Reflective fringe pattern technique for subsurface crack detection
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 602-610 |
| Journal / Publication | NDT and E International |
| Volume | 41 |
| Issue number | 8 |
| Publication status | Published - Dec 2008 |
Link(s)
Abstract
This paper presents a novel optical technique, reflective fringe pattern (RFP), for non-destructive testing (NDT) of objects having specularly or semi-specularly reflective surfaces. The principles are based on measuring the surface deformation of a test object and identifying deformation anomalies caused by subsurface flaws. RFP is not based on optical interference and therefore, it is not subjected to the severe limitations of interferometry. Compared with the conventional methods of NDT techniques, RFP measures the response of a flaw to applied stresses, and hence it provides more direct information about the flaw criticality. In this paper, experimental demonstrations of the present technique to subsurface crack detection are presented. Two software-based methods are also adopted to enhance the flaw visibility on the output of RFP. © 2008 Elsevier Ltd. All rights reserved.
Research Area(s)
- Flaw visibility enhancement, Non-destructive evaluation, Non-destructive testing, Reflective fringe pattern, Subsurface flaw detection
Citation Format(s)
Reflective fringe pattern technique for subsurface crack detection. / Chan, Fiona W.Y.
In: NDT and E International, Vol. 41, No. 8, 12.2008, p. 602-610.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
