材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
論文
CFRTPの成形温度が曲げ強度と振子型硬さ試験機による硬さに及ぼす影響
鏑木 哲志鈴木 良祐黒瀬 雅詞松原 雅昭田代 継治
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2015 年 64 巻 12 号 p. 1010-1017

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In order to evaluate the effect of carbon fiber reinforced thermoplastic (CFRTP) forming temperature on the flexural strength in a non-destructive inspection, the relationship between the flexural strength and the hardness using pendulum hardness tester was investigated in the CFRTP laminated sheets molded at some different temperatures. Carbon fiber of plain weave and acrylic resin (PMMA) were used as reinforcement and matrix, respectively. The laminated sheet was formed by hot pressing. As a result, the flexural strength increased with increasing forming temperature. The new damping hardness (HDH) measured by the pendulum type hardness tester showed a good correlation with the flexural strength. In the laminated sheet formed at low temperature, the damping hardness measured at different position exhibited large deviation. This variation is due to the random array of fiber bundles. Therefore the homogeneity and the mechanical properties of CFRTP can be estimated in a non-destructive testing by the damping hardness measured at a number of positions.

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