首页>
外国专利>
Non-contact thermo-elastic property measurement and imaging system for quantitative nondestructive evaluation of materials
Non-contact thermo-elastic property measurement and imaging system for quantitative nondestructive evaluation of materials
展开▼
机译：用于材料定量无损评估的非接触式热弹性性质测量和成像系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A non-contact thermo-elastic property measurement and imaging system and method thereof are described. Acoustic energy is incident on a first surface of a specimen under test. The acoustic energy is converted partially into heat by the specimen, causing a slight increase in the temperature in a region of interaction. The temperature increase is imaged using a high sensitivity infrared camera. Presence of defects (surface and subsurface) in the material modifies the distribution of temperature. An image of temperature distribution can be used for nondestructive testing and evaluation of materials. The temperature change in the specimen caused by acoustic excitation is related to thermal and elastic properties of the material. A measurement of the change in the temperature as a function of the amplitude of incident excitation can be used for direct measurement of thermo-elastic property of the specimen.
展开▼
