• Title/Summary/Keyword: 유기 섬유

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Engineering Properties of HPFRCC Including Both Organic and Inoranic Fibers (유·무기 섬유를 복합사용한 HPFRCC의 공학적 특성)

  • Lee, Jong Tae;Han, Cheon-Goo
    • Journal of the Korea Institute of Building Construction
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    • v.15 no.6
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    • pp.615-620
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    • 2015

  • The high performance fiber reinforced cementitious composite (HPFRCC) controls the cracking development of the structure by inducing micro-cracking and strain hardening behavior after the initial cracking under the tensile conditions. Although, in Korea, the research about manufacturing the single-fiber reinforced cementitious composite or the mechanical properties of hardened status has been conducted, the research to apply the HPFRCC with multi-fiber is not sufficient. Hence, in this research, considering the workability and economic aspect for practical applications, the engineering properties of HPFRCC with combined long steel fiber (SL) and long organic fiber (OL) are evaluated such as workability and strength. As a result of evaluating the engineering properties of HPFRCC, the most favorable performance was obtained when the mixture contained 1.5% of combined SL and OL.

  • https://doi.org/10.5345/JKIBC.2015.15.6.615 인용 PDF KSCI

Study on the Mechanical Properties of Hybridized Carbon Fiber Composite According to Stacking Structure (하이브리드 탄소섬유 적층구조에 따른 복합재료의 기계적 특성 연구)

  • Koo, Seon Woong;Oh, Woo Jin;Won, Jong Sung;Lee, Ha Ram;Youn, Ju Young;Lee, Seung Goo
    • Textile Coloration and Finishing
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    • v.30 no.4
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    • pp.313-320
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    • 2018

  • As carbon fiber reinforced composites(CFRP) are widely used in aerospace, automobile, marine, and sports goods applications, they have been studied extensively by various researchers. However, CFRP have been pointed out because of machining problems such as delamination and burr phenomenons. Especially, hole machining process, drilling, has non-smooth features on inlet and outlet surfaces of drilled hole. This kind of machining problem can be controlled to some extent by using high modulus pitch-CF, which has considerable effects on fracture behavior of composite compared with only PAN CF composite. Therefore, PAN and pitch hybridized CF composites were prepared having high strength and modulus. The results demonstrate that the hybrid CFRP specimens with pitch CF offer the good potential to enhance modulus as well as strength properties. Dynamic mechanical, flexural, and impact properties were measured and analyzed. Morphological surface of the composites were also observed by IFS-28, canon after hole machining.

  • https://doi.org/10.5764/TCF.2018.30.4.313 인용 PDF KSCI HTML