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一、前言诺模图又称为算图,是工程数学中的一个常用数学工具。《GB3323—87》标准就采用了三线式诺模图。为了能更好地理解和应用它,笔者在这里对诺模图的原理、制作及应用作以介绍,以求能给广大探伤工作者提供方便。在工程数学中为了使复杂的计算变为直接的视定结果,常将事先算好的数据制成图表或制成诺模图。诺模图是以一个简单的几何关系来表述一个计算关系的图形。诺模图种类很多,这里以三线式诺模图为例进行说明。
First, the preface Promise Nomogram, also known as the calculation diagram, is a common mathematical tool in engineering mathematics. The “GB3323-87” standard uses a three-wire nomogram. In order to better understand and apply it, I here to introduce the principle, production and application of norm diagram, in order to provide the majority of testing workers with convenience. In engineering mathematics in order to make complex calculations into direct visualization results, often calculated in advance of the data into a chart or make a nomogram. The nomogram is a simple geometric relationship to express a relationship between the calculation of graphics. There are many types of Norm diagram, here to three-dimensional Norm diagram as an example to illustrate.