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Lakshminarayanan, A. K.
- Evaluation of Micro Structure and Tensile Shear Load of Friction Stir Spot Welded Automotive Steel
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Authors
Affiliations
1 Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam, Chennai, IN
1 Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam, Chennai, IN
Source
Manufacturing Technology Today, Vol 12, No 8 (2013), Pagination: 17-22Abstract
Low alloy low carbon steels are extensively used for automotive applications mainly due to their good impact resistance, specific strength and formability. Electrical Resistance Spot Welding (ERSW) is currently used as a method of joining sheet metal together in automotive industries. Generally materials of similar thickness are blanked, preformed and then welded together to make parts like automobile door, bodies and number of similar parts. ERSW process is relatively faster, but it involves large amounts of current to make joints and cooling equipment to keep the electrode in normal working temperature. Friction stir spot welding (FSSW) is a relatively new type of welding process, which is a derivative of friction stir welding. In this process, a rotating tool is plunged in to the material under high force to create a bond. Joints are made by FSSW process and the macrostructure, microstructure and lap shear tensile strength of these joints are characterized. The metal flow during FSSW process is investigated on samples to gain better understanding of welding mechanisms. The results of the lap shear tensile test indicated that the combination of 900 rpm, 0.18mm plunge depth and 20s dwell time yielded a maximum lap shear tensile strength of 5.9 KN.Keywords
Friction Stir Spot Welding, Automotive Steel, Lap Shear Tensile Test.- Understanding the Role of FSW Process Parameters on Strength Properties of Ferritic Stainless Steel Joints
Abstract Views :150 |
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Authors
Affiliations
1 Centre for Materials Joining & Research (CEMAJOR), Dept. of Manufacturing Engg., Annamalai University, Annamalai Nagar, IN
1 Centre for Materials Joining & Research (CEMAJOR), Dept. of Manufacturing Engg., Annamalai University, Annamalai Nagar, IN
Source
Manufacturing Technology Today, Vol 10, No 2 (2011), Pagination: 10-18Abstract
The effect of rotational speed, welding speed and tool shoulder diameter on the tensile and impact properties of AISI 409M ferritic stainless steel joints made by friction stir welding are investigated. The experiments were conducted based on three-factor five-level central composite rotatable design and empirical relationships were established between the process parameters (rotational speed, welding speed and tool shoulder diameter) and quality characteristics (tensile strength and impact toughness) of friction stir welded ferritic stainless steel joints. Furthermore, the numerical multiobjective optimisation was used to optimise the friction stir welding process parameters.Keywords
Ferritic Stainless Steel, Tensile Strength, Impact Toughness, Optimisation.- Process Parameter Selection for Friction Stir Welding of Cast A413 Aluminium Alloy Using Taguchi Experimental Design
Abstract Views :173 |
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Authors
Affiliations
1 Dept. of Mechatronics Engg., Kongu Engg. College, Perundurai, Erode, IN
2 Dept. of Mechanical Engg., Coimbatore Institute of Technology, Coimbatore, IN
3 Centre for Materials Joining Research (CEMAJOR), Dept. of Manufacturing Engg., Annamalai University, Annamalai Nagar, IN
1 Dept. of Mechatronics Engg., Kongu Engg. College, Perundurai, Erode, IN
2 Dept. of Mechanical Engg., Coimbatore Institute of Technology, Coimbatore, IN
3 Centre for Materials Joining Research (CEMAJOR), Dept. of Manufacturing Engg., Annamalai University, Annamalai Nagar, IN