Mode III Delamination Using a Split Cantilever Beam

Sharif, Farhad; Kortschot, MT; Martin, Roderick

doi:10.1520/stp14009s

Cited by 34 publications

(47 citation statements)

References 20 publications

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“…[126]. Two forces are applied directly to each crack arm of the SCB specimen, as illustrated in Fig.…”

Section: Fracture Studiesmentioning

confidence: 99%

Fracture in Composites - An Overview (Part I)

Rizov¹

2012

Journal of Theoretical and Applied Mechanics

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Abstract. An overview of the literature for the last twenty years on the fracture mechanics of unidirectional fibre reinforced polymer composites is presented. Pure mode (I, II, and III) as well as mixed mode longitudinal cracks (i.e., cracks that prolongate along the fibres) are considered mainly. It is shown that the strain energy released rate is the most widely used parameter for fracture toughness characterization. Various solutions for determination of the strain energy release rate in composites using linear-elastic fracture mechanics are presented. Studies on fracture in composite sandwich structures are reviewed, too. Some analyses of damages and their influence on fracture behaviour also are considered. Topical problems of composite fracture mechanics are formulated.

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“…[126]. Two forces are applied directly to each crack arm of the SCB specimen, as illustrated in Fig.…”

Section: Fracture Studiesmentioning

confidence: 99%

Fracture in Composites - An Overview (Part I)

Rizov¹

2012

Journal of Theoretical and Applied Mechanics

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“…Robinson and Song [6] tried to limit the bending moment by introducing additional constraints, but they concluded that the experimental Compliance Calibration (CC) method could no longer be applied in the data reduction schema. Another modified version of SCB configuration (MSCB) was then realized by Sharif et al [7], whose specimen was loaded by special grips and the mode II component was significantly reduced. The data reduction method based on an improved beam theory was found to be more reliable than the CC method [8].…”

Section: Introductionmentioning

confidence: 99%

Test methods for measuring pure mode III delamination toughness of composite

Gong

Hurez

et al. 2016

Polymer Testing

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International audienceThis paper focuses on the characterization of pure mode III delamination behavior of composite materials. The development for pure mode III delamination testing methods is reviewed. Two testing methods for mode III experiments were evaluated: a novel test proposed in our previous study, termed Edge Ring Crack Torsion (ERCT) test, and the widely used Edge Crack Torsion (ECT) test. The two methods were compared by experiment and finite element analysis. The results demonstrate the advantage of ERCT. The limitations of the ECT test are discussed. (C) 2016 Elsevier Ltd. All rights reserved

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“…However, Martin [22] has shown that a significant amount of mode II is present in this specimen. Modified versions of the SCB test are able to eliminate some of the mode II component [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the object of this study is to investigate the mode III fracture properties of glass fiber reinforced polymer woven laminates at low temperatures. For this purpose, a modification of the SCB specimen is used as proposed in [24]. A special loading rig is implemented in order to eliminate the bending moment at the delamination front.…”

Section: Introductionmentioning

confidence: 99%

Mode III Interlaminar Fracture Behavior of Glass Fiber Reinforced Polymer Woven Laminates at 293 to 4 K

et al. 2006

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This paper deals with mode III delamination properties of glass fiber reinforced polymer woven laminates at room temperature (293 K), liquid nitrogen temperature (77 K), gas helium temperature (20 K), and liquid helium temperature (4 K). In order to evaluate these properties, the Split Cantilever Beam (SCB) fracture test is performed. The load is applied to a test specimen through a set of identical grips in order to reduce (in some degree) the mode II loading at the free edges. A three-dimensional finite element analysis is used to study the stress and strain state of the specimens and to interpret the experimental measurements. The strain energy release rate is calculated by using the virtual crack closure technique. It is found that the strain energy release rate is dominated by the mode III component. A non-uniform distribution of the strain energy release rate along the delamination front is obtained with mode III component having maximum at the center of the delamination front, while mode II component increases towards the free edges. The strain energy release rate is also determined using the crack closure technique. A finite element analysis is also carried out to calculate the stress intensity factors for the SCB specimens. The fracture surfaces are examined by scanning electron microscopy to identify the fracture mechanisms. The most important conclusion from the present study is that at temperature lowering from 293 to 20 K the mode III fracture toughness increases, further cooling to 4 K produces a toughness decrease.

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Mode III Delamination Using a Split Cantilever Beam

Cited by 34 publications

References 20 publications

Fracture in Composites - An Overview (Part I)

Fracture in Composites - An Overview (Part I)

Test methods for measuring pure mode III delamination toughness of composite

Mode III Interlaminar Fracture Behavior of Glass Fiber Reinforced Polymer Woven Laminates at 293 to 4 K

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