Abstract:Fiber reinforcement and polymer matrix respond differently to manufacturing conditions due to mismatch in coefficient of thermal expansion and matrix shrinkage during curing of thermosets. These heterogeneities generate residual stresses over multiple length scales, whose partial release leads to process-induced deformation (PID), requiring accurate prediction and mitigation via optimized non-isothermal cure cycles. This study considers a unidirectional AS4 carbon fiber/amine bi-functional epoxy prepreg and models PID using a two-mechanism framework that accounts for thermal expansion/shrinkage and cure shrinkage. The model is validated against manufacturing trials to identify initial and boundary conditions, then used to generate PID responses for a diverse set of non-isothermal cure cycles (time-temperature profiles). Building on this physics-based foundation, we develop a data-driven surrogate based on Deep Operator Networks (DeepONets). A DeepONet is trained on a dataset combining high-fidelity simulations with targeted experimental measurements of PID. We extend this to a Feature-wise Linear Modulation (FiLM) DeepONet, where branch-network features are modulated by external parameters, including the initial degree of cure, enabling prediction of time histories of degree of cure, viscosity, and deformation. Because experimental data are available only at limited time instances (for example, final deformation), we use transfer learning: simulation-trained trunk and branch networks are fixed and only the final layer is updated using measured final deformation. Finally, we augment the framework with Ensemble Kalman Inversion (EKI) to quantify uncertainty under experimental conditions and to support optimization of cure schedules for reduced PID in composites.
| Comments: | 21 pages, 13 figures |
| Subjects: | Computational Engineering, Finance, and Science (cs.CE); Materials Science (cond-mat.mtrl-sci); Machine Learning (cs.LG) |
| Cite as: | arXiv:2512.13746 [cs.CE] |
| (or arXiv:2512.13746v5 [cs.CE] for this version) | |
| https://doi.org/10.48550/arXiv.2512.13746 arXiv-issued DOI via DataCite |
From: Elham Kianiharchegani [view email]
[v1]
Mon, 15 Dec 2025 03:04:45 UTC (9,128 KB)
[v2]
Thu, 18 Dec 2025 03:28:55 UTC (9,127 KB)
[v3]
Tue, 3 Feb 2026 15:46:25 UTC (9,127 KB)
[v4]
Wed, 8 Apr 2026 15:00:20 UTC (9,130 KB)
[v5]
Fri, 1 May 2026 14:40:04 UTC (9,192 KB)
此内容由惯性聚合(RSS阅读器)自动聚合整理，仅供阅读参考。 原文来自 — 版权归原作者所有。