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Composite Patch Repair Design on Damaged Composite Rotating Pressurized Cross Section Based on Axiomatic Design Method

Alizadeh, Abed | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52585 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Abedian, Ali
  7. Abstract:
  8. Nowadays, composite pressure vessels are used in different industries that are deal with high pressure technologies such as aerospace, petroleum, gas and petrochemical. Composite pressure vessels structural health is checked in specified time duration with respect to standard processes. If vessels structure is damaged, its condition should reconciling with standards. If the damage is repairable, composite pressure vessel will repair, else it should be replaced. The companies repair these types of damages only in several outer layers of vessel. If the damage is deeper than a specific value, it is unusable. The purpose of this thesis is composite patch repair design on damaged composite rotating pressurized cross section based on axiomatic design method that recovers performance of vessel in minimum time and cost. In this study, a composite pressure vessel is designed as a cylinder in finite element method and scarf and wrap repair is implement on it based on the parameters that obtained from axiomatic design. In continues, the effect of each parameters such as scarf angle, length and thickness of wrap repair on repair quality is study. At the end, the optimum quantity of each design parameters is obtained from finite element method and determine that designed repair is able to recover 63 present of former performance of composite pressure vessel
  9. Keywords:
  10. Composite ; Axiomatic Design ; Pressure Vessel ; Composite Patch Repair ; Scarf Repair ; Wrap Repair

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