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The influence of defects on the static mechanical properties of composite materials

Başlık çevirisi mevcut değil.

  1. Tez No: 401907
  2. Yazar: GÖKTUĞ KARA
  3. Danışmanlar: DR. ARTHUR WILKINSON
  4. Tez Türü: Yüksek Lisans
  5. Konular: Fizik ve Fizik Mühendisliği, Kimya Mühendisliği, Physics and Physics Engineering, Chemical Engineering
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2011
  8. Dil: İngilizce
  9. Üniversite: The University of Manchester
  10. Enstitü: Yurtdışı Enstitü
  11. Ana Bilim Dalı: Fizik Mühendisliği Ana Bilim Dalı
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: 78

Özet

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Özet (Çeviri)

Carbon fibre reinforced polymers (CFRP) have been finding a wide range of applications in the industry due to their high specific strength and stiffness properties. However, they suffer from delaminations caused by low velocity impact during service and manufacturing damage. Since composite structures are required to retain integrity after get damaged, it is important to determine their residual strength values. Therefore, the effects of delaminations of different size, depth, shape and quantity on the compressive strength of composites were investigated in this study. Release films were used as representations of impact damage to produce delaminations. These delaminations were detected by using different non destructive techniques. Compression tests were conducted to find out the residual compressive strengths of test panels and compared to the results obtained from previous studies. The results were found to be consistent with previous studies. Compression test results showed that delaminations cause a considerable reduction in the compressive strength of composites. Circular delaminations were seen to affect the residual strength more than diamond or square shaped delaminations. Moreover, the compressive strength was found to decrease with increasing delamination size. It was concluded that as the through thickness position of delaminations increases, the compressive strength initially decreases and then increases. Finally, multiple delaminations were shown to reduce the compressive strength more than single delaminations.

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