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简述超声衍射时差(TOFD)法的基本原理,提出反求工程在TOFD法无损检测中进行三维计算机辅助设计(CAD)建模的方法,并给出缺陷计算公式及CAD建模效果模拟图。
A brief introduction to the basic principle of TOFD method is proposed. The method of 3D computer aided design (CAD) modeling in the nondestructive testing of TOFD by reverse engineering is proposed. The calculation formulas of defects and the simulation of CAD modeling results are given.