze and design various phases of engineering. Drafting & Design: Drafting is the mechanical engineers path to design and create a set of basic instructions for the manufacturing of a part, device, or assembly. Design is the ideation of a product or process that is followed by an illustration, drawing, or computer-generated example (often known as computer-aided design (CAD) or computer-aided manufacturing (CAM) processes). Thermodynamics: In its essence, thermodynamics is the study of energy. As applied to mechanical engineering, thermodynamics will often focus on the use of energy and transformation through a given system. What are Typical Qualities of Mechanical Engineers? - Listening skills: Mechanical engineers work on projects with other professionals, like computer scientists and architects, and must pay attention to details of a project and analyze diverse approaches from others in order to successfully finish the task at hand. - Creativity: Mechanical engineers design and build multi-faceted pieces of machinery and equipment. While some pieces of a project are already designed and vetted, new elements or assembling the entire project may take a great deal of creativity to complete on-time and on-budget. - Math skills: A mechanical engineer will frequently utilize principles of statistics, calculus, statistics, and other math-based disciplines during various stages of analysis, design, and troubleshooting. - Mechanical skills: Engineers will need to thoroughly understand basic engineering concepts and mechanical processes to help solve problems, design new systems, and properly deploy a new product. - Problem-solving skills: Lastly, a mechanical engineer will need to harness their knowledge to achieve a higher-order set of problem-solving skills in order to successfully master their respective trade. Licenses, Certifications, and Registrations for Mechanical Engineers Although licensure is not needed for entry-level mechanical engineer positions, professional mechanical engineers will need to earn a PE license. A Professional Engineering (PE) license allows for advanced levels of independence and leadership for a mechanical engineer within an organization. Once a mechanical engineer obtains a PE license, he/she can supervise other engineers, endorse projects, and offer services to the public. State licensure will requires a mechanical engineer to: - Obtain an ABET-accredited engineering degree - Receive a passing score on the Fundamentals of Engineering examination - Obtain at least 4 years of relevant work experience in the field - Successfully pass the Professional Engineering (PE) exam Licenses, Certifications, and Registrations for Mechanical Engineers Although licensure is not needed for entry-level mechanical engineer positions, professional mechanical engineers will need to earn a PE license. A Professional Engineering (PE) license allows for advanced levels of independence and leadership for a mechanical engineer within an organization. Once a mechanical engineer obtains a PE license, he/she can supervise other engineers, endorse projects, and offer services to the public. State licensure will requires a mechanical engineer to: - Obtain an ABET-accredited engineering degree - Receive a passing score on the Fundamentals of Engineering examination - Obtain at least 4 years of relevant work experience in the field - Successfully pass the Professional Engineering (PE) exam
  15. List of Books for CAD/CAM- CAD/CAM : Theory and Practice: Special Indian Edition by McGraw Hill Education CAD/CAM by Pearson Education Here I shared with two books for you, see if you wanted to study about this subject practically then do attend all labs, then I am sure you will get best out of it. And this is one of the scoring subject in mechanical engineering, just you need to focus from beginning and of course start preparation from syllabus because different university having different plan.
  16. Hetal Patel

    Role of Mechanical Engineer in IT industry

    First of all, since you are a mechanical engineer, i assume that when you joined college, you did not want to join an IT company. But since most of placement happens in IT, you jumped on the bandwagon and accepted their offer for lure of money, independence and brand name of Infosys.(Correct me in the comments if i am wrong).Training(as a Mech Engineer) With that assumption, i state that your branch of engineering is mostly irrelevant when you join Infosys. Many mechanical engineers, civil engineers join the company as freshers. Heads Up, it would be nice if you join some course before hand incase you are completely out of touch with programming after 4 years in Mech. The training will be intense and multiple technologies will be introduced. The key thing in clearing the Training is LEARNABILITY. If you have the aptitude, it should not be a problem.Job: Infosys doesn't have a power/construction/Machinery subsidiary. So, your job FOR CERTAIN will be in front of a desktop completely. The nature of your project depends on where the company feels it needs to push in more employees at the moment. It could be Java, banking(Finacle), Mainframe, Mobilities etc. Far way from any kind of Mechanical project. Infosys has big clients like Harley toyota who have core business in mechanical but as an Infoscion your job will be handling, supporting, developing, integrating IT division of such companies, making sure these clients do not face any hassles in runnings their IT operations
  17. It sounds to me like "shake allowance" and "shrinkage allowance" are conflicting requirements. Could you please elaborate?
  18. Jeff Toycen South Seattle Community College , Marine Construction and Design Shipbuilder Journeyman Pogram Ottawa Ontario Canada EOD Robots, Ships , Machine tools , Waste to fuel Systems , Variable Containment Vessels (Bomb Bags) Toycen Industries , Toycen Defense , , Recent Projects : Cuttermaster Professional , Tradesman DC , Tradesman Machinist
  19. Hetal Patel

    CAD software for design?

