In this section
@article{Gao:2027:10.1016/j.compositesb.2026.114187,
author = {Gao, C and Tran, J and Ding, Z and Blackman, B and Li, N},
doi = {10.1016/j.compositesb.2026.114187},
journal = {Composites Part B: Engineering},
title = {Cohesive-friction transition in compressed unidirectional thermoplastic composite interfaces},
url = {http://dx.doi.org/10.1016/j.compositesb.2026.114187},
volume = {328},
year = {2027}
}
TY - JOUR
AB - Thermoplastic composite interfaces can transfer shear through cohesive bonding before local separation. After cohesive load transfer is lost, the separated surfaces may still remain in compressive contact and resist sliding through friction. These two regimes are often characterised separately, although they can occur sequentially at the same compressed interface during thermomechanical processing. Here, a matched debonding-sliding dataset is used to define a cohesive-friction transition law for compressed UD CF/PA6 interfaces. A predefined 0°/90° interlaminar interface is used to identify the apparent nominal shear traction-separation response, while 0°/0° and 0°/90° UD ply contacts are used to quantify residual sliding resistance under controlled and overlapping pressure, temperature and rate conditions. Within the investigated parameter ranges, the apparent cohesive response showed clear changes with normal pressure, temperature and loading rate, whereas the contact-mediated sliding response showed more pronounced changes with normal pressure and fibre orientation than with temperature and loading rate over the tested below-melting window of 190–210°C. A bilinear cohesive law, a pressure-dependent friction law and a damage-controlled transition formulation are then combined to describe the transfer from cohesive load carrying to residual contact-mediated sliding resistance under compression. The resulting formulation provides a calibrated interface-level description of the debonding-sliding branch and a basis for future forming-relevant assessment of damaged compressed thermoplastic composite interfaces.
AU - Gao,C
AU - Tran,J
AU - Ding,Z
AU - Blackman,B
AU - Li,N
DO - 10.1016/j.compositesb.2026.114187
PY - 2027///
SN - 1359-8368
TI - Cohesive-friction transition in compressed unidirectional thermoplastic composite interfaces
T2 - Composites Part B: Engineering
UR - http://dx.doi.org/10.1016/j.compositesb.2026.114187
UR - https://doi.org/10.1016/j.compositesb.2026.114187
VL - 328
ER -