Elastic Interface Waves Along a Fracture: Detection

沿裂缝的弹性界面波：检测

• 批准号: 9021644
• 负责人: Laura Pyrak-Nolte
• 金额: $ 2.94万
• 依托单位: Purdue Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-11-01 至 1992-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9021644&HistoricalAwards=false
• 关键词: Elastic; Interface; Waves; Along; Fracture

The research objective of this grant under the SGER (Small Grants for Exploratory Research) program is to generate and detect elastic interface waves that can propagate along a fracture. The existence of these waves has been predicted theoretically for appropriate mechanical properties of the fracture and frequencies of excitation. Using ultrasonic frequencies, these waves will be generated and measured initially for a synthetic fracture in aluminum, and then in a natural rock specimen. If successful, this research will result in the first observation of elastic interface waves. There is a potential for the development of these waves as diagnostic tools in borehole geophysics and mine safety.

该赠款在SGER下的研究目标（探索性研究的小赠款）是生成和检测可以沿断裂传播的弹性界面波。 从理论上预测了这些波的存在，以实现裂缝和激发频率的适当机械性能。 使用超声波频率，这些波将被生成并最初用于铝中的合成断裂，然后在天然岩石样本中生成。 如果成功，这项研究将导致首次观察弹性界面波。 作为钻孔地球物理学和矿山安全性的诊断工具，有可能开发这些波浪。