Nocbiomaterials for bone tissue engineering applications. Fundamentals of gas cutting and welding ced engineering. Murugaiyan amirthalingam department of metallurgical and materials engineering iit madras. For successful application of welding to produced sound weld joints, it is utmost important to understand the science and technology behind the welding. Find the best welding speed to be used for welding 6 mm steel plates with an ambient temperature of 30 c with the welding transformer set at 25 v and current passing is 300 a. Asm offers a variety of learning options that will suit your schedule and budget. Dwivedi from iit roorkee made available by nptel elearning initiative. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. The gas metal arc and gas tungsten arc welding process generally use. Time interval between timer initiation and the first application of current needed to assure that electrodes contact the work and establish full force weld time. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures. Nptel notes pdf civil engineering 105 courses in pdf format useful for gate acoustics and daylighting in building nptel civil engineering notes pdf advanced foundation engineering nptel civil engineering notes pdf advanced geotechnical engineering nptel civil engineering notes pdf advanced hydraulics nptel civil engineering notes pdf advanced hydrology nptel.
Ahw atomic hydrogen welding caw constricted arc welding tig tungsten inertgas arc welding mig metal inertgas arc welding mag metal activegas arc welding pjw plasma jet welding paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gasmixture shielded metalarc welding magm magc co2shielded metalarc welding ngw narrowgap welding. They are mainly used to assemble many parts to make a system. Lecture notes tribology mechanical engineering mit. Discusses a wide variety of processes and materials from the viewpoint of their fundamental physical and chemical properties. Fundamental of welding science and technology prof.
Mod2 lec4 welding nptel design of steel structures. E i2rt where e is the heat energy, i is the current, r is the electrical resistance and t is the time that the current is applied. Metal casting is a labour intensive process automation. We have a separate course for mathematics model in engineering and science. Nov 30, 2010 nptel provides courseware in the form of video lectures and web courses. About swayam all courses national coordinators local chapters. You can also get course completion certification for some of the courses. Nptel, an elearning initiative by the 7 indian institutes of technology and the indian institute of science with the support of the mhrd, govt. There are various types of welding defects or discontinuity generally observed in welding joint. Sundaravalli, suchitra publications the book welding technology for engineering and technology studies. Nptel syllabus welding engineering video course course outline welding is one most the most commonly used fabrication techniques. Each of the above type of welding can be further classified depending on other micro level characteristics. Dwivedi, department of mechanical and industrial engineering,iit roorkee. The time for which welding current is applied in single impulse welding to the work.
Nptel video lecture topic list created by linuxpert systems. Nptel video course ocean engineering marine construction and welding subject coordinator prof. Pankaj biswas dept of mechanical engineering iit guwahati. This book is designed to meet the requirement of revised syllabus prescribed by the anna university. The limiting cooling rate for satisfactory performance is 6 cs at a temperature of 550 c. The national programme on technology enhanced learning nptel, a project funded by the ministry of human resource development mhrd was first conceived in 1999 to pave the way for introducing multimedia and web technology to enhance learning of basic science and engineering concepts. Welding metallurgy certificate program gain practical knowledge and experience in welding metallurgy.
The welding is carried out, so you have number of welding robots which are. In last lecture, i was discussing first about the oxy acetylene or oxy fuel gas welding techniques. And i am using like say an assembly robots or you can say welding robots to carry. Welding produces a solid connection between two pieces, called a weld joint. Mod2 lec4 welding lecture series on design of steel structures by dr. Shielded metal arc welding smaw is an arc welding process in which coalescence of metals is produced by heat from an electric arc that is maintained between the tip of a consumable covered electrode and the surface of the base metal in the joint being welded. We even have lectures for advanced rocket propulsion which will have to do with a great deal of different complex calculations. How to download all of the lectures in pdf for a course in. Gas welding and cutting oxyfuel welding, commonly referred to as oxy welding or gas welding is a process of joining metals by application of heat created by gas flame. Srinivasan, dept of electrical engineering, iit madras. So, last lecture i was discussing about cellulosic like categories of different.
