Microstructure and Nanostructure MaterialsNo Access

AN EXPERIMENTAL STUDY OF MICRO-VOID CREATION BY IMPURITY IN COMPOSITE MATERIALS DURING VARTM PROCESS

Division of Marine Equipment Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Kyung-Man Moon

Division of Marine Equipment Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Byeong-Woo Lee

Division of Marine Equipment Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Joon-Young Kim

Division of Marine Equipment Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Dong-Hun Yang

Division of Material Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Sung-Won Yoon

Division of Material Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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Hee-Beom An

Division of Material Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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, and

Seung-Jun An

Division of Material Engineering, Korea Maritime University, 727 Taejong-ro, Yeongdo-Gu, Busan, 606-791, South Korea

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https://doi.org/10.1142/S0217979211066581Cited by:1 (Source: Crossref)

Abstract

The effects of impurities on the generation of voids in composites fabricated by vacuum-assisted resin transfer molding was investigated to help reduce mechanical weakening in large structures. Impurities were intentionally inserted into laminates, which were then observed optically. Internal voids were generated in specimens with impurities of 2 – 3mm thickness. The voids grew as the impurities' thicknesses increased to 4 – 5 mm. The voids' diameters were proportional to the thickness of the impurity. Void generation was shown to depend on the thickness of impurities. Environmental control during vacuum-assisted resin transfer molding was shown to be important for ensuring the quality of the resulting composites.

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