【摘要】 表面无损检测探测信号包含运动学和动力学两部分信息。运动学信息主要反映混凝土内部缺陷结构特征的变化,而频率、振幅等动力学信息反映混凝土密实度、弹性模量等物理力学性能的变化。运用希尔伯特变换提取"三瞬信息",并运用到混凝土结构缺陷探测实际资料解释中。结果表明,动力学参数对缺陷物理性状变化反映更敏感,更有利于缺陷的判断,且能提高资料解释的精度。更多还原

【Abstract】 Surface nondestructive testing signals include kinematic and kinetic parameters.The kinematic parameters mainly reflect the changes of structural characteristics of concrete interior defects,while the kinetic parameters such as frequency and amplitude reflect the changes of physical and mechanical properties as concrete compactness and elastic modulus."Three-instantaneous information" is extracted by Hilbert transformation and used to interpret the practical data of concrete structural defect detection.The results show that kinetic parameters are more sensitive to the changes of physical properties of defect and favorable to the judgment of defects and the improvement of data interpreting reliability.更多还原