Abstract
The purpose of this work is to develop the procedure and mathematic model to estimate mechanical properties of short grass fiber filled PA6. First, vibration tests were carried out to study vibration characteristics of composite material. Then various micro-mechanics models for short fiber composites are evaluated using vibration and tensile test varying in-plane tensile angle. Along the evaluation, a combination of micro-mechanics model is proposed to get appropriate results. Also, procedure to identify young's modulus of matrix and dumping factor of composite by comparison of vibration test results and FEM considering in-plane distributions of fiber orientation is demonstrated. Through evaluation, the FEM analysis using mechanical properties of composite material determined by proposed procedures considering fiber orientation and distribution of fiber orientation angle gives good estimation
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