Behavior of Fiber-Reinforced Plastic Laminates under Biaxial Loading

Bert, Charles W.; Mayberry, Byron L; Ray, John D.

doi:10.1520/stp49828s

Cited by 11 publications

(3 citation statements)

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“…Metallic material cruciform specimens have previously been studied [13]. An earlier investigation on the behavior of glass fiber woven cloth reinforced epoxy laminates under biaxial tensile loads was carried out by Bert et al [14] using a flat cruciform specimen. The cruciform specimen has widely been applied in biaxial tensile experiments of fiber-reinforced composites [15][16][17].…”

Section: Experimental Cruciform Specimensmentioning

confidence: 99%

Mechanical Properties of Nylon6 Cord-Rubber Composite Subjected to Biaxial Tensile Loads

Zhang

Wan

2002

Journal of Elastomers & Plastics

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Effects of perpendicular tensile loads on the mechanical behavior and biaxial tensile load ratios on stress-strain behaviors of single ply of nylon cord-rubber composite are studied respectively under biaxial tensile conditions employing a cruciform specimen. Experimental results indicate that transverse mechanical properties of nylon cord-rubber composite with longitudinal constant tensile loads are distinct from its uniaxial transverse tensile mechanical properties. This can be attributed to the action of longitudinal tension that makes the material rigidify in the direction perpendicular to the fiber. The mode of failure is representative of matrix-dominated failure. However, effects of transverse constant tensile load on longitudinal tensile mechanical properties are indistinctive compared with corresponding uniaxial longitudinal tensile mechanical properties. This could be due to a larger difference between longitudinal and transverse mechanical properties. Its dominating failure mode is typical fiber-dominated mode. Effects on biaxial tensile load ratios on its transverse stress-strain behaviors are obvious; whereas, longitudinal stress-strain behaviors under different biaxial tensile load ratios are almost identical. Large differences between longitudinal and transverse tensile properties can be direct reasons resulting in dissimilarities between longitudinal and transverse tensile mechanical behaviors of cord-rubber composite under biaxial tensile loading.

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Section: Experimental Cruciform Specimensmentioning

confidence: 99%

Mechanical Properties of Nylon6 Cord-Rubber Composite Subjected to Biaxial Tensile Loads

Zhang

Wan

2002

Journal of Elastomers & Plastics

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“…Two excellent reviews of phenomenological failure criteria are by Nahas (1986) and Labossiere and Neale (1987). Other surveys of phenomenological anisotropic failure theories exist (Sandhu, 1972;Bert et al, 1969;Kaminski and Lantz, 1969;Sendeckyj, 1972;Vicario and Toland, 1975;Rowlands, 1975;Tsai, 1984;Snell, 1978). Nahas, in his review, classifies failure criteria into four categories: direct laminate criteria, limit criteria, interaction criteria and tensor polynomial criteria.…”

Section: Phenomenological Failure Criteriamentioning

confidence: 99%

A Review of Failure Models for Ceramic Matrix Composite Laminates Under Monotonic Loads

Tripp

Hemann

Gyekenyesi

1989

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation;

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Ceramic matrix composites offer significant potential for improving the performance of turbine engines. In order to achieve their potential, however, improvements in design methodology are needed.In the past most components using structural ceramic matrix composites were designed by "trial and error" since the emphasis on feasibility demonstration minimized the development of mathematical models. To understand the key parameters controlling response and the mechanics of failure, the development of structural failure models is required.A review of short term failure models with potential for ceramic matrix composite laminates under monotonic loads is presented.Phenomenological, semiempirical, shear-lag, fracture mechanics, damage mechanics, and statistical models for the fast fracture analysis of continuous fiber unidirectional ceramic matrix composites under monotonic loads are surveyed.

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“…The direction of the band was only approximately parallel to the helical filaments stressed in -9 tension. The fracture band can be seen in the tubes with 150 windings shown in figure 6 by observing the disrupted lines of reflected light and the areas of lighter color. The lighter color gives evidence of delamination occurring under the external surface of the tube.…”

Section: --mentioning

confidence: 99%

Torsional shear strength of filament-wound glass-epoxy tubes

1972

Composites

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Results are presented from torsion tests conducted on 36 multilayered, filamentwound, glass-epoxy tubes. Configurations with helical windings and with alternating helical and circumferential windings were investigated for various winding angles. loadings, shear moduli deduced from linear shear stress-strain curves were found to be in reasonable agreement with analytical predictions. Under larger loadings, various degrees of nonlinearity in shear stress-strain curves were encountered, depending on the helical winding angle. Experimental torsional strengths were defined by a 0.2 -percent offset yield s t r e s s o r by maximum stress when large nonlinearities did not exist. These strengths were compared with torsional buckling predictions for orthotropic cylinders, and with material strength predictions based on orthotropic yield criteria and elastic s t r e s s analysis. puted elastic buckling stresses were considerably higher than the experimental strengths for most of the test specimens except for those with only 30° and 450 windings. Experimental torsional strengths-were found to correlate with conventional yield predictions if predicted yielding in certain layers were ignored o r i f unrealistically large transverse tensile and shear strengths of unidirectional laminae were employed in the analysis. Configurations with helical windings and with alternating helical and circumferential windings were investigated for various winding angles. small loadings, shear moduli deduced from linear shear stress-strain curves were found to be in reasonable agreement with analytical predictions. Under larger loadings, various degrees of nonlinearity in shear stress-strain curves were encountered, depending on the helical winding angle. Experimental torsional strengths were defined by a 0.2-percent offset yield s t r e s s or by maximum stress when large nonlinearities did not exist. These strengths were compared with torsional buckling predictions for orthotropic cylinders and with material strength predictions based on orthotropic yield criteria and elastic s t r e s s analysis. Computed elastic buckling stresses were considerably higher than the experimental strengths for most of the test specimens except for those with only 30° and 45O windings. Experimental torsional strengths were found to correlate with conventional yield predictions i f predicted yielding in certain layers were ignored, or i f unrealistically large transverse tensile and shear strengths of unidirectional laminae were employed in the analysis.

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Behavior of Fiber-Reinforced Plastic Laminates under Biaxial Loading

Cited by 11 publications

References 0 publications

Mechanical Properties of Nylon6 Cord-Rubber Composite Subjected to Biaxial Tensile Loads

Mechanical Properties of Nylon6 Cord-Rubber Composite Subjected to Biaxial Tensile Loads

A Review of Failure Models for Ceramic Matrix Composite Laminates Under Monotonic Loads

Torsional shear strength of filament-wound glass-epoxy tubes

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