Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5016857 | International Journal of Pressure Vessels and Piping | 2017 | 6 Pages |
Abstract
Defect images in a plate can be obtained by the generation and detection of flexural elastic waves using a pulsed laser and a laser Doppler vibrometer. The author has developed an experimental system-called an E-camera-that establishes extremely fast imaging. This paper describes the application of the E-camera to imaging of pipe thinning. The first experiments using a straight pipe revealed that resonance patterns appear significantly at certain frequencies due to guided waves propagating both in the longitudinal and circumferential directions, which is a unique characteristic of pipe structures. A pipe thinning located at various circumferential positions could also be visualized appropriately. Moreover, pipe thinning was successfully detected in both straight and branch pipes located at a distance of 6.0Â m from the E-camera system.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Takahiro Hayashi,