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首页> 外文会议>SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida >An Experimental/Analytical Correlation of the Elastic Response of a Model Composite Under INterlaminar Tension
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An Experimental/Analytical Correlation of the Elastic Response of a Model Composite Under INterlaminar Tension

机译：层间张力下模型复合材料弹性响应的实验/分析相关性

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摘要

The elastic surface strain distribution of a model composite made from silicon carbide fibers and epoxy was quantified usign moire interferometry. The specimen had a cruciform geometry with two rows of fibers perpendicular to the loadign direction. The fibers spanned the width of the specimen parallel to and in the center of the unloaded arms of the cruciform geometry. Moire measurements were obtained at three load levels. A finite element model (FEM) of the specimen was constructed and analyzed. The experiment and modeling were repeated on a cruciform specimen without fibers. In all cases, comparison between the moire and FEM strain distributions showed excellent agreement in both the distribution shape and the magnitude of obtained strain data. This agreement is important to establish the veracity of micromechanical calculations for structural graphite-resin composites, where the influence of the small fiber diameters (0.007 mm) may not be measurable with the moire technique.
机译：用碳化硅干涉法对由碳化硅纤维和环氧树脂制成的模型复合材料的弹性表面应变分布进行了定量。该样品具有十字形的几何形状，其具有垂直于载荷方向的两排纤维。纤维在平行于十字形几何结构的未加载臂并在其中心的位置横跨样品的宽度。在三个载荷水平下获得的莫尔条纹测量值。建立并分析了样品的有限元模型。在没有纤维的十字形样品上重复实验和建模。在所有情况下，莫尔和FEM应变分布之间的比较表明，在分布形状和所获得应变数据的大小上都具有极好的一致性。该协议对于建立结构石墨-树脂复合材料的微机械计算的准确性非常重要，在这种情况下，用莫尔条纹技术无法测量小纤维直径（0.007 mm）的影响。

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