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Investigating Interfaces in Thermosetting and Thermoplastic Composites
Investigating Interfaces in Thermosetting and Thermoplastic Composites
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153110
- ISBN
- 9798896076339
- DDC
- 536
- 저자명
- Koirala, Pratik.
- 서명/저자
- Investigating Interfaces in Thermosetting and Thermoplastic Composites
- 발행사항
- [Sl] : The University of Texas at Austin, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 172 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
- 주기사항
- Advisor: Tehrani, Mehran.
- 학위논문주기
- Thesis (Ph.D.)--The University of Texas at Austin, 2024.
- 초록/해제
- 요약Carbon fiber reinforced polymer composites (CFRP) have become an integral part of various industries, including aerospace, automotive, and energy, due to their remarkable mechanical properties, thermal stability, and light weight. Performance of CFRPs relies significantly on interfacial interactions between plies as well as fibers and the polymer matrix, however, there is still a lack of understanding of the role interfaces play on structure, failure, and fracture in CFRPs. To address this, this dissertation attempts to address two problems: 1) poor interlaminar interfaces in thermosetting composites and 2) role of interfaces and interphases on bonding strength and fracture toughness in thermoplastic composites (TPC). For the first problem, a systematic study on incorporating thin carbon nanotube (CNT) sheets at interlaminar interfaces in composites is conducted. The second problem is tackled by investigating the multi-scale mechanics of interlaminar (between laminates) and interfacial (between fiber and matrix) strength and fracture toughness in TPCs. Specifically, nano, micro, and meso-scale mechanical measurements are complemented with finite element analysis (FEA) to understand the correlations between processing, micro-structure, and multi-scale mechanics in rapid TPC processes. Lastly, effects of processing parameters on in the through thickness crystallinity and interface formation of in situ consolidated, automated fiber placement (AFP) thermoplastic composites are investigated. Finally, the collective knowledge garnered though this dissertation is utilized to link the interfacial properties to the fracture and failure of the bulk composites. This research provides new insights for developing high-performance composites by providing a detailed understanding of their interfacial and multi-scale mechanics.
- 일반주제명
- Thermodynamics
- 일반주제명
- Materials science
- 일반주제명
- Mechanics
- 일반주제명
- Nanoscience
- 키워드
- Carbon nanotube
- 기타저자
- The University of Texas at Austin Mechanical Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211153110
■006m o d
■007cr#unu||||||||
■020 ▼a9798896076339
■035 ▼a(MiAaPQ)AAI31690630
■035 ▼a(MiAaPQ)123vireo24620Koirala
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a536
■1001 ▼aKoirala, Pratik.
■24510▼aInvestigating Interfaces in Thermosetting and Thermoplastic Composites
■260 ▼a[Sl]▼bThe University of Texas at Austin▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a172 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-05, Section: B.
■500 ▼aAdvisor: Tehrani, Mehran.
■5021 ▼aThesis (Ph.D.)--The University of Texas at Austin, 2024.
■520 ▼aCarbon fiber reinforced polymer composites (CFRP) have become an integral part of various industries, including aerospace, automotive, and energy, due to their remarkable mechanical properties, thermal stability, and light weight. Performance of CFRPs relies significantly on interfacial interactions between plies as well as fibers and the polymer matrix, however, there is still a lack of understanding of the role interfaces play on structure, failure, and fracture in CFRPs. To address this, this dissertation attempts to address two problems: 1) poor interlaminar interfaces in thermosetting composites and 2) role of interfaces and interphases on bonding strength and fracture toughness in thermoplastic composites (TPC). For the first problem, a systematic study on incorporating thin carbon nanotube (CNT) sheets at interlaminar interfaces in composites is conducted. The second problem is tackled by investigating the multi-scale mechanics of interlaminar (between laminates) and interfacial (between fiber and matrix) strength and fracture toughness in TPCs. Specifically, nano, micro, and meso-scale mechanical measurements are complemented with finite element analysis (FEA) to understand the correlations between processing, micro-structure, and multi-scale mechanics in rapid TPC processes. Lastly, effects of processing parameters on in the through thickness crystallinity and interface formation of in situ consolidated, automated fiber placement (AFP) thermoplastic composites are investigated. Finally, the collective knowledge garnered though this dissertation is utilized to link the interfacial properties to the fracture and failure of the bulk composites. This research provides new insights for developing high-performance composites by providing a detailed understanding of their interfacial and multi-scale mechanics.
■590 ▼aSchool code: 0227.
■650 4▼aThermodynamics
■650 4▼aMaterials science
■650 4▼aMechanics
■650 4▼aNanoscience
■653 ▼aCarbon fiber reinforced polymer composites
■653 ▼aThermoplastic composites
■653 ▼aCarbon nanotube
■653 ▼aFinite element analysis
■653 ▼aMechanical properties
■690 ▼a0565
■690 ▼a0346
■690 ▼a0794
■690 ▼a0348
■71020▼aThe University of Texas at Austin▼bMechanical Engineering.
■7730 ▼tDissertations Abstracts International▼g86-05B.
■790 ▼a0227
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164982▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
