J0402-1-2 半導体ひずみセンサによるボルト締結部モニタリングシステム(締結・接合部の力学・プロセスと信頼性評価(1))

概要

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Lately there happened many loosening or failure accidents in bolted joints, such as trailer's wheel/hub joint structures and airplane mechanical systems. Put abstract text here. To avoid these accidents and increase the safety for long life operation of these traffic systems we present the idea of fastening force monitoring system, and discuss the availability of these systems in traffic or industrial fields. Lately the semiconductor strain sensor is attracted considerable attention for it's sufficient sensitivity, linearity and stability, so we selected this semiconductor strain sensor as the monitoring sensor. Then we examine the fundamental characteristics of these sensors, and confirm the twenty times higher sensitivity compared with traditional wire strain gages, linearity of less than 3.3% deviation and high stability of less than 1.4%/℃ under temperature change. And we can confirmed the availability of semiconductor strain sensor and wireless data transmission systems for fastening force or loosening behavior monitoring systems of bolted joints.
2009-09-12