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    题名: The Microsensor Technology Using to Identify the Initiation Time of Impact Induced Elastic Waves
    作者: 楊龍杰;Yang, Lung-jieh;Wu,Tsung-tsong;Kang,Shung-wen
    贡献者: 淡江大學機械與機電工程學系
    关键词: Transient Elastic Wave;Impact Initiation;Microsensor
    日期: 2002-10-01
    上传时间: 2010-03-26 19:43:51 (UTC+8)
    出版者: 淡江大學
    摘要: The microsensor technology was used here to identify the initiation time of an impact shock. The shock excitation caused by an impact sphere with a diameter of 4-6 minimeters could generate transient elastic waves in concrete structures. Such elastic waves with frequency above 100 kHz are the active emission sources for defect detection in the non-destructive testing (NDT) of concrete using transient elastic waves. In this paper, an impact sphere, which was packaged with a piezoresistive microsensor, was fabricated to verify this new idea. The microsensor after packaging has the maximum output voltage of 100 mV and the rise time less than 5 microsecond subjected to a sphere impact. The promising result of the initiation time experiment showed that the calibrated (short circuit) signal was left behind the microsensor signal for 40 nanoseconds.
    關聯: 淡江理工學刊=Tamkang journal of science and engineering 5(3), pp.121-127
    DOI: 10.6180/jase.2002.5.3.01
    显示于类别:[機械與機電工程學系暨研究所] 期刊論文

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