Descriptions have been given on the application of acoustic emission (AE) in aviation industry. Special attention has been paid to the condition monitoring of aircraft structures and some special problems to be solved. Roles of AE in the evaluation of calendar damage of aircraft are presented and some achievements in this field by using AE technique are also presented. AE technique is of significance in safeguarding air safety. Due to the lack of quatitative appraisal of defect and of the standard and code, its application in aviation is limited to very narrow areas. Traditional AE parameter analysis supplies a rapid, simple and cost-effective means of inspecting and monitoring structure deffect and failure for aviation industry, it however, due to the lack of understanding of AE source mechanism or the failing to grasping the physical essence of AE source, is not able to meet practical demands in many cases. Modal acoustic emission is close to the source mechanism, it however needs more advanced instrument and higher cost, and moreover, it needs large memory space for the instrument and is time consuming. A real time AE instrument for health monitoring of aircraft structure, if is not impossible, is difficult to realize to a great extent. With the help of the combination of modal AE and parameter analysis, AE still can play important role in new aviation material studies, in health monitoring of aircraft structures. The design of calendar damage monitor and detector is attracting more attention at present and it should become a key area to develop.
Application of acoustic emission for aviation industry. Problems and approaches
Anwendung der Schallemission in der Luftfahrtindustrie. Probleme und Methoden
2004
7 Seiten, 6 Bilder, 6 Quellen
(Nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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