Influence of fiber orientation angle on mode I delamination fracture toughness of 3D printer molded CFRTP laminates

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  • 3Dプリンタ成形CFRTP積層板のモードI層間はく離破壊靭性に及ぼす繊維配向角の影響

Abstract

<p>In this study, the mode I delamination fracture toughness of CFRTP laminates molded by FDM type 3D printer was evaluated by DCB test. This CFRTP obtained in the present study was compared with the result of 0° material in which the fiber orientation angle was not changed, and it was considered how the difference in the fiber orientation angle of the CFRTP laminated material affects the toughness value around the interface of the laminates. The appearance of the fracture surface of the test pieces was observed by SEM. As a result, it was found that the interlaminar fracture toughness value of the CFRTP laminates with different fiber orientation angles formed by 3D printer this time is low. As a result of SEM observation, a rough fracture surface was observed at the place where the toughness value increased, and a smooth fracture surface was observed at the place where the toughness value decreased, which is one of the reasons for the result.</p>

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