1. Ultrasonic microscope aids in spotting unsound welds;Adams;Welding J,1984
2. Nondestructive evaluation of resistance spot welding variables using ultrasound;Adams;Welding J,1985
3. Ultrasonic inspection of resistance spot welds;Allen,1986
4. Testing of spot welds;ANONYMOUS;Ultrasonics,1966
5. Standard practice for acoustic emission monitoring during resistance spot welding;ASTM;American Society for Testing and Materials,1996