Version 1
: Received: 19 March 2024 / Approved: 19 March 2024 / Online: 19 March 2024 (14:43:03 CET)
How to cite:
Zhang, T.; Luo, Z.; Deng, J.; Cheng, X. A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process. Preprints2024, 2024031160. https://doi.org/10.20944/preprints202403.1160.v1
Zhang, T.; Luo, Z.; Deng, J.; Cheng, X. A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process. Preprints 2024, 2024031160. https://doi.org/10.20944/preprints202403.1160.v1
Zhang, T.; Luo, Z.; Deng, J.; Cheng, X. A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process. Preprints2024, 2024031160. https://doi.org/10.20944/preprints202403.1160.v1
APA Style
Zhang, T., Luo, Z., Deng, J., & Cheng, X. (2024). A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process. Preprints. https://doi.org/10.20944/preprints202403.1160.v1
Chicago/Turabian Style
Zhang, T., Jinxin Deng and Xiaoquan Cheng. 2024 "A Novel Preparation Method of Composite Bolted T-joint with High Bending Performance Based on Prepreg-RTM Co-Curing Process" Preprints. https://doi.org/10.20944/preprints202403.1160.v1
Abstract
A co-curing resin system consisting of 9368 epoxy resin for prepreg and 6808 epoxy resin for resin transfer molding (RTM) was developed. A corresponding preparation method of novel polymer composite bolted T-joint with internal skeleton and external skin was proposed based on prepreg-RTM co-curing process, and novel T-joints were fabricated. A series of conventional configuration T-joints based on RTM process and T-joints made of 2A12 aluminum alloy were prepared simultaneously. Bending performances were studied on these T-joints experimentally. The results indicate that 9368 epoxy resin and 6808 epoxy resin exhibit good compatibility in rheological and thermophysical properties. The novel T-joints prepared with prepreg-RTM co-curing process show no obvious fiber local winding or resin-rich regions inside, and the interface quality between internal skeleton and external skin is excellent. The main failure modes of the novel T-joint under bending load include separation of skin and skeleton and fracture along the thickness on the base panel; the skeleton carries the main bending load, but there is still load transfer between external skin and internal skeleton through their interface. The internal damages of the novel T-joint are highly consistent with surface damages observed visually, facilitating the detection and timely discovery of damages. The initial stiffness, damage initiation load, and ultimate load of the novel T-joint are 1.65 times, 5.89 times, and 3.45 times that of conventional T-joint, respectively. When considering the influence of density, the relative initial stiffness and relative ultimate load of the novel T-joint are 1.44 times and 2.07 times that of aluminum alloy T-joint, respectively.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
