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Mechanical Characterization and Fracture Behavior of Mat Reinforced Composite Materials
http://hdl.handle.net/10212/2176
http://hdl.handle.net/10212/2176e601a8e2-f37a-481a-adc8-39d5dfe82f69
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内容・審査結果の要旨 (333.5 KB)
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内容の要約 (59.4 KB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2015-03-24 | |||||||||
| タイトル | ||||||||||
| タイトル | Mechanical Characterization and Fracture Behavior of Mat Reinforced Composite Materials | |||||||||
| 言語 | en | |||||||||
| その他のタイトル | ||||||||||
| その他のタイトル | マット強化複合材料の機械的特性評価と破壊挙動に関する研究 | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
张, 志远
× 张, 志远
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | thermosets | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | FRP | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | glass mat | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | glass fiber | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | volume fraction | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | notched strength | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | acoustic emission | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | needle punch | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | delamination | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | fracture behavior | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | strength prediction | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | characteristic distance | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | fracture toughness | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | fracture mechanics | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | recycled paperboard | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | paperboard composite | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | GMT | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | fiber length | |||||||||
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| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | impregnation | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Nowadays, fiber reinforced composites draw more and more attention due to its excellent mechanical property with lighter weight. Many researches indicated that with the right design and process, it is completely possible to apply composites instead of conventional metals in various fields including civil engineering, sports, aircrafts and automobile-related and also offshore oil fields. On the other hand, besides the mechanical property of fiber reinforced composites, the application problems are also under considerations, such as the composite joints. Three types of the composite joints are in use included adhesive joint, mechanical joint and combination joint. Among the three types, the mechanically fastened joint has such advantages that the connection of the elements can be easily performed and the variation of its strength is relatively small. In this thesis, the research was focused on mechanical properties of mat reinforced composites, especially the notched properties with open hole.In the first part of the research, glass fiber chopped strand mat and unsaturated polyester resin were used to fabricate glass mat composite (GMC) plates in different plies by hand lay-up method. GMC plates were cut into specimens of different dimensions, including 15, 20, 30 and 50 mm in width. Drill with 10 mm of diameter was employed to make drilling hole on the materials. The influence of open-hole on mechanical property was investigated from tensile test. Different factors, included volume fraction of glass fiber, material thickness and width over diameter ratio (w/d), were investigated to evaluate the influence of mechanical property on specimens with open hole.Furthermore, the fracture behavior on glass mat composite was analyzed. In the investigation of the fracture behavior of notched specimens, two different fracture areas defined as parallel area and fan shape area were found and the length of parallel area was measured. To evaluate the materials property on notched specimens, characteristic distance was introduced and calculated by linear elastic method in finite element software (MSC-Marc). The results revealed characteristic distance had a good correspondence with parallel area length.In order to improve the mechanical property of notched glass mat composite, needle punched process was introduced which can bring thickness-direction fibers to reinforced the thickness direction of the composite. Normal glass mat (GM) and needle punched glass mat (NGM) were employed to fabricate composite with different volume fraction of glass fiber. Circular holes were drilled on the specimens. Decreasing of notched strength of drilled specimens from unnotched strength was compared between glass mat composites (GMC) and needle punched glass mat composite (NGMC). Acoustic emission (AE) was also carried out to monitor the damage process during tensile test. The tensile results and fracture behavior were analyzed and discussed. The optical observation was employ to examine the fracture characteristics between GMC and NGMC. After that, associated with the results of GMC and NGMC, the fracture toughness was measure from single-edge-notched tension test. The notched strength of GMC and NGMC was predicted together with the characteristic distance calculated from finite element analysis. The predicted results between GMC and NGMC was evaluated and compared.Based on the research results from GMC and NGMC, GMC composite with thermoplastic and paperboard reinforced thermoset composite was investigated to examine the applicability of previous results on other matrix or other mat reinforcement. The consistent analysis method was used here. | |||||||||
| 言語 | en | |||||||||
| 日付 | ||||||||||
| 日付 | 2014-03-25 | |||||||||
| 日付タイプ | Issued | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第711号 | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士（学術） | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2014-03-25 | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 14303 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 京都工芸繊維大学 | |||||||||
