混凝土超声检测信号频谱分析

• 作 者: 李为杜
• 机 构: 同济大学
• 出 处: 施工技术(建筑技术通讯)
• 发表日期: 1991年03期
• 关键词: 混凝土 信号频谱 超声检测 超声参数 波形 振幅 棍凝土 频谱分析 超声脉冲 均匀性

一、前言混凝土超声脉冲检测,采用“声时—振幅—波形”三个超声参数综合分析与评价混凝土的质量,尚属于透射检测范围内平均的定量、定性的相关分析。关于接收信号的波形和振幅,可以较好地反映混凝土的弹粘塑性、组织构造均匀性和密实度,但由于在检测技术上尚未完全解决稳定性和测读重复

I. INTRODUCTION The ultrasonic ultrasonic pulse detection of concrete uses the three ultrasonic parameters of “acoustic time-amplitude-waveform” to comprehensively analyze and evaluate the quality of concrete. It still belongs to the average quantitative and qualitative correlation analysis within the transmission detection range. The waveform and amplitude of the received signal can better reflect the elasto-viscoplasticity, structural homogeneity, and compactness of the concrete, but due to the fact that the stability and repeatability of the readings have not been fully resolved in the detection technology.