Development of Instrumentation System for Stress Intensity Factor Measurement using Piezoelectric Material

概要

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The authors proposed a stress intensity factor (SIF) measurement method using a piezoelectric element in the previous researches. In this study, a simple and low cost instrumentation system for stress intensity factor measurement is developed to be able to use in field data collection. The system is consists of two modules: PVDF film based stress measuring system and microcontroller based data acquisition system. The stress measuring system is designed to measure small signal from PVDF film and to monitor multi-channel signals. To verify performance of the instrumentation system, experiments were carried out by using fatigue-testing machine and smooth specimens that have a single artificial crack. The result shows that the system has capabilities to measure SIF of two dimensional crack with good accuracy.
社団法人日本船舶海洋工学会の論文
2005-03-20