Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 54, Issue 12, Pages 1549-1559Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998316636458
Keywords
Porosity; Al5052; CFRP; shear lap test; three-point bending test; R-a value
Categories
Funding
- Advanced Technology Center Project - Ministry of Knowledge Economy (MKE), Korea [10039031]
- National Research Foundation of Korea (NRF) - Korea government (MSIP) through GCRC-SOP [2011-0030013]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10039031] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this study, aluminum samples with various microsurface roughness values were produced by sandblasting to investigate the effect of the R-a (Surface roughness) value on the samples' mechanical properties. Toward this end, a carbon fiber reinforced plastic/Al5052 hybrid sample was produced, and its mechanical properties were investigated through a tensile test, three-point bending test, and shear lap test. The theoretical and experimental tensile strength values of the hybrid composite were compared. During the bending test, CFRP and AI5052 separated in untreated specimens. A side-view examination revealed that the adhesion was best when the surface roughness was greatest (R-a = 1.2 mu m). Furthermore, shear load increased with the surface roughness. Therefore, the surface treatment was a crucial factor in making the specimen surface even and in increasing the roughness and therefore improving adhesion.
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