首页>
外国专利>
Air-Coupled Acoustic Thermography for In-Situ Evaluation
Air-Coupled Acoustic Thermography for In-Situ Evaluation
展开▼
机译:空气耦合声热成像技术进行原位评估
展开▼
页面导航
摘要
著录项
相似文献
摘要
Acoustic thermography uses a housing configured for thermal, acoustic and infrared radiation shielding. For in-situ applications, the housing has an open side adapted to be sealingly coupled to a surface region of a structure such that an enclosed chamber filled with air is defined. One or more acoustic sources are positioned to direct acoustic waves through the air in the enclosed chamber and towards the surface region. To activate and control each acoustic source, a pulsed signal is applied thereto. An infrared imager focused on the surface region detects a thermal image of the surface region. A data capture device records the thermal image in synchronicity with each pulse of the pulsed signal such that a time series of thermal images is generated. For enhanced sensitivity and/or repeatability, sound and/or vibrations at the surface region can be used in feedback control of the pulsed signal applied to the acoustic sources.
展开▼