Study on degradation of glass fiber sheet moulding compound under hot water.pdf

1、followed by tensile test with Acoustic Emission (AE) monitoring and microscopic investigation to evaluate its initial fracture and degradation mechanism.The specimens were prepared in two perpendicular directions determi

2、ned as Y (resin flowing direction) and X direction in the paper.
　　The initial fracture generated in tensile test was determined by both tensile stress-strain curve and AE measurement (140 kHz and 1 MHz resonant frequ

3、encies).The result shows that different fiber orientation and mechanical property between Y and X are occurred due to the fiber flowing during molding.In most cases Y specimen tensile strength and modulus is higher than