Ihi Inspection and Instrumentation Co., Ltd.

Mami Ohmori

Hideyuki Nakamura

Hiraku Kawasaki

Seiichi Ohmori

A tensile load is applied to the test body to increase with time, and an AE wave displacement in the test body is detected (step S). From the detected AE wave, waveform data are generated for each time section (step S). For each section, from the waveform data, spectrum data are generated (step S), a peak of an intensity in the spectrum data is specified, a data part in which an intensity is at least a value of a set percentage of the peak in the spectrum data is extracted as processing target data (step S), and from the processing target data, the most frequent value of frequency gravity centers is specified (step S). The most frequent value for each section and a tensile load applied to the test body in each section are output as strength evaluation data for evaluating a tensile strength of the test body (step S).

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Yokohama, Japan

Mami Ohmori