Effect of stacking sequence on energy release rate distributions in multidirectional dcb and enf specimens

Davidson, Barry D.; Krüger, R.; König, M.

doi:10.1016/s0013-7944(96)00037-9

Cited by 116 publications

(56 citation statements)

References 16 publications

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“…ANALYSIS OF MULTIDIRECTIONAL DCB SPECIMENS MD laminates usually present elastic couplings which can be the source of significant errors in G Ic measurements [5,10]. For example, bending-bending couplings may generate highly curved thumbnail shaped delamination fronts, while membrane-bending couplings can induce significant contributions of thermal residual stresses to the measured G Ic .…”

Section: Introductionmentioning

confidence: 99%

Mode I interlaminar fracture of carbon/epoxy multidirectional laminates

Pereira

Morais

2004

Composites Science and Technology

140

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Section: Introductionmentioning

confidence: 99%

Mode I interlaminar fracture of carbon/epoxy multidirectional laminates

Pereira

Morais

2004

Composites Science and Technology

140

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“…A 40 lm thick PTFE film is placed at mid-thickness to initiate the delamination. The stacking sequence of each configuration is chosen so that the stiffness of the two arms of the specimen is equal and so that the bending of the arms does not produce torsion, as advised by several papers [14,15]. Each panel is cut using a diamond saw into specimens of length 170 mm and width 20 mm.…”

Section: Materials and Specimen Manufacturementioning

confidence: 99%

Influence of the stacking sequence and crack velocity on fracture toughness of woven composite laminates in mode I

Navarro

Aubry

Pascal

et al. 2014

Engineering Fracture Mechanics

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a b s t r a c tWoven composites are well-known for their good transverse properties and for their high fracture toughness. The damage mechanisms leading to delamination in woven composites are identified in mode I. The influence of several parameters, including the draping sequence and the fiber/matrix interface on the fracture toughness of woven composite laminates is studied. Pure mode I tests are carried out on several carbon/epoxy and glass/epoxy woven composites configurations and the differences observed are discussed from a fractographic point of view. A novel experimental method is designed to perform dynamic pure mode I tests. The study illustrates the high fracture toughness of the composites made of woven fabrics as well as the influence of the orientation of the plies, the nature of the fibers and the addition of an adhesive film on the fracture toughness in mode I. The dynamic tests prove that, on the configurations tested and for crack velocities up to 100 m/s, the crack propagation velocity has a limited effect on the value of G Ic .

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“…Açılı katlı tabakalı kompozit malzemelerde malzeme salt Mod I veya Mod II yüklemesine maruz kalsa da eğilme-burulma ve burulma-burulma kuvvet çiftlerinin etkisi ile çatlak ucunda hem Mod I hem de Mod II kırılması eş zamanlı olarak ortaya çıkmaktadır [16]. Açılı katlı tabakalı kompozit malzemelerde lif yerleşim açılarının neden olduğu anticlastic eğilme veya asimetrik eğilme ile çatlak ucunun çarpılmasına neden olan karışık mod yüklemeleri nümerik metotlar ile de incelenmiştir [17][18][19][20][21][22][23].…”

Section: Introductionunclassified

Karbon Lifi/Epoksi Tabakalı Kompozit Malzemelerin Farklı Ortam Şartlarındaki Mod I Kırılma Davranışı

Darıcık¹,

Çelebi²

2017

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖzTabakalar arası çatlak ve kırılma, tabakalı kompozit malzemelerde çokça karşılaşılan bir hasar türüdür. Ayrılma modu tabakalar arası kırılmanın en kolay gerçekleştiği ve tabakalar arası kırılma tokluğunun en düşük olduğu kırılma modudur. Mode I Interlaminar Fracture Behaviour of Carbon/Epoxy Laminated Composites under Different Temperatures AbstractInterlaminar fracture of a laminated composite material is the damage resistance of the material to cracks located at interface. Mode I interlaminar fracture takes place and damages composites more easily than other modes since it is frictionless. In this study, the effect of ambient temperature to mod I interlaminar fracture toughness of carbon/epoxy laminate was studied. It is found out that if the ambient temperature decreases under 0 o C, Mod I interlaminar fracture toughness decreases also. However fracture behavior doesn't change and R-curve behaviors of laminates are similar under the 23 o C and below. For higher ambient temperatures than 23 o C, it is concluded that glass transition temperature (T g ) of epoxy matrix is key parameter and the crack doesn't propagate if the temperature is close to T g . Fracture characteristics of the laminate are so different under the temperatures higher than T g .

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Effect of stacking sequence on energy release rate distributions in multidirectional dcb and enf specimens

Cited by 116 publications

References 16 publications

Mode I interlaminar fracture of carbon/epoxy multidirectional laminates

Mode I interlaminar fracture of carbon/epoxy multidirectional laminates

Influence of the stacking sequence and crack velocity on fracture toughness of woven composite laminates in mode I

Karbon Lifi/Epoksi Tabakalı Kompozit Malzemelerin Farklı Ortam Şartlarındaki Mod I Kırılma Davranışı

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