Characterization and Failure Analysis of Plastics
Ultrasonic Nondestructive Analysis of Plastics
Of the many different nondestructive evaluation (NDE) techniques, ultrasonic inspection continues to be the leading nondestructive method for inspecting composite materials, because measurements can be quantitative and the typical defect geometries and orientations lend themselves to detection and characterization. This article focuses on the three common methods for ultrasonic nondestructive inspection of plastics, namely pitch-catch, through-transmission, and pulse-echo, as well as the three basic types of ultrasonic NDE scans: the A-scan, B-scan, and C-scan. The discussion includes the linear and phased array systems that are sometimes used for large-scale inspection tasks to reduce scan times, the various gating and image processing techniques, and how ultrasonic data are interpreted and presented. A brief section on future trends in ultrasonic inspection is presented at the end of the article.
Paul Kulowitch, Ultrasonic Nondestructive Analysis of Plastics, Characterization and Failure Analysis of Plastics, Vol 11B, ASM Handbook, Edited By Todd J. Menna, ASM International, 2022, p 521–532, https://doi.org/10.31399/asm.hb.v11B.a0006936
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