Prediction of static fracture strength of laser-welded lap joints by numerical analysis

2004 ◽  
Vol 18 (7) ◽  
pp. 524-530 ◽  
Author(s):  
T Terasaki ◽  
T Kitamura
2009 ◽  
Vol 2009.58 (0) ◽  
pp. 81-82
Author(s):  
Hiroaki KYUNO ◽  
Takamasa OKOCHI ◽  
Keiichiro TOHGO ◽  
Yoshinobu SHIMAMURA ◽  
Hiroyasu ARAKI

1991 ◽  
Vol 226 ◽  
Author(s):  
Masahiro Jono ◽  
Atsushi Sugeta

AbstractFracture strength of amorphous A1203 insulating thin film coated on a Fe-42%Ni base metal was Investigated under static and cyclic loadings by using four point bending apparatus. It was found that the both static and cyclic fracture strength of thin film decreased with increasing coating thickness and also fracture under cyclic loading occurred at a strain below the static fracture strength. Observations In detail by the optical and scanning electron microscopes revealed that the splash particles deposited in coating process caused crack initiation origins. Evaluation method of fracture strength of thin films was discussed based on the fracture mechanics approach.


2011 ◽  
Vol 71 (14) ◽  
pp. 1671-1676 ◽  
Author(s):  
Sang-Young Kim ◽  
Jae-Mean Koo ◽  
Dave (Dae-Wook) Kim ◽  
Chang-Sung Seok

2021 ◽  
Vol 2021 (1) ◽  
pp. 16-6
Author(s):  
Hubert Danielewski ◽  
◽  
Andrzej Skrzypczyk ◽  
Włodzimierz Zowczak ◽  
Dariusz Gontarski ◽  
...  

This article presents a numerical analysis of laser-welded flange pipe joints. The presented results concern the welding of low carbon S235JR and stainless 316L steels using a CO2 laser in lap and fillet joint configurations. The estimation of welding parameters was achieved using Simufact Welding software and numerical simulation, where output power, feed rate, efficiency and intensity distribution (Gaussian parameter) were analysed. In accordance with the established model, a thermo-mechanical simulation was performed. The calculated joint geometries show good agreement with experiments; therefore, the obtained results were used to study selected joint properties of both joint types. Stress-strain distribution was estimated on the basis of thermomechanical analysis. Weld bead geometry obtained from numerical simulation was compared with the results from trial joints. The numerical model established for both joint configurations shows good agreement with experimental results and were assumed to be accurate. The results of the performed analysis shown some advantages of the use of this configuration of lap joints in flange pipe joints.


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