Tensile fracture characteristics of carbon fibers collected from the outer and inner parts of a CFRP laminate by thermal decomposition

Matsuda Shinya; Miyake Manami; Oshima Kazumasa

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Tensile fracture characteristics of carbon fibers collected from the outer and inner parts of a CFRP laminate by thermal decomposition

机译：Tensile fracture characteristics of carbon fibers collected from the outer and inner parts of a CFRP laminate by thermal decomposition

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摘要

Thermal decomposition treatment (TDT) is a typical recycling method for CFRP. However, the recovered CFs (rCFs) tend to show a decrease in performance owing to the thermo-oxidation during this process. In particular, the thermo-oxidation rates of the outer and inner parts of CFRP are different during TDT; thus, the amount of damage is different between the rCFs collected from the outer (oCFs) and inner (iCFs) parts of CFRP. This study investigated the tensile fracture characteristics of the oCFs and iCFs of the CFRP laminates subjected to TDT, through the single-fiber tensile test and fracture surface observations. The tensile strength of the iCFs was higher and presented a narrower variation than that of the oCFs because the fracture of iCFs occurred from the largest pit formed on the skin whereas that of oCFs occurred from the largest defect in the core. Finally, the strength distribution of the rCFs collected randomly from the TDT treated CFRP was estimated using a mixture distribution model with the aid of the experimental data. The model fitted the strength distribution well. The results indicated that the strength of the rCFs varied more widely with an increase in the number of rCFs undergoing the core fracture.

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来源
《Composite structures》 |2022年第7期|115603.1-115603.8|共8页
作者
Matsuda Shinya; Miyake Manami; Oshima Kazumasa;
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作者单位

Kagawa Univ, Fac Engn, Dept Adv Mat Sci, 2217-20 Hayashicho, Takamatsu, Kagawa 7610396, Japan;

Kyushu Univ, Grad Sch Engn, Dept Chem Engn, 744 Motooka,Nishi ku, Fukuoka, Fukuoka 8190395, Japan;

Kagawa Univ, Fac Engn & Design, Dept Engn & Design, Area Adv Mat Sci, 2217-20 Hayashicho, Takamatsu, Kagawa 7610396, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Carbon fibers; Thermal decomposition treatment; Fracture mechanism; Tensile strength; Weibull distribution; Mixture distribution model;

Tensile fracture characteristics of carbon fibers collected from the outer and inner parts of a CFRP laminate by thermal decomposition

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