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Restoration of Strength in Polyamide Woven Glass Fiber Organosheets by Hot Pressing: Case Study of Impact and Compression after Impact.
Saquib, Mohammad Nazmus; Chaparro-Chavez, Edwing; Morris, Christopher; Çelebi, Kuthan; Pedrazzoli, Diego; Zhang, Mingfu; Kravchenko, Sergii G; Kravchenko, Oleksandr G.
Afiliación
  • Saquib MN; Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA.
  • Chaparro-Chavez E; Johns-Manville Corp., Denver, CO 80202, USA.
  • Morris C; Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA.
  • Çelebi K; Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
  • Pedrazzoli D; Johns-Manville Corp., Denver, CO 80202, USA.
  • Zhang M; Johns-Manville Corp., Denver, CO 80202, USA.
  • Kravchenko SG; Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
  • Kravchenko OG; Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA.
Polymers (Basel) ; 16(15)2024 Aug 05.
Article en En | MEDLINE | ID: mdl-39125249
ABSTRACT
Thermoplastic composite organosheets (OSs) are increasingly recognized as a viable solution for automotive and aerospace structures, offering a range of benefits including cost-effectiveness through high-rate production, lightweight design, impact resistance, formability, and recyclability. This study examines the impact response, post-impact strength evaluation, and hot-pressing repair effectiveness of woven glass fiber nylon composite OSs across varying impact energy levels. Experimental investigations involved subjecting composite specimens to impact at varying energy levels using a drop-tower test rig, followed by compression-after-impact (CAI) tests. The results underscore the exceptional damage tolerance and improved residual compressive strength of the OSs compared to traditional thermoset composites. This enhancement was primarily attributed to the matrix's ductility, which mitigated transverse crack propagation and significantly increased the amount of absorbed energy. To mitigate impact-induced damage, a localized hot-pressing repair approach was developed. This allowed to restore the post-impact strength of the OSs to pristine levels for impact energies below 40 J and by 83.6% for higher impact energies, when OS perforation was observed. The measured levels of post-repair strength demonstrate a successful restoration of OS strength over a wide range of impact energies, and despite limitations in achieving complete strength recovery above 40 J, hot-pressing repair emerges as a promising strategy for ensuring the longevity of thermoplastic composites through repairability.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Suiza