Ultrasonic assessment of tension shear strength in resistance spot welding

Abbas Moghanizadeh

doi:10.1117/12.2076516

5 May 2015 Ultrasonic assessment of tension shear strength in resistance spot welding

Abbas Moghanizadeh

Proceedings Volume 9439, Smart Materials and Nondestructive Evaluation for Energy Systems 2015; 94390V (2015) https://doi.org/10.1117/12.2076516
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

Resistance spot welding is extensively used to join sheet steel in the automotive industry. Ultrasonic non-destructive techniques for evaluation of the mechanical properties of resistance spot welding are presented. The aim of this study is to develop the capability of the ultrasonic techniques as an efficient tool in the assessment of the welding characterization. Previous researches have indicated that the measurements of ultrasonic attenuation are sensitive to grain- size variations in an extensive range of metallic alloys. Other researchers have frequently described grain sizes which are able to have significant effects on the physical characteristics of the material. This research provides a novel method to estimate the tension-shear strengths of the resistance spot welding directly from the ultrasonic attenuation measurements. The effects of spot welding parameters on the ultrasonic waves are further investigated. The results confirm that it is possible to determine the spot welding parameters for individual quality by using ultrasonic test.

Citation Download Citation

Abbas Moghanizadeh "Ultrasonic assessment of tension shear strength in resistance spot welding", Proc. SPIE 9439, Smart Materials and Nondestructive Evaluation for Energy Systems 2015, 94390V (5 May 2015); https://doi.org/10.1117/12.2076516

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KEYWORDS

Ultrasonics

Signal attenuation

Resistance

Acoustics

Scattering

Electrodes

Metals

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