【摘要】 提出了混凝土结构中任意缺陷的应力波反射成像测试与诊断方法。利用特定的数据采集方法和应力波叠前偏移成像算法,测试预埋复杂形状缺陷的混凝土试件,分别采用不同数量的应力波信号获得了多张叠前偏移剖面图像。试验结果表明,随着应力波数量的增加,叠前偏移剖面能够反映的缺陷区域更广,成像更加清晰。当利用足量应力波信号进行叠前偏移成像处理时,试验结果诊断误差很小,能满足工程的精度要求。更多还原

【Abstract】 A stress wave reflection imaging(SWRI) method is presented to test and diagnose the complex defects in the concrete structure.The method for collecting stress wave data and the SWRI algorithm are used to detect the specimen with embedded complex defects,the corresponding pre-stack migration images are obtained by using different numbers of collected data.Results show that with the increase of the number of stress wave,the clear imaging region became broader and the image of the defect became clearer.Using adequate stress wave signals in pre-stack migration processing,there will be little error in SWRI diagnostic results,thus meeting accuracy requirements on engineering practice.更多还原