Micro-fracture behaviors of 3D needle punching fabric reinforced nanoporous phenolic composites based on in-situ X-ray

被引：0

作者：

Qian Z. ^{[1
]}

Cao Y. ^{[1
]}

Zhou Y. ^{[2
]}

Cai H. ^{[1
]}

Zhao X. ^{[2
]}

Wang P. ^{[1
]}

Hou M. ^{[2
]}

Chen B. ^{[1
]}

Niu B. ^{[1
]}

Zhang Y. ^{[1
]}

Long D. ^{[1
]}

机构：

[1] School of Chemical Engineering, East China University of Science and Technology, Shanghai

[2] Beijing Xinhang Mechanics & Electricity Equipment CO., LTD., Beijing

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 08期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

damage evolution; finite element analysis; in-situ Micro-CT; nanoporous resin; needling fabric;

D O I：

10.13801/j.cnki.fhclxb.20221014.005

中图分类号：

学科分类号：

摘要：

Alternately stacking needling technology is a straight forward way to prepare three-dimensional (3D) fabrics, but randomly needling process will bring great challenges to the damage evolution, mechanical analysis and property prediction. In this paper, the damage evolution of nanoporous phenolic composites reinforced by alternately stacking fiber felt and woven fabric was revealed by in-situ X-ray Micro-CT device. And the angle deflections of fiber were described quantitatively under the loading of axial tensile by automatic tracing of microtubule centerlines. Finally, based on the 3D reconstructed structure, a high-precision finite element analysis model was established, and the axial tension mechanical behavior analysis was carried out. The results show that the damage in composite starts from the outmost layer where the microcracks in the fiber felt mainly originate from the resin-rich zone in the needling area, while the microcracks in the woven fabric are among filaments in fiber bundle. Besides, the woven fabric can improve the toughness of composite by preventing the microcrack expanding into the inner. The fibers in composite will consistently deflect to the outside, showing the property of negative Poisson's ratio, avoiding the "neck contraction" phenomenon at the fracture. The finite element analysis agrees with the results of experiments. The methods and results in this paper can provide a precious reference for microscopic fracture analysis, property prediction and structural optimization of complex 3D composite. © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

页码：4460 / 4470

页数：10

共 28 条

[1] DONG Yanzhi, LIU Feng, YANG Changhao, Et al., Design and verification of the TPS of the circumlunar free return and reentry flight vehicle for the 3rd phase of Chinese lunar exploration program[J], Scientia Sinica (Technologica), 45, 2, pp. 151-159, (2015)
[2] NATALI M, KENNY J M, TORRE L., Science and technology of polymeric ablative materials for thermal protection systems and propulsion devices: A review[J], Progress in Materials Science, 84, pp. 192-275, (2016)
[3] CSP A, PRB B., Characterization of mechanical and thermal properties of high strength glass epoxy and rayon carbon phenolic composites, Materials Today: Proceedings, 5, 13, pp. 26898-26903, (2018)
[4] TRAN H, JOHNSON C, RASKY D, Et al., Phenolic impregnated carbon ablators (PICA) for discovery class missions, 31st Thermophysics Conference, (1996)
[5] MUNOZ R, MARTINEZ V, SKET F, Et al., Mechanical behavi- or and failure micromechanisms of hybrid 3D woven composites in tension[J], Composites Part A: Applied Science and Manufacturing, 59, pp. 93-104, (2014)
[6] ZHANG Hongyu, QIAN Zhen, NIU Bo, Et al., Mechanical properties and fracture mechanisms of low-density fiber preforms reinforced phenolic aerogel composites, Acta Materiae Compositae Sinica, 39, 8, pp. 3663-3673, (2022)
[7] XIE Junbo, Parametric modeling of needling process and constitutive relationship of needled composite, (2016)
[8] MCCORMICK N, LORD J., Digital image correlation[J], Materials Today, 13, 12, pp. 52-54, (2010)
[9] XIE J, LIANG J, FANG G, Et al., Effect of needling parameters on the effective properties of 3D needled C/C-SiC composites[J], Composites Science and Technology, 117, pp. 69-77, (2015)
[10] ZW A, SW B, GK A, Et al., In-situ synchrotron X-ray tomography investigation on damage mechanism of an extruded magnesium alloy in uniaxial low-cycle fatigue with ratchetting, Acta Materialia, 211, (2021)

← 1 2 3 →