...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...

... laminations subjected to high-frequency, low-amplitude impact loads. The material response was evaluated by change in stiffness, residual work, and by permanent set and damping coefficient and other related features. The objective of the study was to evaluate the performance, and thereby assess...

..., damage progression, test techniques, stiffness, coefficient of thermal expansion (CTE) Many types of advanced composite materials are currently being evaluated for high-temperature airframe and propulsion system applications. These materials include polymer, metal, and ceramic matrix composite systems...

..., triaxially braid, unit cell, stiffness, strength, Poisson's ratio, laminated plate theory, fiber waviness, diagonal brick analysis, finite element analysis Braid-reinforced composites are one of the many textile fabric- reinforced composites that are under consideration as lower cost and higher impact...

.... However, a correlation scheme, based on a cumulative damage model and a stiffness change of the material, was developed for the individual specimen under test. This scheme predicts that strength will begin to degrade at about 60 to 80% of the fatigue life of the specimen, depending on the laminate...

...JN Yang; SH Yang; DL Jones A stiffness-based statistical model is proposed for predicting the fatigue life of composite laminates under constant-amplitude tensile cyclic loadings. The model parameters are determined using measured stiffness degradation data. Experiments have been performed...

... in the elastic unloading modulus (that is, stiffness) because of fatigue cycling. This type of data could be used to set accept/reject levels for a composite panel based on C-scan indications. References Davis , L. W. and Sullivan , P. G. , “ Nondestructive Evaluation ,” Summary...

... to the deflection under the same loading of uniform thickness components with the same geometry. TECHNICAL NOTE Kenneth L. Reifsnider 1 and T. Loumont 1 A Stiffness-Based Approximate Method for Sizing of Nonuniform-Thickness Sandwich Components REFERENCE: Reifsnider, K. L. and Loumont, T., "A Stiffmess-Basod...

... singularities and redistribution of stresses within a thin slice of warp-fill fiber bundles. The model predicts that warp curvature and thermal stresses at low temperatures are beneficial in reducing crack-tip singularities of fill cracks. The opposite is true for stiffness, which is decreased both by curvature...

... are included in the analysis. Good correlation is obtained between theory and experiment. composite materials graphite composites stiffness graphite/epoxy glass/epoxy unidirectional composites micromechanics analysis composite moduli References Adams , D. F. and Miller , A. K...