研究混凝土等脆性材料在拉伸载荷作用下断裂行为的常规实验手段是电阻应变片法。由于测得数据的离散性与材料的非均质性相混淆,使得实验结果的可靠性不高。本文从基本原理与实验技术两方面较详尽地阐述了一种称为“云纹干涉法”的高灵敏度、全场,实时应变分析方法,进而介绍了使用本方法对带缺口混凝土试件应变场的调查过程与实验结果。 The conventional experimental method to study the fracture behavior of brittle materials such as concrete under tensile load is the strain gauge method. Due to the discrepancy of measured data and material heterogeneity, the reliability of experimental results is not high. This paper elaborates a highly sensitive, full-field and real-time strain analysis method called “Moiré Interferometry” from both the basic principle and the experimental technique. Furthermore, the method of applying this method to the strain field of notched concrete specimen The investigation process and experimental results.