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Welding residual stress impact on fatigue life of a welded structure
Welding in the World, 2013A welded component has been fatigue tested and then analyzed using both the nominal stress approach and the fracture mechanics approach. The nominal stress approach predicted the wrong failure location as well as a very short fatigue life. A welding simulation was then performed to understand the residual stresses generated in the structure by welding.
Lingyun Pan +8 more
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Effect of Vibratory Weld Conditioning on Weld Impact Toughness
Materials and Manufacturing Processes, 2009With vibratory weld conditioning, the enhancement of weld metal microstructure can be achieved. The mechanical properties, level of residual stresses, and deformation can also be affected. This article provides the research results of the effect on weld metal impact toughness.
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Impact of Welder Performance on the Integrity of Welds, and Enhancement of Welds Quality
MPWT 2019, 2019Absrract Piping and pipeline are considered to be 60-70% of the oil and gas industry equipment. One of the most crucial factors to complete high quality projects within planned schedules is to focus on the quality of welding activities.
Qasem A Fandem +2 more
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Effect of welding conditions on the impact toughness of welded joints in titanium alloys
Welding International, 2011Effect of the welding conditions and annealing on the impact strength of different heat-affected areas of the titanium welded joints is studied. Maximum impact strength is established in the range of 350–550°C, in practice this coincides with the temperature peaks for short-time strength and fatigue life.
V. Yu. Zubarev +2 more
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AIP Conference Proceedings, 2004
Resistance spot welds in most current finite element crash models are characterized as a rigid link at the location of the weld which transfers the load but is not designed to fail. Newer weld elements in the popular finite element analysis codes include the option of incorporating a failure criteria for the weld element.
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Resistance spot welds in most current finite element crash models are characterized as a rigid link at the location of the weld which transfers the load but is not designed to fail. Newer weld elements in the popular finite element analysis codes include the option of incorporating a failure criteria for the weld element.
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Impact of Welding Sequence on the CRDM Nozzle-to-Vessel Weld Stress Analysis
Flaw Evaluation, Service Experience, and Materials for Hydrogen Service, 2004A three-dimensional finite element model is presented to simulate the welding process of the side-hill control-rod-drive-mechanism (CRDM) nozzle to the vessel head. Emphasis is given to how the weld is laid out in the analysis so that accurate residual stress results can be obtained while the required computing time is viable.
Yaoshan Chen +2 more
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Impact welding and ripple formation
Journal of Applied Physics, 1975Rippled metallic surfaces have been produced as a result of ballistic impact as well as the movement of high-pressure (explosive) gas over a metal plate. Such loading conditions produce a strong shock wave. Under the high pressure, metal plate surfaces are plastically deformed and sometimes are welded together. These welds are sometimes associated with
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Impact of External Magnetic Field on Weld Quality of Resistance Spot Welding
Journal of Manufacturing Science and Engineering, 2011Electromagnetic stirring (EMS) has been demonstrated to have significant effect on molten metal in terms of crystal orientation, grain refinement and macro appearance of solidified structures by making use of Lorentz force. In the present study, resistance spot welding (RSW) process of 1.25 mm thick dual-phase steel DP780 with and without the external ...
Qi Shen +3 more
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Laser impact welding of aluminum to brass
Journal of Materials Processing Technology, 2019Abstract The microstructure and mechanical properties of aluminum and brass welding joints were investigated. The microscopy image revealed that the welding interface was flat in the case of using lower laser pulse energy. When the laser pulse energy was higher than 1200 mJ, the wavy interface and local melting blocks were created simultaneously ...
Xiao Wang +4 more
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Impact Of Welding Parameters On The Stability Of Gas Metal Arc Welding Process [PDF]
, 2014 The stability of the welding process has a significant impact on the assurance of the required level of quality of welded joints. The increasing stability of the welding process reduces the probability of forming imperfections in the weld metal.
Lukić, Uroš +5 more
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