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Mechanical Behaviors of CFRP Laminate Composites Reinforced with Aluminum Oxide Powder 원문보기

한국동력기계공학회지 = Journal of the korean society for power system engineering, v.18 no.6, 2014년, pp.166 - 173  

Kwon, Oh-Heon (Department of Safety Engineering, Pukyong National University) ,  Yun, Yu-Seong (IBS Innovation Co.) ,  Ryu, Yeong-Rok (Department of Safety Engineering, Graduate School, Pukyong National University)

Abstract ▼ AI-Helper 아이콘AI-Helper

In this study, a laminated composite material with dispersing aluminum oxide powder between the CFRP laminate plies, and also CFRP composites without aluminium oxide powder were fabricated for Mode I experiments using the DCB specimen and a tensile test. The behavior of the crack and the change of t...

주제어

#Carbon Fiber Reinforced Plastic   #Laminates   #Aluminum Oxide Powder   #Fracture Toughness   #Acoustic Emission  

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제안 방법

  • The experiments were performed by using the two kinds of specimens of the only CFRP prepreg laminate and CFRP laminates spreaded and reinforced by aluminum oxide powders in the interface. Also the tests were implemented with AE sensors under the tension loading and DCB condition for the mechanical properties and interlaminar fracture toughness evaluation.
  • However until now the researches for the CFRP composite with the interlayer spreaded the reinforced powders between the laminates have not been done sufficiently. In this study, the CFRP-alumina composite spreaded with aluminum oxide powder in the interface between laminates was evaluated for the fracture toughness. And the evaluation for restraint properties of the crack extension under the DCB(Double cantilever bending) test6) and also AE characteristics experiment were implemented to estimate the crack behaviors.
  • A tensile test was carried out by the displacement control (1mm/min) by using a universal test machine(50kN), and the strain in the center of the specimen was obtained by attaching a strain gauge. The DCB fracture test was performed by the mini tensile tester(Tinus Olsen Inc., 5kN) with 0.5mm/min displacement control. A crack extension length was measured by using a stereoscopic microscope and recorded through a digital converter.
  • The experiments were carried out to compare and evaluate the mechanical behaviors for a CFRP composite with aluminum oxide powder, which is a reinforcement of the interlayer in laminated composite by a DCB test specimen with the AE sensor. The results were as follows.
  • And the evaluation for restraint properties of the crack extension under the DCB(Double cantilever bending) test6) and also AE characteristics experiment were implemented to estimate the crack behaviors. The experiments were performed by using the two kinds of specimens of the only CFRP prepreg laminate and CFRP laminates spreaded and reinforced by aluminum oxide powders in the interface. Also the tests were implemented with AE sensors under the tension loading and DCB condition for the mechanical properties and interlaminar fracture toughness evaluation.

대상 데이터

  • The CFRP material was a woven type carbon fiber reinforced prepreg(Hankuk Cabron Co.) and an aluminum oxide powder has particle size of 1μm (R&B Inc.).

이론/모형

  • Furthermore modeⅠ energy release rate G under DCB test was obtained by using MBT (Modified Beam Theory) formula (2) on the basis of the ASTM D 5528-018).
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참고문헌 (9)

  1. C. A. Mahieux, 2001, "Cost effective manufacturing process of thermoplastic matrix composites for the traditional industry: the example of carbon-fiber reinforced thermoplastic flywheel", Composite Structures, Vol. 52, pp. 517-521. 

    상세보기 crossref

  2. C. T. Sun, and M. G. Manobaran, 1983, "Growth of Delamination Crack due to in [90/0/90] Laminate", Journal of Composite Materials, Vol. 17, pp. 127-136. 

  3. Y. S. Yun, and O. H. Kwon, 2005, "The Evaluation of Interlaminar Fracture Toughness and AE Characteristic in a Plain Woven CFRP Composite With DCB Specimen", Journal of the KOSOS, Vol. 20, No. 1, pp. 49-54. 

  4. S. C. Park, S. S. Kang, G. Y. Kim, and J. H. Choi, 2013, "Evaluation of tensile strengths and fracture toughness of plain weave composites", Journal of the Korean Society of Marine Engineering, Vol. 37, No. 8, pp. 862-868. 

    원문보기 상세보기 crossref

  5. S. J. Park, J. S. Oh, J. R. Lee, and K. Y. Rhee, 2003, "Effect of Surface Treated SiC on Thermal Stability and Mechanical Interfacial Properties of Carbon Fiber/Epoxy Resin Composites", Journal of the Korean Society for Composite Materials, Vol. 16, No. 3, pp. 25-31. 

  6. P. E. Keary and L. B. Ilcewicz, 1985, "Mode I Interlaminar Fracture Toughness of Composites Using Slender Double Cantilevered Materials, Vol. 19, pp. 145-177. 

  7. Standard Test Method for "Tensile Properties of Polymer Matrix Composite Materials", ASTM D 3039, 2000. 

  8. Standard Test Method for "Mode I Interlaminar Fracture Toughness of Unidirectional Fiber - Reinforced Polymer Matrix Composites", ASTM D 5528 - 01, 2000. 

  9. Z. Li, 1996, "A new technique for determining fracture toughness K I C and its confidence with single DCB specimen", Engineering Fracture Mechanics, Vol. 55, pp. 133-137. 

    상세보기 crossref

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