一、前言电阻应变片测量法是我国目前发展得最成熟,使用最为普遍的一种应变测量方法。起重机行业是电测应力分析技术有效应用的领域之一。作者对QY8起重机的应变测量是在现场条件下对样机原型进行的实测。因此它的目的在于给出该机各主要部件的应 I. INTRODUCTION Resistance strain gauge measurement method is the most mature and most commonly used strain measurement method in our country. The crane industry is one of the areas where electrical measurement stress analysis technology is effectively used. The author of the QY8 crane strain measurement is in the field conditions of prototype prototype measurements. Therefore, its purpose is to give the aircraft should be the main components