ISSN:
1662-7482
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This work forms part of a larger investigation into fracture detection using acousticemission (AE) during landing gear airworthiness testing. It focuses on the use of principalcomponent analysis (PCA) to differentiate between fracture signals and high levels of backgroundnoise. An artificial acoustic emission (AE) fracture source was developed and additionally fivesources were used to generate differing AE signals. Signals were recorded from all six artificialsources in a real landing gear component subject to no load. Further to this, artificial fracture signalswere recorded in the same component under airworthiness test load conditions. Principal componentanalysis (PCA) was used to automatically differentiate between AE signals from different sourcetypes. Furthermore, successful separation of artificial fracture signals from a very high level ofbackground noise was achieved. The presence of a load was observed to affect the ultrasonicpropagation of AE signals
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/38/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.13-14.41.pdf
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