Study of an opto-ultrasonic technique for cure monitoring

Andrew Davis; Myo Myint Ohn; Kexing Liu; Raymond M. Measures

doi:10.1117/12.50185

1 December 1991 Study of an opto-ultrasonic technique for cure monitoring

Andrew Davis, Myo Myint Ohn, Kexing Liu, Raymond M. Measures

Proceedings Volume 1588, Fiber Optic Smart Structures and Skins IV; (1991) https://doi.org/10.1117/12.50185
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

This paper will report on efforts directed toward the generation and detection of ultrasonic waves using optical fibers for the purpose of ultrasonic velocity determination. Interferometric optical fiber sensors are embedded within or bonded to the samples. Two different techniques, laser generated ultrasound and piezoelectric ultrasonics, were used in the study of pulse delay measurements in aluminum and in a room temperature cured epoxy. Group velocity in an aluminum sample and in a cured epoxy sample was determined with both techniques. The application of these two methods to epoxy cure monitoring is discussed.

Citation Download Citation

Andrew Davis, Myo Myint Ohn, Kexing Liu, and Raymond M. Measures "Study of an opto-ultrasonic technique for cure monitoring", Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); https://doi.org/10.1117/12.50185

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