In this section
@article{Gao:2027:10.1016/j.compositesb.2026.114254,
author = {Gao, C and Blackman, B and Ding, Z and Li, N},
doi = {10.1016/j.compositesb.2026.114254},
journal = {Composites Part B Engineering},
title = {Isothermal and non-isothermal friction at thermoplastic composite interfaces},
url = {http://dx.doi.org/10.1016/j.compositesb.2026.114254},
volume = {329},
year = {2027}
}
TY - JOUR
AB - Interfacial friction plays a critical role in thermoplastic composite forming, and the governing mechanisms depend on the interface type and thermo-mechanical conditions. In this study, interfacial friction in a CF/PA6 system was experimentally characterised under isothermal and non-isothermal conditions using a newly developed pull-through rig with independently controlled normal pressure, temperature, slip-rate and fibre orientation. The investigated interfaces included two ply-ply interfaces, namely woven-woven and UD-woven, and two metal-ply interfaces, namely UD-aluminium and UD-steel. Woven-woven contact was examined as a fully molten interface under isothermal conditions, whereas UD-woven, UD-aluminium and UD-steel contacts were examined under non-isothermal conditions to demonstrate the methodology for characterising diverse interface configurations and thermal states. Under isothermal conditions, woven-woven friction exhibited systematic dependencies on pressure, temperature and slip-rate, consistent with viscous lubrication behaviour. Under non-isothermal conditions, the friction response became interface dependent. For the UD-woven interface, friction depended on the individual pre-contact temperatures of the UD and woven plies, as different temperature pairs with the same average temperature produced different friction levels. In contrast, the UD-aluminium and UD-steel interfaces exhibited limited temperature sensitivity within the tested range. Phenomenological friction models were formulated and calibrated for the four interface types. The calibrated models reproduce the measured parameter trends and provide consistent early-stage and dynamic friction descriptions within a common modelling framework. The study establishes an integrated experimental and modelling framework for interfacial friction characterisation under isothermal and non-isothermal conditions, which can be extended to other thermoplastic composite systems and can provide a basis for si
AU - Gao,C
AU - Blackman,B
AU - Ding,Z
AU - Li,N
DO - 10.1016/j.compositesb.2026.114254
PY - 2027///
SN - 1359-8368
TI - Isothermal and non-isothermal friction at thermoplastic composite interfaces
T2 - Composites Part B Engineering
UR - http://dx.doi.org/10.1016/j.compositesb.2026.114254
VL - 329
ER -