Scopus
YÖKSİS Eşleşti
Dynamic characterization and damage analysis for the thermoplastic fiber-reinforced epoxy composites exposed to repeated low velocity impact
Journal of Thermoplastic Composite Materials · Eylül 2024
YÖKSİS Kayıtları
Dynamic characterization and damage analysis for the thermoplastic fiber-reinforced epoxy composites exposed to repeated low velocity impact
Journal of Thermoplastic Composite Materials · 2024 SCI-Expanded
ARAŞTIRMA GÖREVLİSİ BETÜL SÖZEN COŞKUN →
Makale Bilgileri
DergiJournal of Thermoplastic Composite Materials
Yayın TarihiEylül 2024
Cilt / Sayfa37 · 3012-3035
Scopus ID2-s2.0-85180504406
Özet
In the current study, contrary to conventional fiber-reinforced composites, polyamide fiber was used as reinforcement material, and the effects of thermoplastic fiber reinforcement on repeated low velocity impact (LVI) responses of composites were examined. In this regard, polyamide fiber-reinforced composites were fabricated using the vacuum-assisted hand lay-up method (VAHLM) and then exposed to repeated LVI loadings. Experimental tests were performed on the specimens for 100 impacts with a constant velocity of 3 m/s, which is equivalent to 25.2 J, and the impacts of repeated LVI loadings on the dynamic responses such as peak force, energy absorbing/rebounding, total impulse, bending stiffness and contact stiffness were examined. Moreover, the damage mechanisms resulting from the relative damage accumulation depending on the impact numbers were examined. According to the findings, the thermoplastic polyamide fibers absorbed more than 60% of the applied energy, and the absorbed energy increased with ascending impact number. Furthermore, the thermoplastic fiber-reinforced epoxy composites gained stiffness with increasing impact, which was linked to the thermoplastic chain structure. Despite quite a number of impact loadings, no serious damage mechanisms such as fiber breakage, perforation, or penetration were observed, and the specimens maintained their structural integrity. Due to the higher energy absorption of thermoplastics, the utilization of polyamide fibers in composites has been found to be well suited for applications subjected to repeated impacts.
Yazarlar (3)
1
Betul Sozen
2
Taner Coskun
ORCID: 0000-0002-4815-9278
3
Ömer Sinan Şahin
Anahtar Kelimeler
damage mechanism
energy absorbing capacity
polyamide fabric
Repeated low velocity impact
thermoplastic
Kurumlar
Konya Technical University
Konya Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
4
Atıf
3
Yazar
5
Anahtar Kelime