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Pim bağlantılı e-glass/epoxsi kompozit plakalarda tabaka dizilişlerinin hasar davranışına etkisi

Bu çalışmada, pim bağlantısı yapılmış kompozitlerin tabaka dizilişlerinin hasar davranışına etkisi incelenmiştir. Tabakalı kompozit plakalar epoksi matris ve takviye elemanı olarak cam liflerinden üretilmiştir. Bağlantı geometrisinin ve tabaka dizilişinin hasar oluşumu üzerine etkilerini gözlemlemek için hasar analizi deneysel olarak yapılmıştır. Dokuz farklı tabakalı kompozit plaka test edilmiştir. Deney numunelerinin serbest ucunun delik çapına oranı (E/D), 1’den 6’ya kadar farklı boyutlarda tasarlanmıştır. Bunun yanı sıra, numune genişliğinin delik çapına oranı (W/D), tüm numunelerde 6 olarak hazırlanmıştır. Deney sonuçları, kompozit numunelerin hazırlanmasındaki boyut değişkenleri ve tabaka dizilişlerinin hasar davranışını önemli bir biçimde etkilediğini göstermiştir.

Effect of stacking sequences on failure behavior of pinned E-Glass/epoxy composite plates

In this study, the effect of stacking sequences on failure behavior of pinned composite plates was investigated. The laminated composite plates were made from epoxy matrix and glass fibers as reinforcement material. To observe the influences of joint geometry and stacking sequence on the failure mechanism, failure analysis were carried out experimentally. The nine different laminated composite plates were tested. The edge distance-to-hole diameter ratio (E/D) of specimens was designed from 1 to 6. Besides, the specimen width-to-hole diameter ratio (W/D) was only considered as 6. Experimental results point out that failure behavior is strictly influenced from both stacking sequences and geometrical parameters of composite specimens.

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1. Wu, T. J. and Hahn, H. T. The bearing strength of eglass/ vinyl-ester composites fabricated by vartm, Composites Science and Technology, 1997; 58, 1519-1529.
2. Scalea, F. L. D., Cappello, F. and Cloud, G. L. On the elastic behavior of a cross-ply composite pin-joint with clearance fits, Journal of Thermoplastic Composite Materials, 1999; 12, 13-22.
3. Pierron, F. Cerisier, F. and Grediac, M. A numerical and experimental study of woven composite pin-joints, Journal of Composite Materials, 2000; 34, 1028-1054.
4. İçten, B. M. and Sayman, O. Failure analysis of pinloaded aluminum-glass-epoxy sandwich composite plates, Composites Science and Technology, 2003; 63, 727-737.
5. Okutan, B. The effects of geometric parameters on the failure strength for pin-loaded multi-directional fiberglass reinforced epoxy laminate, Composites Part B: Engineering, 2002; 33, 567-578.
6. Caprino, G., Squillace, A., Giorleo, G., Nele L. and Rossi, L. Pin and bolt bearing strength of fibreglass/aluminium laminates, Composites Part A: Applied Science and Manufacturing, 2005; 36: 1307- 1315
7. Meola, C., Squillace, A., Giorleo, G. and Nele, L. Experimental characterization of an innovative Glare fiber reinforced metal laminate in pin bearing, Journal of Composite Materials, 2003; 37: 1543-1552.
8. Yılmaz, T., Sinmazcelik, T. Geometric parameters and chemical corrosion effects on bearing strength of polyphenylenesulphide (PPS) composites, Materials and Design, 2007; 28: 1695-1698.
9. Liu, D., Raju, B. B. and You, J. Thickness effects on pinned joints for composites, Journal of Composite Materials, 1999; 33: 2- 21.
10. Pakdil, M., Sen, F., Sayman, O. and Benli, S. The effect of preload on failure response of glass-epoxy laminated composite bolted-joints with clearance, Journal of Reinforced Plastics and Composites, 2007; 26, 1239- 1252.
11. Jones, R. M. Mechanics of Composite Material. Philadelphia: Taylor & Francis, 1999.
12. Gibson R. F. Principals of Composite Material Mechanics. McGraw-Hill, 1994.
13. Mallick, P. K. Fiber-reinforced composites materials, manufacturing, and design, Second Edition, Marcel Decker, 1993.
14. Reddy, J. N. Mechanics of Laminated Composite Plates Theory and Analysis. CRC Press, 1997.