一、前言许多工程结构材料都是在复杂的随机动载荷下工作。为了对这些工作结构材料的使用寿命和可靠性进行分析,同时为这些工程结构的设计提供基础数据,首先必须进行载荷-时间历程的测定和数据处理。目前,进行载荷测定的常规方法是通过电阻应变仪实测,并用光线示波器或磁带记录器进行记录。然后通过人工统计分析或由磁带记录器再现,用计算机进行分 I. INTRODUCTION Many engineering structural materials are working under complex random dynamic loads. In order to analyze the service life and reliability of these working structural materials and to provide basic data for the design of these engineering structures, load-time history measurements and data processing must first be carried out. At present, the conventional method of carrying out load measurement is actually measured by a resistance strain gauge and recorded with a light ray oscilloscope or a tape recorder. And then by manual statistical analysis or by tape recorder to reproduce, the computer points