Results 261 to 270 of about 10,476 (314)

Spot Weld Injuries of the Hand

Journal of Hand Surgery, 1994
Spot weld burns of the hand result in damage to structures deep to the skin by dissipation of heat locally causing extensive necrosis. This must be appreciated to optimize treatment.
G E, Giddins, J, Wilson-Macdonald
openaire   +2 more sources

RESISTANCE SPOT REPAIR WELDING OF SPOT WELDED STEEL SHEET

Materials and Manufacturing Processes, 2005
ABSTRACT Repeated resistance spot repair welding over the poor spot weld and interface fractured spot weld of low carbon steel sheet has been studied. The repair welding has been carried out at different parameters to optimize the welding current, weld time, and electrode force as the primary welding parameters for maximum joint strength.
P.K. Ghosh, Vinay Kumar Patel
openaire   +1 more source

Photodermatitis due to spot welding

British Journal of Dermatology, 1987
The case of a patient with a 1-year history of recurrent, severe facial dermatitis is reported. The role of ultraviolet radiation from arc welding or other equipment at work in inducing dermatitis is discussed.
S A, Shehade, P J, Roberts, B L, Diffey, I S, Foulds   +3 more
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Optimization of spot-welded structures

Finite Elements in Analysis and Design, 2001
This paper addresses the optimization problem of a spot-welded structure under fatigue life consideration. The so-called umbrella model of spot welds and the radial stresses around a spot weld were introduced into the optimization process. The idea was to study the optimization problem using the type of analysis which is now considered to be valid for ...
Zhang, Y., Taylor, D.
openaire   +2 more sources

Effect of Spot Weld Indentation on Spot Weld Nugget Characterization

2018 IEEE International Ultrasonics Symposium (IUS), 2018
When using the ultrasonic attenuation to size the nugget in the C-scan image, the contribution of indentation to ultrasonic wave attenuation will affect the accuracy of sizing the nugget. This paper studies the effect of the indentation on the sizing of spot weld nugget.
Xiaoli Han, Wentao Wu, Ling Xiao
openaire   +1 more source

Resistance of the Spot Weld

Transactions of the American Institute of Electrical Engineers, 1940
THE OUTPUT of resistance-welding machines is generally determined by Joule's law W=RI2 where R is the resistance of the heated metal being welded and I is the current flowing during the welding operation. With the majority of machines, welding current is determined by the internal impedance of the machine, the resistance of the weld being but a small ...
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The measurement of spot-welding current

Electrical Engineering, 1940
CURRENT is an essential factor in the complete specification of spot-welding conditions. Therefore, the need for the measurement of spot-welding currents arises, if optimum conditions determined in experimental laboratories are to be duplicated in production shops. Laboratory methods must be accurate and supplemented by facilities for ready calibration
Wendell F. Hess, Robert A. Wyant, Albert Muller   +2 more
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Testing of spot welds

Ultrasonics, 1965
Abstract With transducers inside the electrodes of a spot welder it is possible to examine each spot weld as it is made. Poor fusion, inclusions and cracks can all be clearly detected and distinguished without any delay to the welding ...
A. Matting, G. Wilkens
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Ocular Hazards of Industrial Spot Welding

Optometry and Vision Science, 1996
ABSTRACT Any welding process is perceived to be a radiation hazard to the eye. Site visits were made to an automotive assembly plant to assess the levels of optical radiation and other hazards on the production line. Measurements were taken with a scanning spectroradiometer and optical power and energy meters at operating working ...
B R, Chou, A P, Cullen
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Spot weld arrangement effects on the fatigue behavior of multi-spot welded joints

Journal of Mechanical Science and Technology, 2011
In the present study, the effects of spot weld arrangements in multi-spot welded joints on the fatigue behavior of the joints are studied. Three different four-spot welded joints are considered: one-row four-spot parallel to the loading direction, one-row four-spot perpendicular to the loading direction and two-row four-spot weld specimens.
Soran Hassanifard, Mohammad Zehsaz, Firooz Esmaeili   +2 more
openaire   +1 more source