Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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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 (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Oh, Woo Jin (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Won, Jong Sung (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Lee, Ha Ram (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) ;
  • Youn, Ju Young (Wooyang Advanced Material Co.) ;
  • Lee, Seung Goo (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
  • 구선웅 (충남대학교 유기소재.섬유시스템공학과) ;
  • 오우진 (충남대학교 유기소재.섬유시스템공학과) ;
  • 원종성 (충남대학교 유기소재.섬유시스템공학과) ;
  • 이하람 (충남대학교 유기소재.섬유시스템공학과) ;
  • 윤주영 (우양신소재) ;
  • 이승구 (충남대학교 유기소재.섬유시스템공학과)
  • Received : 2018.11.25
  • Accepted : 2018.12.14
  • Published : 2018.12.27
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Abstract

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.

Keywords

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Figure 1. Flexural strength and modulus of the PAN/Pitch CF composites manufactured at different composition ratio; (a) flexural strength, (b) flexural modulus.

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Figure 2. Storage modulus and tan δ of the PAN/Pitch CF composites at different conditions with a heating rate of 5℃/min.

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Figure 3. The dimensional stability as a function of temperature for PAN/Pitch CF composites at different conditions.

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Figure 4. Impact properties of the PAN/Pitch CF composites with different hybrid ratio.

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Figure 5. Morphological images of PAN/Pitch CF composites with different hybrid ratio after hole machining; (a) 4/0, (b) 3/1, (c) 2/2, (d) 1/3, (e) 0/4 at hybrid ratio.

Table 1. Specifications of materials used in this study

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Table 2. Physical properties of as-received PAN- and Pitch- based carbon fibers

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Table 3. Hybrid ratio of PAN- and Pitch- CF rein-forced composites in this work

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Table 4. Linear thermal expansion of PAN/Pitch CF composites after thermomechanical analysis with different hybrid ratio

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Table 5. Absorbed energy of PAN/Pitch CF composites after drop weight impact test with different hybrid ratio

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