Low velocity impact behaviour of filament-wound GFRP tubes: Combined effects of winding angle and layer number supported by a Hashin-based cohesive finite element model
Composite Structures, cilt.397, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 397
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.compstruct.2026.120869
- Dergi Adı: Composite Structures
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chimica, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Filament winding, GFRP composite tube, Hashin damage, Laminate thickness, Low-velocity impact (LVI), Surface-based cohesive interaction, Winding angle
- Recep Tayyip Erdoğan Üniversitesi Adresli: Hayır
Özet
This study investigates the combined influence of winding angle and laminate thickness on the low-velocity impact (LVI) response of filament-wound glass fiber reinforced polymer (GFRP) tubes. Fifteen configurations of Ø72 mm E-glass/epoxy tubes were manufactured by wet filament winding at five winding angles (±30°, ±45°, ±55°, ±75° and ± 90°) and three layer counts (2, 4 and 6). Each configuration was tested in three replicates under drop-weight impact at 2 m/s and 11.2 J following ASTM D7136, in a V-shaped fixture adapted for tubular specimens. Peak contact force, contact duration and absorbed energy are reported as mean ± standard deviation, and a two-way ANOVA provides an indicative assessment of the effects given the limited replicate number. Damage was characterised by optical microscopy and SEM, and a projected visible damage area from inner-surface photographs was used to define a specific absorbed-energy density for the six-layer tubes. A three-dimensional Abaqus/Explicit model built from stacked S4R shells connected by surface-based cohesive interaction at three internal interfaces, with intralaminar Hashin damage, reproduced the six-layer peak forces to within − 3.3 % to + 2.6 % (R2 = 0.99). Layer number controls the peak force and contact duration, whereas winding angle governs the dominant damage mechanism and the absorbed energy. Among the six-layer tubes the ± 90° configuration gave the highest peak force, the ± 75° the largest absorbed energy and the ± 55° the most distributed damage, so that ± 55° may be preferred when distributed damage is favoured over localised concentration. The 2-layer ± 30° and ± 90° tubes failed by structural instability, namely axial buckling and indentation-driven penetration, and are reported separately from the stable-laminate trends.