This book is written to serve the needs of under graduate students embarking introductory course in welding technology. They produce permanent joint between the parts to be assembled. Nptel design of steel structures nptel video lectures from. Welding and joining processes materials science and. For the love of physics walter lewin may 16, 2011 duration. The course will be useful for engineering graduates as well as professionals working in the area of welding. Nptel lectures by faculty members metallurgical and. Welding sparks can cause fires and explosions sparks and spatter from the welding arc can spray up to 35 feet from your work flammable materials should be removed from the welding area or shielded from sparks and spatter have a fire extinguisher ready inspect area for fires 30 minutes after welding. Nptel notes pdf civil engineering 105 courses in pdf. Fundamental of welding science and technology intro video. They cannot be separated easily by application of forces. Welding or shielded manual metal arc welding process.
Lecture 29 gas metal arc welding i nptel video lecture topic list created by linuxpert systems, chennai get digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan lecture 30 gas metal arc welding ii lecture 31 gas tungsten arc welding lecture 32. Digital vlsi system design digital vlsi system design. Sometimes, blow holes and internal porosities are removed by welding action at high temperatures during hot working. Those who are interested to know more about welding engineering and the way it functions can learn about the same with our tutorials. Mechanical engineering online courses with video lectures. Damodar maity, department of civil engineering,iit guwahati. Find materials for this course in the pages linked along the left. Nonmetallic inclusions within the work piece are broken up. You will find all pdfs and also as mp3 file for all video lectures which are in nptel. This section covers two classifications related to weld joints. Digital vlsi system design nptel online videos, courses.
Design of steel structures video lectures, civil engineering video lectures, design of steel structures video tutorials, design of steel structures by duggal, design of steel structures by ramachandra,design of steel structures pdf. Metallurgical and materials engineering, iit madras. Introduction to machine design, methodology, strength, rigidity, fracture, wear, and material considerations in design, use of standards, selection of materials and processes. Metal casting processes indian institute of technology. Lecture notes on veer surendra sai university of technology. For getting a sound weld, the students are required to be aware of the science behind the welding phenomena, especially in the domain of weld metal solidification, heat transfer, heat treatment processes, strengthening mechanisms etc. Pankaj biswas department of mechanical engineering indian institute of technology guwahati lecture 14 physics of welding 6 metal transfer2 in last class, actually i was discussing about metal transfer. Pdf lecture 2 classification of welding processes i. Dear students, in this presentation, i will be talking about the introduction part of the welding engineering. Click on any video lecture link to view and download that video. Learn a variety of welding and joining processes and customize your certificate to match your interests and career path. This presentation will outline various defects associated with welding processes and possible remedial measures to avoid the welding defects. Students need to answer 5 assignment questions to complete the course, the answers will be in the form of written work in pdf or word. Nptel design of steel structures nptel video lectures.
You can find them according to your branch and subject in the below link national mission on education through ict this was initiated by iit madras. Nptel provides elearning through online web and video courses various streams. Satyamurty from iit kharagpur made available by nptel elearning initiative. Annual refresher programme in teaching arpit architecture and planning. A weld joint is the junction of the edges or surfaces of parts that have been joined by welding. In last lecture, i was discussing about gtaw that is gas tungsten arc welding process, actually gtaw welding process in. Nptel video lecture topic list created by linuxpert. Welding engineering online course video lectures by iit. This course offers detailed analysis and modeling techniques that apply to the different physical phenomena take place during welding. Dwivedi,department of mechanical engineering,iit roorkee. Metallic and nonmetallic segregations are also reduced or eliminated in hot working as diffusion is promoted at. Lecture notes welding and joining processes materials.
For more details on nptel visit nptel related courses. Design of steel structures video lectures, civil engineering video lectures, design of steel structures video tutorials, design of steel structures by duggal, design of steel structures by ramachandra,design of. Refrigeration and air conditioning delivered by iit kharagpur. Civil engineering video lectures nptel video lectures. Most of these courses consists 40 videos and 1 hour duration each. Joining of materials joining includes welding, brazing, soldering, adhesive bonding of materials. Chapter 3 introduction to welding in the navy as well as private industry, welding is widely used by metalworkers in the fabrication, maintenance, and repair of parts and structures.
1552 1194 311 948 1464 210 541 1425 887 536 965 1350 1305 166 993 874 758 1412 1538 833 615 536 527 68 1343 646 553 1405 490 1109 806 274 906 1201 1084 1271 207 1199 1119 1352 1463 511 1374 1229 642 176 1305 314