Development of Ultrasonic Transducer Testing Austenitic Stainless Steel Weld
A transducer, as applied to ultrasonic testing, is the means by which electrical energy is converted into acoustic energy and back again. The device, adapted for UT, has been called a probe, a search unit, and a transducer. Due to inner special structure, the ultrasonic testing of the coarse grains material such as welds in austenitic stainless steel is very difficult and demands a special transducer. The vibration equivalent circuit and vibration equation of the ultrasonic transducers for such usage are analyzed and main factors influencing them are studied at length in this paper. Proved through the theory analysis, a transducer with brand-band and higher sensitivity and resolving should be designed followed as acoustic matching between piezoelectric crystal and load, electric-acoustic matching between the crystal and acoustic receiver, as well as the high resolving power. Finally, the transducers meeting testing demand are developed. The transducers initial pulse width is 1.5 cycles and quality factor in -6db is 1.
Coarse Grains Material Transducer Ultrasonic Testing(UT)
Yubao CHEN
Guangdong Special Equipment Inspection Institute Floor 6,Haijing Center,No.144-152,Huangpudadaozhong,Guangzhou,510655,China
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
609-613
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）