13 Result(s)
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Article
Misalignment monitoring between electrodes and a rivet in three-sheet resistance element welding based on dynamic resistance
Resistance element welding (REW) has been applied to join various dissimilar materials such as steel and aluminum alloy. In this study, we propose a monitoring methodology that can predict misalignment between...
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Article
Improvement of fatigue performance by applying tandem GMAW in lap joints with gaps
Chassis parts that support the entire load of an automobile, such as the frame, cross-member, and lower arm, require fatigue performance. Chassis parts require different fatigue performances, depending on the ...
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Article
Weld fatigue behavior of gas metal arc welded steel sheets based on porosity and gap size
Galvannealed (GA) steel sheet is applied to the chassis parts of automobiles with fatigue durability important through gas metal arc welding (GMAW). However, the pores due to zinc vaporization and gaps of the ...
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Article
Effects of welding current and torch position parameters on bead geometry in cold metal transfer welding
This study investigated the effects of welding current and torch position parameters, including torch-aiming position, travel angle, and work angle, on bead geometry in single-lap joint gas metal arc (GMA) wel...
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Article
Effects of welding current and torch position parameters on minimizing the weld porosity of zinc-coated steel
This study involves an investigation of the effects of the welding current and torch position parameters, including the travel angle, torch-aiming position, and work angle, on reducing the weld porosity in the...
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Article
Development of fuzzy controller for inverter DC resistance spot welding using system identification
Adaptive Resistance spot welding (RSW) technologies have been developed and applied within the automotive industry to improve the weldability of automotive steels, including conventional and high strength stee...
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Article
Effect of cover sheet on dissimilar three-steel sheets resistance spot welding
The use of high-strength steels on car bodies has been increasing gradually for lightweight vehicle body. In general, the resistance spot weldability of high-strength steels is poor compared to that of low-car...
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Article
The development of a quality prediction system for aluminum laser welding to measure plasma intensity using photodiodes
Lightweight metals have been used to manufacture the body panels of cars to reduce the weight of car bodies. Typically, aluminum sheets are welded together, with a focus on weld quality assurance. A weld quali...
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Article
New methods of resistance spot welding using reference waveforms of welding power
The use of high strength steels in car bodies has increased gradually in recent years, contributing to lighter weight vehicles. In general, the resistance spot weldability of high strength steels is poor when ...
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Article
Effect of a conically shaped hollow electrode on advanced high strength steel in three-sheet resistance spot welding
Application of high strength steel is one of the most promising solutions to the problem of vehicle weight reduction. However, weldability problems occur when three sheet metals of the high strength steel are ...
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Article
Quality estimation of resistance spot weld based on logistic regression analysis of welding power signal
Resistance spot welds have a major effect on the stiffness and crashworthiness of a car body. Therefore, it is necessary to implement a monitoring method which predicts the weld quality of the resistance spot ...
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Article
Development of candidate biomarkers for pancreatic ductal adenocarcinoma using multiple reaction monitoring
Pancreatic ductal adenocarcinoma (PDAC) is the fourth most frequent cause of cancer mortality in the United States. Because CA 19-9 increases not only in PDAC, but also in benign conditions, there is urgent ne...
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Article
Laser welding of cast iron and carburized steel for differential gear
This study concerned laser welding replacing the traditional bolted connection of the ring gear and differential case in the power train of the automobile. Laser welding is necessary to reduce weight and manuf...
