...Z-M Huang; K Fujihara; S Ramakrishna This paper investigates the tensile behavior of plain regular braided fabric reinforced composites subjected to uniaxial load. An experimental program is performed to characterize the stiffnesses and strengths of a number of braid composites. Two different...

... sensitive mechanical properties are to these parameters. In this paper, results from a series of tests on 2D triaxial braid composite panels are presented. The focus of these experiments is to determine the sensitivity of strength and fiber volume fraction to a small degree of misalignment (±1 to 5...

...TL Norman; C Anglin; D Gaskin The unnotched and notched (open hole) tensile strength and failure mechanisms of two-dimensional (2D) triaxial braided composites were examined. The effect of notch size and notch position were investigated. Damage initiation and propagation in notched and unnotched...

...V Giurgiutiu; KL Reifsnider A ressessment of existing theories for calculating the strength of random and quasi-random fiber composites is presented. Fundamental aspects regarding the physical model, macromechanics analysis, fiber distribution functions, generalized failure criterion...

... in which fibers did not fail, but bridged the cracks and resulted in longer fatigue lives. KEYWORDS: titanium matrix composites (TMCs) SCS-6 fiber, strength, fatigue, crack initiation, crack growth, damage, failure modes Titanium matrix composites have several forms of damage behavior. Fatigue crack growth...

... and correlated better with the extensometer readings. Experimental strains correlated reasonably well with analytical predictions in the longitudinal, 0°, fiber direction but not in the transverse direction. Tensile strength results were not always predictable even in reinforcing directions. Minor changes...

... behavior of the fabric composite was shown to be principallycaused by damage propagation rather than by plastic deformation of the matrix. KEYWORDS: composite materials, fabric, strength, micromechanics, finite element Woven fabric-reinforced composite materials are often used to construct plate or shell...

...MC Waterbury; LT Drzal A method is described and experimental results given which demonstrate the feasibility of determining fiber strengths at short gage lengths by monitoring the fiber failure process during the embedded single-fiber fragmentation test. A computerized weakest link fiber model...

..., they are shown to be insensitive to the magnitude of bending. When under compressive load, a (±45) s , angle-ply specimen is shown to be suitable for obtaining axial shear properties of a unidirectional lamina. Axial, transverse, and shear moduli as well as major Poisson's ratio and the corresponding strength...

... at the grips occurs. Based on the failure mode observation and tensile strength evaluation, development of a V-notched tension test with large L/d ratio is suggested as a possible replacement for the current ASTM tension test (ASTM Test Method for Tensile Properties of Pultruded Glass Fiber-Reinforced Plastic...

... and predicts first ply failure of laminae under plane stress conditions. Fiber stress and strength are not included in the criterion. The matrix stresses are calculated by nonlinear analysis, assuming the nonlinearity to be confined to shear behavior. When very large interlaminar stresses develop [such as near...

...JM Lifshitz Results of an experimental study of the influence of strain rate, temperature, and humidity on the mechanical behavior of a graphite/epoxy fiber composite are presented. Three principal strengths (longitudinal, transverse, and shear) and four basic moduli (longitudinal, transverse...