Energy-Dependent Response and Multiscale Damage of Hybrid Unidirectional-Tape/Woven-Fabric Composite Laminates Under Low-Velocity Impact: Experimental Characterization and Numerical Analysis
- 1School of Aviation Engineering, , Xi’an 710038, China; (Y.F.);
- 2School of Ordnance Science and Technology, , Xi’an 710021, China
Abstract
Despite growing interest in hybrid unidirectional-tape/woven-fabric (UD/WF) composite laminates, the relationship between impact energy, macroscopic response, and multiscale damage evolution under low-velocity impact remains insufficiently understood. To address this issue, hybrid UD/WF composite laminates were investigated under low-velocity impacts of 10, 17, and 25 J through experiments and numerical simulations. Phased-array ultrasonic testing, micro-computed tomography (μCT), and cross-sectional microscopy were used to characterize multiscale damage, while a continuum-damage-mechanics-based progressive damage model was developed to capture intralaminar failure in the UD and woven-fabric plies and interlaminar delamination. The results showed a clear energy dependence of the impact response. The Hertzian failure load varied only slightly with impact energy, whereas the peak load, maximum displacement, and dissipated energy increased from 5.47 kN, 3.77 mm, and 1.91 J at 10 J to 10.08 kN, 5.51 mm, and 5.33 J at 25 J, respectively. Increasing impact energy intensified surface indentation and matrix cracking along the warp and weft directions. The projected delamination area increased from 484.15 mm2 at 10 J to 923.78 mm2 at 17 J and 987.70 mm2 at 25 J, indicating a reduced rate of in-plane delamination growth at higher energies. Notably, from 17 to 25 J, the dissipated energy nearly doubled, whereas the projected delamination area increased by only 6.9%, indicating that the increase in energy dissipation was not accompanied by a proportional increase in the in-plane extent of delamination. At 25 J, internal damage was concentrated near the impact region and was dominated by delamination and matrix cracking, with no extensive fiber fracture in the UD plies. The numerical model reproduced the global impact response, indentation depth, and delamination extent with reasonable accuracy and further revealed nonuniform attenuation of delamination through the laminate thickness. These findings clarify the non-proportional evolution of energy dissipation and in-plane delamination growth with increasing impact energy and provide a basis for impact damage assessment and impact-resistant design of hybrid UD/WF laminates.
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BibTeX
@article{feng2026energydependent,
title = {{Energy-Dependent Response and Multiscale Damage of Hybrid Unidirectional-Tape/Woven-Fabric Composite Laminates Under Low-Velocity Impact: Experimental Characterization and Numerical Analysis}},
author = {Yu Feng and Rui Shen and Qingqiang Zeng and Zhuogang Fu and Binlin Ma},
journal = {Polymers},
year = {2026},
month = oct,
doi = {10.3390/polym18192414},
url = {https://europepmc.org/article/PMC/PMC13666845},
note = {CC BY},
}
RIS
TY - JOUR
TI - Energy-Dependent Response and Multiscale Damage of Hybrid Unidirectional-Tape/Woven-Fabric Composite Laminates Under Low-Velocity Impact: Experimental Characterization and Numerical Analysis
AU - Yu Feng
AU - Rui Shen
AU - Qingqiang Zeng
AU - Zhuogang Fu
AU - Binlin Ma
PY - 2026
DA - 2026/10/01
JO - Polymers
DO - 10.3390/polym18192414
UR - https://europepmc.org/article/PMC/PMC13666845
AB - Despite growing interest in hybrid unidirectional-tape/woven-fabric (UD/WF) composite laminates, the relationship between impact energy, macroscopic response, and multiscale damage evolution under low-velocity impact remains insufficiently understood. To address this issue, hybrid UD/WF composite laminates were investigated under low-velocity impacts of 10, 17, and 25 J through experiments and numerical simulations. Phased-array ultrasonic testing, micro-computed tomography (μCT), and cross-sectional microscopy were used to characterize multiscale damage, while a continuum-damage-mechanics-based progressive damage model was developed to capture intralaminar failure in the UD and woven-fabric plies and interlaminar delamination. The results showed a clear energy dependence of the impact response. The Hertzian failure load varied only slightly with impact energy, whereas the peak load, maximum displacement, and dissipated energy increased from 5.47 kN, 3.77 mm, and 1.91 J at 10 J to 10.08 kN, 5.51 mm, and 5.33 J at 25 J, respectively. Increasing impact energy intensified surface indentation and matrix cracking along the warp and weft directions. The projected delamination area increased from 484.15 mm2 at 10 J to 923.78 mm2 at 17 J and 987.70 mm2 at 25 J, indicating a reduced rate of in-plane delamination growth at higher energies. Notably, from 17 to 25 J, the dissipated energy nearly doubled, whereas the projected delamination area increased by only 6.9%, indicating that the increase in energy dissipation was not accompanied by a proportional increase in the in-plane extent of delamination. At 25 J, internal damage was concentrated near the impact region and was dominated by delamination and matrix cracking, with no extensive fiber fracture in the UD plies. The numerical model reproduced the global impact response, indentation depth, and delamination extent with reasonable accuracy and further revealed nonuniform attenuation of delamination through the laminate thickness. These findings clarify the non-proportional evolution of energy dissipation and in-plane delamination growth with increasing impact energy and provide a basis for impact damage assessment and impact-resistant design of hybrid UD/WF laminates.
SN - 2073-4360
ER -