THERMOGRAPHIC INSPECTION FOR NEAR-SURFACE INCONSISTENCIES OF COMPOSITE STRUCTURES

To provide methods pertaining to thermographic inspection of composite surfaces, including non-parallel or rough surfaces, for near-surface inconsistencies.SOLUTION: Signals are sent into a first surface 404 of a structure 406 using an ultrasonic transducer 412. Ultrasound response signals are recei...

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Bibliographische Detailangaben
Hauptverfasser:	GARY E GEORGESON, JEFFREY G THOMPSON, TAT HONG HUE, WILLIAM JOSEPH TAPIA, MARTIN L FREET, BARRY ALLEN FETZER
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	To provide methods pertaining to thermographic inspection of composite surfaces, including non-parallel or rough surfaces, for near-surface inconsistencies.SOLUTION: Signals are sent into a first surface 404 of a structure 406 using an ultrasonic transducer 412. Ultrasound response signals are received at the ultrasonic transducer. A portion of a second surface 410 of the structure is heated while the ultrasonic transducer is sending signals into the first surface, where the second surface is on an opposite side of the structure from the first surface. Infrared images of the portion of the second surface of the structure are taken after heating the second surface.SELECTED DRAWING: Figure 4 【課題】表面付近不具合（むら、不均一性，ｉｎｃｏｎｓｉｓｔｅｎｃｙ）について、非平行であったり粗かったりする表面を含む複合表面のサーモグラフィ検査に関する方法を提供する。【解決手段】超音波トランスデューサ４１２を用いて、構造体４０６の第一表面４０４内に信号を送信する。超音波トランスデューサにおいて超音波応答信号を受信する。超音波トランスデューサが第一表面内に信号を送信している間に構造体の第二表面４１０の部分を加熱するが、第二表面は構造体の第一表面の反対側にある。第二表面を加熱した後に、構造体の第二表面の部分の赤外線画像を撮る。【選択図】図４