发明名称 Methods and apparatus for porosity measurement
摘要 A method for non-destructively inspecting a composite structure with a single ultrasonic transducer includes determining a calibration amplitude of ultrasonic transmissions emitted by the single ultrasonic transducer to a reflector in a fluid-filled immersion tank and received back at the single ultrasonic transducer. The method also includes inserting the composite structure into the fluid-filled immersion tank between the reflector and the single ultrasonic transducer. In addition, the method includes scanning the composite structure with the single ultrasonic transducer to measure ultrasonic amplitudes for sound waves traveling through the composite structure, reflecting off the reflector plate and then traveling back through the structure to the single ultrasonic transducer. The measured ultrasonic amplitudes are corrected using the calibration amplitude and other measured transmission losses, and the corrected ultrasonic amplitudes are utilized to generate either or both a digital image showing porosity or a measurement of porosity of the composite structure.
申请公布号 US2007186655(A1) 申请公布日期 2007.08.16
申请号 US20060355217 申请日期 2006.02.15
申请人 GENERAL ELECTRIC COMPANY 发明人 REED FRANCIS A.;BATZINGER THOMAS J.
分类号 G01N29/04 主分类号 G01N29/04
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