Nondestructive ultrasonic determination of disbonds in adhesively bonded submarine shaft vibration reducers

Narendra K. Batra; K. E. Simmonds; Henry H. Chaskelis

doi:10.1117/12.212551

19 June 1995 Nondestructive ultrasonic determination of disbonds in adhesively bonded submarine shaft vibration reducers

Narendra K. Batra, K. E. Simmonds, Henry H. Chaskelis

Author Affiliations +

Proceedings Volume 2459, Nondestructive Evaluation of Aging Maritime Applications; (1995) https://doi.org/10.1117/12.212551
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

Good adhesive bond between the laminates is extremely important for the shear strength of adhesively bonded poly-rubber-steel concetric cylinders used as marine shaft vibration reducers (SVR). The SVR are inspected nondestructively by using a high-speed PC-based transmission ultrasonic C-scan system capable of scanning and producing images. Transmission of ultrasound at frequencies between 5-20 MHz and time-of-flight variations of these signals through these multilayered structures is used to determine the disbonds at the interfaces. Two- and three-dimensional images are generated and analyzed statistically to quantify the areas of disbond. Mathematical models for the propagation of ultrasound through such a layered structure are applied for the interpretation of these images.

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Narendra K. Batra, K. E. Simmonds, and Henry H. Chaskelis "Nondestructive ultrasonic determination of disbonds in adhesively bonded submarine shaft vibration reducers", Proc. SPIE 2459, Nondestructive Evaluation of Aging Maritime Applications, (19 June 1995); https://doi.org/10.1117/12.212551

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