Results 201 to 210 of about 5,244 (242)

Interlaminar shear fracture of laminated composites

International Journal of Fracture, 1990
The interlaminar fracture toughness in mode II and mode III of a number of advanced composites was studied using beam type test specimens and scanning electron microscopy. Special emphasis was placed on elucidating the material aspects of the fracture process and on quantifying the effect of matrix on fracture energy. The fracture energy in mode II was
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Interlaminar shear effects in cord-rubber composites

Fibre Science and Technology, 1982
Cord-rubber composite action of single ply and two ply specimens subjected to axial loading is discussed. The shear coupling phenomenon and its effect on two ply (±α) laminate response is experimentally demonstrated. Interlaminar shear strain is found to be significant in such specimens and to greatly influence specimen stiffness. Interply thickness to
J.L. Ford, H.P. Patel, J.L. Turner
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Interlaminar shear in carbon fiber polymer-matrix composites, studied by measuring the contact electrical resistance of the interlaminar interface during shear

Composite Interfaces, 1998
By measuring the contact electrical resistance of the interlaminar interface of a unidirectional continuous carbon fiber epoxy-matrix composite during shear, the interlaminar shear process was monitored in real time. The resistance increased throughout the entire shear process for a low curing pressure, but decreased in the initial stage of shear for a
null SHOUKAI WANG, D.D.L. Chung
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Influence of porosity on the interlaminar shear strength of fibre-metal laminates

47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006
Structures manufactured in fibre-metal laminates (e.g. Glare) have been designed considering ideal mechanical properties determined by the Classical Lamination Theory. This means that among other assumptions, perfect bonding conditions between layers are assumed.
Lopes, C.S., Remmers, J.J.C., Gürdal, Z.   +2 more
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Delamination of Composite Laminates Stimulated by Interlaminar Shear

1986
Although interlaminar shear stresses become very large in composite laminates, in the literature there is no conclusive demonstration of the onset of delamination in composites due to interlaminar shear. The present work addresses the title problem by accurate stress analysis, application of an average stress failure criterion over a predominant stress
SR Soni, RY Kim
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Aging Effects on the Interlaminar Shear Strength of High-Performance Composites

Journal of Aircraft, 2001
The effect of isothermal aging on interlaminar shear strengths of quasi-isotropic composites laminates were evaluated by using ASTM D 3846-94, Standard Test Method for In-Plane Shear Strength of Reinforced Plastics. Thermoset bismaleimide (IM7/5260) and thermoplastic polyimide (IM7/K3B) were investigated to determine the aging degradation in different ...
Deneen Taylor, Kuen Lin
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A bioinspired study on the interlaminar shear resistance of helicoidal fiber structures

Journal of the Mechanical Behavior of Biomedical Materials, 2016
Helicoidal fibril structures are identified in many natural animals and plants. This research uses an integrated experimental and modeling approach to study the interlaminar shear resistance of bioinspired helicoidal fiber structures. First, helicoidal fiber-reinforced polymeric composites were created using 3D printed fiber cores and polymeric ...
Brian, Ribbans, Yujie, Li, Ting, Tan
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Modelling the effect of cracks on interlaminar shear strength

Composites Part A: Applied Science and Manufacturing, 1996
Short-beam shear tests of unidirectional carbon fibre/epoxy are analysed assuming shear deformations to be concentrated at the resin-rich interfacial layers between plies. A two-dimensional finite element model is used with linear elastic continuum elements to represent the plies, and non-linear springs to model the interfaces.
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Inclined Double Notch Shear Test for Improved Interlaminar Shear Strength Measurements

Journal of Composites Technology and Research, 1998
A novel method to measure interlaminar shear strengths of composites is presented. This method uses the double notch shear (DNS) specimen and modifies the load introduction by use of a fixture. The main concept is to eliminate the compressive stress intensity at the notch roots, arising from the external load, by imposing a counteracting tensile load ...
WS Johnson, JE Masters, DW Wilson, JM Neumeister, AC Pålsson   +4 more
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Evaluation of interlaminar shear of laminate by 3D digital holography

Optics and Lasers in Engineering, 2017
In this paper, we propose a three-color holographic interferometer devoted to the 3D displacement field analysis of a composite material. The method in applied to analyze cracks during a short beam shear test. The tested materials are a glass/epoxy composite, a flax/carbon/epoxy composite and a flax/epoxy composite.
Mayssa, Karray, Poilâne, Christophe, Mohamed, Gargouri, Picart, Pascal   +3 more
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