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一、前言超声脉冲法是通过向被测结构物发射超声脉冲波,以测得的声学参数为基本特理量,在这些物理量与结构物之间建立相关关系,由此对结构的物理力学性质进行评价。这种方法以往多用于金属结构探伤,近年来也广泛用于结构混凝土有关性能的检测,例如:结构混凝土的强度、内部缺陷、弹性和非弹性性能、耐久性、受冻层深度等,本文着重介绍混凝土匀质性的检测。所谓匀质性检验,是对整个结构物或同
I. INTRODUCTION Ultrasonic pulse method is to transmit the ultrasonic pulse wave to the structure to be measured and take the acoustic parameters measured as the basic special quantity to establish the correlation between these physical quantities and the structure so that the physical and mechanical properties of the structure Evaluation. In the past, this method was mostly used for the detection of metal structures. In recent years, it has also been widely used in the testing of the performance of structural concrete such as the strength of concrete, internal defects, elastic and inelastic properties, durability, depth of frozen layer, etc. Describe the detection of concrete homogeneity. The so-called homogeneous test, is the entire structure or the same