The simple and intuitionistic formulas were given based on pulsed echo principle, in which the effect of dispersion and transverse sensitivity were considered.

• 基于脉冲回波原理，并考虑频散及横向效应等因素的影响，提出了减小频散影响的修正系数，并据此给出了简单、直观的管道裂纹检测公式；