    Autocad - Ideal for 2D drafting The basic software for any mechanical engineer, If you learn this it’ll definitely help you. And do learn how to read the drawings in a sheet? It is good for your professional life. Solidworks For solid modelling and Moulding design. It is user-friendly. So, easy to learn and anyone can become a pro in it. Some startups and small scale industries using it widely for its low cost. CATIA For designing the wide range of sheet metal products, volume or surface modelling, sheet processing, assembly drawings, tool making, piping design, cast, forging, hydraulic and pneumatic design. Most of the aerodynamic related products are designed using CATIA. It's a comprehensive tool for the generation of 3D parts of all kinds. Aircraft and Auto part companies are utilising it widely. ProE It's 3D CAD/CAM/CAE feature-based product. Design, Simulations analyses, engineering calculations and documentation can be done by this. Specific for surface design kinda work.
  20. Henry Kurniadi

    Starting career as Mechanical Engineer in USA

    Learn to write properly? American companies won’t give a job to someone not American, with likely half-decent English, weely neely. Did you see how many unemployed people in the street? Sorry to say this bluntly.
  21. Henry Kurniadi

    Hydraulic press for tube flattening Force = Final flat area x Ultimate tensile strength x 1.2. This example part uses 1-inch-diameter ASTM A 500 tube (assumption thickness 0.063 inch). The nominal tensile strength of this material is 45,000 pounds per square inch. Following is the process for completing the calculations: Flattened area of rod = 2.5 sq. in. (again, assumption!) Tensile stress = 45,000 PSI Compressive strength = 1.2 x Tensile strength = 1.2 x 45,000 = 54,000 PSI Flattening force = Area x Compressive strength = 2.5 x 54,000 = 135,000 lbf. Flattening force in tons = 135,000/2,000 = 67.5 US tons Never use a press that is rated for the exact amount of required tonnage you have calculated. Always add a minimum of 20 percent for safety. In this case, the minimum press tonnage should be 81 to 91.
  22. Hetal Patel

    Starting career as Mechanical Engineer in USA

    US universities has a very good career fair and really good job opportunities. Doing an intern-ship or co-op during the masters will really help a lot in landing a good job for Mechanical Engineers. One tip to get hired is to get an appointment with university job - consultant services, they will help you find or even guide to opportunities that best fit your need. (Help you improve your current resume.) They will also help you discover your high skills and improve others you require. Networking is another key, try to get along with people and get in touch with their contacts. Social media profiles especially Linkdin should be updated regularly and right with your terms and goals. You could look to get recommendation from your professors and department heads and also ask them for opinion with best job opportunities which has wide scope, they are always happy to help and one of the best source to get information. Opportunities are many but its always how you grasp them makes the cut for a high paying job! You maybe investing a fortune for your degree so you should also look to make a fortune out of it. The average salary for a Mechanical Engineer is $78,479 per year in the United States. Salary estimates are based on 34,614 salaries submitted anonymously to Indeed by Mechanical Engineer employees, users, and collected from past and present job advertisements on Indeed in the past 36 months. The typical tenure for a Mechanical Engineer is less than 1 year.
  23. Henry Kurniadi

    Boiler Moisture Loss Question.

    The enthalpy reading must use the same source with the questions. i.e. question from book X must use enthalpy reading from book X. Book Y will give different reading.
  24. Hetal Patel

    books for prepration gate exams

    As it a mechanical related forums so I will advice mechanical related books You are in Pre-Final Semester that means you have less than 6 months to prepare for gate(Usually GATE exam occurs in March month).In my opinion, you should be at least very strong in basic common important subjects for GATE.Here I'll provide the subject with the books Author name.1. Thermodynamics(P.K. Nag)2. Machine Elemnts (V.B. Bhandari) 3. Fluid Mechanics 4.Material Science(O.P. Khanna)5. Automobile (Kripal Singh)6. Strength of Material (R.K. Rajput)7. Dynamics of Machine8.IC Engine (V. Ganeshan)9. Engineering Mathematics\10. Quatitative Apptitude(R.S. Aggrawal)
  25. A sandwich course is one which takes one more year than the usual course. In engineering, sandwich courses often have 5 years of course of study. The syllabus between the regular and the sandwich program differs basically in the added component-Industrial training. Sandwich students undergo 10 semesters of rigorous industrial training in an industry mostly which is part of the college, if not an outside one. Morning sessions will start by around 9:30 AM at the industry which is till lunch. Usual classes start only in the afternoon, say after 2:30 PM and will go on till late dusk. Mechanical sandwich is the course which deals with the industrial-mechanical concept based learnings. These, for instance, include the basic outline to an industry's working, introduction to the components being manufactured in the industry, the manufacturing processes, the testing and QC facilities and so on. Students also get exposed to the industry well before joining one, thus making them ready for the engineering world outside. The best aspect about the sandwich program is the compulsory internship which is their 7th semester, which usually is for 3 months. This sets them apart because not all regular students go for internships, but even if they do, the learning will not be the same in all cases due to less industrial exposure. Despite all these differences, everything else like college participation, placements, co curricular activities etc., is the same. Still, I've heard our greatest HOD of all time mention about how sandwich students waste their time in the name of industrial learning daily in the mornings. I have nothing to add to that! P.S : Everything said above is with reference to PSG Tech's program. Since I just graduated with a Bachelor's in Mechanical Engineering(regular), I was able to give my views from my perspective. Hope this helps.
  26. Joseph Toscano Pinto

    Hydraulic press for tube flattening

    Good evening everybody. My name is Joseph Toscano. I'm from Ecuador and I'm doing the construction of a hydraulic press for tube flattening for a local business. I was wondering if you know where can I find a formula or equation for the needed tonnage or pressure of the hydraulic actuator in order to flat a round tube of 1" ASTM A 500. Please, it would be really handful for me. Thank you so much for your attention.
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