Assessment of the ablation characteristics of carbon/phenolic composites using X-ray microtomography

被引：35

作者：

Cheon, Jae Hee ^{[1
]}

Shin, Eui Sup ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Dept Aerosp Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2019年 / 182卷

基金：

新加坡国家研究基金会;

关键词：

Polymer-matrix composites (PMCs); porosity/voids; X-ray microtomography; THERMAL PROTECTION SYSTEMS; PLASMA WIND-TUNNEL; QUANTITATIVE-ANALYSIS; DEGRADATION BEHAVIOR; CARBON COMPOSITE; PHENOLIC RESIN; DENSITY; MECHANISMS; PYROLYSIS; ABLATORS;

D O I：

10.1016/j.compscitech.2019.107740

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this study, the ablation characteristics of carbon/phenolic composites were evaluated using X-ray micro tomography. The ablation tests of carbon/phenolic composites were performed using a 0.4 MW arc-heated wind tunnel, and the composite samples were scanned using micro-computed tomography (Micro-CT) to analyze the ablation characteristics according to the duration of the ablation test. Through calibration of the scanned raw images, 2,000 cross-sectional images were generated with micrometer level intervals. Using these obtained cross-sectional images, the porosity and density distributions in the longitudinal direction of the samples were calculated. The mass was then calculated using the analyzed porosity and density, and gave an error of 0.1-3.4% compared to the mass measured using an electronic balance. Our observations indicate that the physical properties of carbon/phenolic composite samples can be calculated using X-ray microtomography, and we expect that our results will be useful in analyzing the behavior of ablative composites.

引用

页数：6

共 35 条

[1] Ablation and thermal degradation behaviour of a composite based on resol type phenolic resin: Process modeling and experimental [J].