Modeling of Principals Structure Elements Deflection and Life Extension of a Wing Structure Using Composite Materials or Shape Memory Alloys

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Ekhlas, Ali | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44733 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Abedian, Ali
Abstract:
One of the main problems in the airline industry is that many aircrafts of today's fleet are approaching their calendaring life, and it is impossible to buy new planes and supply previous ones for most of the companies. Therefore, in order to extend the life of these aged planes, some studies have been performed. The purpose of these studies is to discover the causes of aging and removing them. Repairing, replacement and reinforcing some elements of the structure are important parts of this procedure. This process is called aging. One of the requirements of aging technology is the examination of the structural response to the applied external loads and knowledge of the structural design. After that, principal elements should be found to be repaired or reinforced. In this context, this thesis will attempt to provide new ways to recognize principal elements; without necessity of using advanced equipment, as well as lack of structural design knowledge. This approach makes life extension more possible and increases the reliability of aging. The results of these methods on a Cessna 185 aircraft, as one of the most common aircrafts in Iran fleet, were very convincing
Keywords:
Life Extention ; Aging Aircraft ; Cessna 185 Aircraft ; Finite Element Method ; Substructures

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