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Effect of the Number of CFRP Prepregs and Roughness at the Bonding Area on the Spring-Back and Flexural Strength of Hybrid Composites of CFRP Combined with CR980

1
Precision Manufacturing System Division, Graduate School, Pusan National University, San 30 Chang Jun-dong, Geum Jung-Gu, Busan 46241, Korea
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School of Mechanical Engineering, Kyungnam University, 7 Kyungnamdaehak-ro, Masanhappo-gu, Changwon-si, Gyeongsangnam-do 51767, Korea
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Department of Computer Software Engineering, ChangShin University, 262 Paryong-ro, Masanhoiwon-gu, Changwon-si, Gyeongsangnam-do 51352, Korea
4
School of Mechanical Engineering, Pusan National University, San 30 Chang Jun-dong, Geum Jung-Gu, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
Metals 2019, 9(10), 1054; https://doi.org/10.3390/met9101054
Received: 5 August 2019 / Revised: 24 September 2019 / Accepted: 26 September 2019 / Published: 28 September 2019
Hybrid composites in which a CR980 metal plate was bonded on carbon-fiber-reinforced plastic (CFRP) were prepared. Hybrid composites were two types of CFRP/CR980 hybrid composites and CR980/CFRP hybrid composites. The properties of the hybrid composites according to surface roughness on CR980 plate and the laminating number of CFRP prepregs were analyzed. The spring-back or spring-go angles were also measured through the V-bending test of hybrid composites. In addition, a three-point bending test for the hybrid composites was conducted to measure the flexural strength. Spring-back occurred in the CFRP/CR980 hybrid composites, while spring-go was observed in the CR980/CFRP hybrid composites. Voids were not found at the bonding area of the CFRP and CR980. As the roughness at the bonding area increased, the flexural strength slightly increased. The higher the laminating number of the CFRP prepregs, the lower the deformation value. CFRP/CR980 was deformed more easily than CR980/CFRP. View Full-Text
Keywords: CFRP prepreg; V-bending test; three-point bending test; spring-back; flexural strength CFRP prepreg; V-bending test; three-point bending test; spring-back; flexural strength
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Hwang, J.H.; Jin, C.K.; Seo, H.Y.; Kang, C.G. Effect of the Number of CFRP Prepregs and Roughness at the Bonding Area on the Spring-Back and Flexural Strength of Hybrid Composites of CFRP Combined with CR980. Metals 2019, 9, 1054.

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