发明名称 Processing waveform-based NDE
摘要 A computer implemented process for simultaneously measuring the velocity of terahertz electromagnetic radiation in a dielectric material sample without prior knowledge of the thickness of the sample and for measuring the thickness of a material sample using terahertz electromagnetic radiation in a material sample without prior knowledge of the velocity of the terahertz electromagnetic radiation in the sample is disclosed and claimed. Utilizing interactive software the process evaluates, in a plurality of locations, the sample for microstructural variations and for thickness variations and maps the microstructural and thickness variations by location. A thin sheet of dielectric material may be used on top of the sample to create a dielectric mismatch. The approximate focal point of the radiation source (transceiver) is initially determined for good measurements.
申请公布号 US7933027(B1) 申请公布日期 2011.04.26
申请号 US20080326436 申请日期 2008.12.02
申请人 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 发明人 ROTH DONALD J
分类号 G01N21/00;G01B11/28 主分类号 G01N21/00
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