Impulse Excitation Apparatus for Anisotropic Material Characterization

用于各向异性材料表征的脉冲激励装置

• 批准号: 9732761
• 负责人: Paul Heyliger
• 金额: $ 2.7万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9732761&HistoricalAwards=false
• 关键词: Impulse; Excitation; Apparatus; Anisotropic; Material

9732761 Heyliger An experimental device is acquired to detect resonant modes of unrestrained free vibration of solid objects with anisotropic properties using impulse excitation.Such modes are difficult to detect using more traditional acoustic spectroscopy techniques, particulary for specific geometries of the solid. Combining the measurements with numerical calculations and an inverse scheme, a powerful method is developed to determine material properties of materials with unknown constitution. The apparatus is also used for nondestructive evaluation of transportation structures and classroom demonstration of principles in dynamics and vibration. ***

9732761 Heyliger获得了一种实验装置，用于使用脉冲激励来检测具有各向异性特性的固体物体的无约束自由振动的共振模式。这些模式很难使用更传统的声学光谱技术来检测，特别是对于特定几何形状的固体。将测量结果与数值计算和逆方案相结合，开发了一种强有力的方法来确定未知成分材料的材料性能。该仪器还用于运输结构的无损评估和动力学和振动原理的课堂演示。 ***