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A Study on Acoustic Emission Characteristics of CFRP in aircraft operations  

Lee, Kyung-Won (한국항공대학교 대학원 항공우주 및 기계공학과)
An, Ju-Seon (한국항공대학교 대학원 항공우주 및 기계공학과)
Hwang, Woong-Gi (한국항공대학교 대학원 항공우주 및 기계공학과)
Lee, Jong-Oh (한국기계연구원 부설 재료연구소)
Lee, Sang-Yul (한국항공대학교 항공재료공학과)
Lee, Bo-Young (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aviation and Aeronautics / v.18, no.4, 2010 , pp. 59-66 More about this Journal
Abstract
Aerospace structures need high stability and long life because many personal injuries can result from an accident and securing structural integrity for various external environments is more important than any other thing. So first of all we must prove the destruction properties for operating environment, have prediction technology about damage evolution and life, and develop an economical non-destructive technology capable of detecting structure damage. Acoustic emission (AE) have no need of artificial environment like ultrasonic inspection or radio fluoroscopy to emit a certain energy, is a testing technique using seismic signal resulting from interior changes of solids, and enables to observe if any fault is appeared and it grows seriously or not while running. In this study we suggest the method of structural integrity evaluation for aerospace structures through the acoustic emission technique, for which a model plane was manufactured and an actual operation test was conducted.
Keywords
Acoustic Emission(AE); Carbon Fiber Reinforced Plastic(CFRP); Actual Operation; Waveform;
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