ラム波用電磁超音波センサを用いた引っぱり試験中のオンサイト応力評価

概要

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In recent years, investigations into the changes in the microstructure during the processing of functional metal materials have been carried out by many researchers, Therefore, it is required that the change in the material characteristic during processing by a nondestructive evaluation method be evaluated. However, conventional technology has been restricted to a static material characteristic evaluation. For example, a strain gauge has the problem that it can influence the measurement conditions of the tensile test and can only evaluate the position at which the strain gauge is attached. We then tried to develop a non-contact stress measurement system for tensile testing using an EMAT with a Lamb wave as a first step for the material characterization evaluation during a mechanical The EMAT measures the propagation time of a Lamb wave between the receiver and a transmitter during the tensile testing. The interval between the transmitter and the receiver of the first set is 10mm and can move in the direction of the tensile load. In this presentation, the specifications of the measurement system and the evaluation results are reported.
2006-05-25