一、前言所谓应力涂料是指用作应力分析的特殊涂料,因为非常脆,在学术上也称为脆性涂料,把这种涂料涂到整个试件上,待干燥和硬化之后加载,当应力达到一定基准以上时,涂膜上就会出现裂纹。这些裂纹群是和物体表面上的主应力线群直交而产生,并且在裂纹间距和应力值之间可以看到对应性,因此若已知涂料膜上产生裂纹的应力条件,那么根据裂纹模样,即能掌握应力分布情况,从而就可以预知危险区域。应力涂料原理简单、明了,不受试件形状尺寸和材质的限制,只要能涂刷,就可以 I. Preface The so-called stress coating is a special coating used for stress analysis. Because it is very brittle and is also called a brittle coating in the academic sense, it is applied to the entire test piece and loaded after being dried and hardened. When the stress reaches Above a certain standard, cracks will appear on the coating. These crack groups are generated by intersecting directly with the main stress line on the surface of the object, and the correspondence between the crack pitch and the stress value can be seen. Therefore, if the stress condition of the crack on the paint film is known, then according to the crack pattern, That is to master the stress distribution, which can be predicted dangerous areas. The principle of stress coating is simple, clear, not subject to the shape and material size constraints, as long as brushing can be