caa a22 4500 606172777 CHVBK 20210128100730.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s10921-015-0277-9 doi (NATIONALLICENCE)springer-10.1007/s10921-015-0277-9 Investigation of Clamping Effect on the Welding Sub-surface Residual Stress and Deformation by Using the Ultrasonic Stress Measurement and Finite Element Method [Elektronische Daten] [Yashar Javadi, Mahmood Hasani, Seyedali Sadeghi] In this study, sub-surface residual stress and deformations, produced by the welding process, are investigated by using ultrasonic stress measurement method and finite element (FE) simulation. The FE analysis is employed to evaluate the residual stresses and deformations caused by the tungsten inert gas welding of 304L stainless steel plates. Residual stresses obtained from the FE analysis are then used to validate results of the ultrasonic stress measurement method, which is fulfilled by employing longitudinal critically refracted ( $$L_{CR})$$ L C R ) waves. By using four different frequencies of ultrasonic probes, the sub-surface residual stress fields are mapped in four different depths of the examined material. Two different plates are welded with and without the use of clamp to investigate the clamping effect on the residual stress and deformation. By employing the through-thickness measurement of residual stresses, the clamping effect on the sub-surface distribution of the residual stresses is also studied. As a result, the $$L_{CR}$$ L C R ultrasonic method is accurate enough to distinguish the surface and sub-surface residual stresses in the clamped and non-clamped welding plate. Consequently, the longitudinal residual stresses have been increased by using the clamp during the welding of stainless steel plates. However, using the clamp significantly influences the amount and distribution of longitudinal residual stress in the base metal. Regarding the welding deformation results, it has been concluded that employing the clamp considerably decreases the deformations of the stainless steel plates. Springer Science+Business Media New York, 2015 Clamping effect nationallicence Finite element welding simulation nationallicence Ultrasonic stress measurement nationallicence Sub-surface stress nationallicence Welding residual stress nationallicence Welding deformation nationallicence Javadi Yashar Department of Mechanical Engineering, Islamic Azad University, Semnan Branch, Km. 5 of Semnan-Damghan Road, Semnan, Iran aut Hasani Mahmood Department of Mechanical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran, Iran aut Sadeghi Seyedali Department of Mechanical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran, Iran aut Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/1(2015-03-01), 1-11 0195-9298 34:1<1 2015 34 10921 https://doi.org/10.1007/s10921-015-0277-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10921-015-0277-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Javadi Yashar Department of Mechanical Engineering, Islamic Azad University, Semnan Branch, Km. 5 of Semnan-Damghan Road, Semnan, Iran aut NATIONALLICENCE 700 1- Hasani Mahmood Department of Mechanical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran, Iran aut NATIONALLICENCE 700 1- Sadeghi Seyedali Department of Mechanical Engineering, Amirkabir University of Technology, 424 Hafez Ave., Tehran, Iran aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/1(2015-03-01), 1-11 0195-9298 34:1<1 2015 34 10921