Role of varying interface conditions on the eddy current response from cracks in multilayer structures
Abstract
There is a need to improve the understanding of the role of interface conditions on eddy current inspections for cracks in multilayer aircraft structures. This paper presents initial experimental and simulated results studying the influence of gaps and contact conditions between two plates with a notch in the second layer. Simulations show an amplification of the eddy current signal for a subsurface notch adjacent to an air gap as opposed to a submerged notch in a solid plate.
- Publication:
-
Review of Progress in Quantitative Nondestructive Evaluation: Volume 32
- Pub Date:
- January 2013
- DOI:
- 10.1063/1.4789083
- Bibcode:
- 2013AIPC.1511..456C
- Keywords:
-
- aerospace components;
- cracks;
- eddy current testing;
- inspection;
- mechanical contact;
- multilayers;
- notch testing;
- plates (structures);
- 62.20.mt;
- 81.40.Np;
- 81.70.Bt;
- 81.70.Ex;
- 89.20.Kk;
- Cracks;
- Fatigue corrosion fatigue embrittlement cracking fracture and failure;
- Mechanical testing impact tests static and dynamic loads;
- Nondestructive testing: electromagnetic testing eddy-current testing;
- Engineering