基于柔度法的裂纹扩展动态数据采集系统的研究  

Research on the Data Collection System of A Dy namically Growing Crack Based on the Method of Flexibility

作　　者：鲁四平[1] 方钦志[1] 

机构地区：[1]郑州机械研究所,河南郑州450052

出　　处：《成组技术与生产现代化》2002年第1期22-24,32,共4页Group Technology & Production Modernization

基　　金：国家自然科学基金资助项目(59375192)

摘　　要：摘要:在柔度法测量裂纹扩展系统研究中根据要求,以PC机为核心,为其设计了专用的数据采集卡,采集实验数据达到了满意的效果。本文较为详细的介绍了利用AD7874模数转换器,在ISA接口规范的基础上,设计该采集系统的过程及整个系统的工作情况。According to the demand of the measurement system of the fatigue crack,this article introduces an automatic collection datamethod by the design of data card based on the use of AD7874 and ISA bus. The whole system can do the work properly on the principle that the flexibility of the object will change once the length of the crack on it' s surface has modified. This technology has bean used on some met al s crack growth successfully.

关 键 词：柔度法 裂纹扩展 动态数据采集系统 放大器 模数转换器 ISA总线接口 

分 类 号：O346[理学—固体力学] TP274.2[理学—力学]