钢筋混凝土梁面内震源声速的研究

2011 IEEE 7th International Colloquium on Signal Processing and its Applications Pub Date : 2011-03-04 DOI:10.1109/CSPA.2011.5759835

N. Nor, N. M. Bunnori, A. Ibrahim, S. Shahidan, S. N. M. Saliah

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引用次数: 22

摘要

本文研究了基于声发射波形分析的钢筋混凝土梁面内震源的声速。采用铅笔式压裂(PLF)在选定的源位置产生应力的突然释放。考虑了三个阈值水平来确定RC梁中的波速。结果表明，波速与阈值水平有关，阈值水平越高，波速越慢，波速越慢;波在RC光束中以2410米/秒到4000米/秒的速度传播。随着单个传感器与同步传感器之间距离的增加，波速也随之减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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An investigation on acoustic wave velocity of reinforced concrete beam in-plane source

This paper is presented an investigation on acoustic wave velocity of reinforced concrete beam in-plane source based on AE waveform analysis. Pencil Lead Fracture (PLF) was used to generate sudden release of stress at selected source location. Three threshold levels were considered for determining wave velocity in RC beam. It can be concluded that the wave velocity was dependent to the threshold levels, high threshold level would prolong the TOA of the wave and the velocity would be reduced; which the wave travels in the RC beam at velocities in the range 2410 m/s to 4000 m/s. The wave velocity also decreased as the distance from individual sensor to synchronize sensors increased.

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2011 IEEE 7th International Colloquium on Signal Processing and its Applications

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