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1.前言射线照相法中有关缺陷位置的测定,早在20年前,本刊即已发表“关于缺陷位置测定的立体照相法”等文章;此后,又通过多种多样的方法加以试验研究,作为结论是:只要明确射线源的高度和移动距离,就可以算出缺陷位置;故而这一方法得到确认并建议试用。然而,由于所提方法大多数未作关键性说明,以致对于各种公式的建立,适用限界等均未能十分明确。为此,本文就有关方法中的标线·标点法及所谓规定的方法的要点解释如下.
1. Introduction Radiographic methods for determining the location of defects, as early as 20 years ago, the publication has published “about the determination of the location of the defect stereo photography” and other articles; thereafter, through a variety of methods to be tested The study concluded that as long as the height of the ray source and the distance traveled are clear, the location of the defect can be calculated; therefore, this method is confirmed and suggested for trial. However, since most of the proposed methods are not critical, they have not been very clear about the establishment of various formulas and their application of limits. To this end, this article on the method of marking the punctuation method and the so-called provisions of the main points are explained below.