【摘要】 根据焦散线法和弹塑性断裂力学原理，提出和分析了测量裂纹尖端ＣＯＤ的三种实验方法，对焦散线法和伪焦散线法联合测定ＣＯＤ的方法进行了深入的研究，并列举了该法的具体应用，从而改进了ＴｈｅｏｃａｒｉｓＰＳ提出的经典焦散线测量方法。更多还原

【Abstract】 Based on the principle of elasto -plastic fracture mechanics and the caustics method,three experitnental methods for the measurement of COD are proposed and discussed. In par-ticular,an in-depth study is made of the method of combining caustics and pseudOcaustics. The application of the method is illustrated with an example. The classical caustics methodproposed by TheocarisP,S.is improved.更多还原