RIA: Analytical and Experimental Modeling of Acoustic Emission Signals

RIA：声发射信号的分析和实验建模

• 批准号: 9111339
• 负责人: Laurence Jacobs
• 金额: $ 8.49万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-15 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9111339&HistoricalAwards=false
• 关键词: RIA; Analytical; Experimental; Modeling; Acoustic

A Research Initiation Award will fund a study of advanced nondestructive testing of structural materials by acoustic emission. A combination of model development and experimental validation will be used. The model will use an acoustic signal source which is an actual crack propagation and arrest event and which includes crack location and orientation, crack tip velocity and duration of propagation, component geometry, and mode of fracture. The dynamic stresses will be calculated at each point by the integral method. From the stresses the local dynamic displacements will be calculated and used to determine the expected acoustic emission signal waveform.

研究启动奖将资助一项先进的研究， 结构材料声学无损检验 排气中 模型开发和实验相结合 将使用验证。 这个模型将使用一个声音信号 其是实际裂纹扩展和止裂事件， 包括裂纹位置和方向、裂纹尖端速度 传播的持续时间，组件的几何形状和模式， 骨折 将计算每个点的动态应力 积分方法。 从当地的应力动态来看 位移将被计算并用于确定预期的 声发射信号波形