A principal component analysis of acoustic emission signals from a landing gear component

Pullin, R. and Eaton, M. J. and Hensman, J. J. and Holford, K. M. and Worden, K. and Evans, S. L. (2008) A principal component analysis of acoustic emission signals from a landing gear component. Applied Mechanics and Materials, 13-14. pp. 41-47. ISSN 1660-9336

Full text not available from this repository.

Abstract

This work forms part of a larger investigation into fracture detection using acoustic emission (AE) during landing gear airworthiness testing. It focuses on the use of principal component analysis (PCA) to differentiate between fracture signals and high levels of background noise. An artificial acoustic emission (AE) fracture source was developed and additionally five sources were used to generate differing AE signals. Signals were recorded from all six artificial sources in a real landing gear component subject to no load. Further to this, artificial fracture signals were recorded in the same component under airworthiness test load conditions. Principal component analysis (PCA) was used to automatically differentiate between AE signals from different source types. Furthermore, successful separation of artificial fracture signals from a very high level of background noise was achieved. The presence of a load was observed to affect the ultrasonic propagation of AE signals.

Item Type:
Journal Article
Journal or Publication Title:
Applied Mechanics and Materials
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200
Subjects:
ID Code:
84268
Deposited By:
Deposited On:
24 Jan 2017 16:20
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Mar 2020 05:21