An experimental and analytical investigation of the rail shear-test method as applied to composite materials

Garcia, Ricardo Fernandes; Mcwithey, R. R.; Weisshaar, Terrence A.

doi:10.1007/bf02328411

Cited by 32 publications

(7 citation statements)

References 2 publications

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“…The validity of this test was investigated in 1971 by Whitney et al for various geometric configurations and laminate stacking sequences [10], then by other authors (e.g. [11,12]). Their conclusions show a satisfactory large pure shear area and little free-edge effects for most cases, but for certain parameters and especially material properties, they recommend a cautious use of the test, since pure shear is not ensured.…”

Section: Introductionmentioning

confidence: 99%

Reversible Rail Shear Apparatus Applied to the Study of Woven Laminate Shear Behavior

Rouault¹,

Nègre²,

Rauch³

2013

Exp Mech

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The multitude of in-plane shear tests existing in the literature seems to demonstrate the complexity of developing a test adapted to all experimental works. In a general framework of investigation of translaminar cracks in thin laminates, a test able to reproduce a pure in-plane shear loading was required. The laminate studied is notably employed as helicopter blade skin, and cyclic torsion induced by aerodynamic load involves cyclic in-plane shear. This particular application established some specifications for the test needed to carry out this study. To comply with them, an original technological solution has been developed from a three-rail shear test apparatus. This paper describes the resulting "reversible rail shear test" solution and its application to the study of in-plane shear behavior of a thin glass-epoxy laminate. The results concern plain and notched coupons under quasi-static loading, and crack growth tests under cyclic loading.

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Section: Introductionmentioning

confidence: 99%

Reversible Rail Shear Apparatus Applied to the Study of Woven Laminate Shear Behavior

Rouault¹,

Nègre²,

Rauch³

2013

Exp Mech

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“…The rail‐shear test was suggested as a procedure for measuring the in‐plane shear properties of laminated composite materials [3, 12]. Shear stress is applied to plate specimens by gripping large areas of the laminate surface along each side (Figure 2).…”

Section: Different Shear Test Methodsmentioning

confidence: 99%

“…Moreover, an uncomplicated and rapidly executable test is desirable to ensure that material characterisation is possible, resulting in easier application of these advanced materials in design, with reasonable safety margin. With this objective in focus, a study on in‐plane shear test techniques, which can be carried out on laminate flat plates, was made and recent literature studies [1–21] have endeavoured to present comparisons of the popular shear testing and analysis methods.…”

Section: Introductionmentioning

confidence: 99%

Shear Characterisation of Woven Carbon/Epoxy Composite Under Various Adverse Environments

Dash

Singh

2011

Strain

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In this article, an investigation into the shear properties of bi-directional carbon fibre reinforced composite has been carried out by 'rail-shear' test method (D4255). The specimens were tested under various adverse environmental conditions after subjecting them to different durations of exposure. A comparison between time-dependent degradation of the shear properties of the material with respect to virgin shear properties is made, and the results have been analysed with emphasis on material weight gain or loss under those adverse environments.

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“…R. Garcia, et al, [9] Konrad Gliesche, et al, [11] studied shear properties of carbon/epoxy composites with with loading, but they were stationary along the specimen surfaces and there was stating that also the reinforcement structure effect this inhomogeneity. In some papers, on model specimens such inhomogeneity was investigated, in the residual interlaminar deformations was proposed to measure to the cooled down state of CRF epoxy composite with a micro -moiré interferometer.…”

Section: List Of Figuresmentioning

confidence: 99%

Characterization of In-Plane Shear Properties of Laminated Composites at High Strain Rates

Raju

Dandayudhapani

Thorbole³

2008

Journal of Aircraft

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the technical details and overcome difficulties. For his valuable help, patience and encouragement, I owe him the deepest gratitude. It's hard to express the thanks towards him in words. I would also like to thank Dr. Bert L. Smith and Dr. Bob Minaie for reviewing my thesis and making valuable suggestions. Most of my experiments would not have been possible without help from NIAR laboratories. I owe the deepest appreciation to my colleagues Anand Deshpande, Vivek Mariyanna, Sandeep Shetty, Juan Acosta Felipe, Manoj Varma, and Mohan Ghimire and engineers from the National Institute for Aviation Research, especially to Kim Leng Poon and Siddartha Arood for their kind assistance in carrying out experiments and helping with various applications. I am indebted to my many colleagues and friends for providing a stimulating and fun environment to learn and grow. I wish to thank my best friends from Wichita State University; Kumar Nijagal, Ashwin Sheshadri and Divakara Basavaraju for helping me to get through difficult times and for their emotional support, entertainment and caring. Lastly and most importantly, I want to thank my parents who have been a source of encouragement and inspiration throughout my life. Finally, I would like to thank all the direct and indirect supports that helped me complete this thesis.

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An experimental and analytical investigation of the rail shear-test method as applied to composite materials

Cited by 32 publications

References 2 publications

Reversible Rail Shear Apparatus Applied to the Study of Woven Laminate Shear Behavior

Reversible Rail Shear Apparatus Applied to the Study of Woven Laminate Shear Behavior

Shear Characterisation of Woven Carbon/Epoxy Composite Under Various Adverse Environments

Characterization of In-Plane Shear Properties of Laminated Composites at High Strain Rates

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