Örgülü Cam Elyaf Takviyeli Polimer Kompozitlerin Tabaka Diziliminin ve Genişliklerinin SERR Üzerindeki Etkileri

Year 2019, Volume: 21 Issue: 62, 369 - 378, 21.05.2019

M.evren Toygar Farshid Khosravi Maleki

https://doi.org/10.21205/deufmd.2019216205

Abstract

Bu
çalışmada, Mod I çatlak ilerlemesi altında örgülü cam elyaf takviyeli polimer
(GFRP) kompozitlerinin kırılma davranışı deneysel olarak araştırılmış ve tabaka
diziliminin ve numune genişliklerinin delaminasyon direncine olan etkilerini
belirlemek için sayısal olarak modellenmiştir. Açığa çıkan şekil değiştirme
enerjisinin (SERR) hesaplanması için farklı yöntemler kullanılmıştır: deneysel çözüm için, deneysel uyum kalibrasyon yöntemi (CCM), modifiye
edilmiş kiriş teorisi (MBT), modifiye uyum kalibrasyon yöntemi (MCC)
kullanılmıştır ve sayısal çözüm için sanal çatlak kapatma tekniği (VCCT)
kullanılmıştır. DCB test numuneleri, SERR değerlerini elde etmek için kullanılmıştır.
Delaminasyon, çatlak analizi ve Mod I SERR değerilerinin VCCT tarafından
hesaplanması için üç boyutlu sonlu eleman modeli kullanılmıştır. Deneysel ve
sayısal sonuçların  birbiriyle uyumlu
olduğu ve böylece bir örgülü cam elyaf takviyeli polimer kompozitlerin SERR
değerini analiz etmek için VCCT metodunun uygun bir yöntem olduğu görülmüştür.

Keywords

Polimer kompozitler, kırılma tokluğu, DCB testi, Sanal çatlak kapatma tekniği (VCCT)

Effects Of Lay-Up Sequence and Widths on The SERR of Woven Glass Fiber Reinforced Polymer Composites

Abstract

In this paper, fracture
behavior of woven Glass Fiber Reinforced Polymer (GFRP) composites under Mode I
crack growth was experimentally investigated and numerically modelled, to
determine the effects of lay-up sequence and widths on delamination resistance.
Different methods are used for calculation of strain energy release rate
(SERR): for experimental solution, experimental compliance calibration method
(CCM), modified beam theory (MBT), modified compliance calibration (MCC) are
used and virtual crack closure technique (VCCT) are used for numerical solution.
To achieve this aim DCB (double cantilever beam) test specimens are used to
evaluate the SERR values. Three dimensional finite element model is used to
perform the delamination, crack analysis, and Mode I SERR value is calculated
by the VCCT. It is seen that there is an agreement between experimental and
numerical results so that VCCT method is to be an appropriate method for
analyzing a SERR value of woven glass fiber reinforced polimer composites.

Keywords

Polymer composites, Fracture toughness, DCB test, Virtual crack closure technique (VCCT)

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