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地球低軌道環境および大気圏再突入環境における炭素繊維強化PEEK複合材料の熱膨張特性と熱化学的特性の研究
https://doi.org/10.18997/00007932
https://doi.org/10.18997/0000793270db40bb-bfde-44fd-ab97-1513bff35c0e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kou_k_509.pdf (7.3 MB)
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| Item type | 学位論文 = Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2020-10-20 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Study of Thermal Expansion Property and Thermochemical Performance of Carbon Fiber Reinforced PEEK Composite in LEO and Reentry Environment | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 地球低軌道環境および大気圏再突入環境における炭素繊維強化PEEK複合材料の熱膨張特性と熱化学的特性の研究 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Farhan Abdullah
× Farhan Abdullah
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Polymer matrix composite （PMC） has seen increased usage in the aerospace industry. PMC can be divided into carbon fiber reinforced plastic （CFRP） and carbon fiber reinforced thermoplastic （CFRTP）. CFRP is more commonly used in the aerospace industry but has some limitations compared to CFRTP. However, CFRTP is still new in the space sector and there is limited in-orbit data on the performance of CFRTP in the space environment. In the future, CFRTP can be locally produced using a 3D printer in space. However, there is limited information on the space performance of 3D printed CFRTP especially in the design of a heat shield. Therefore, this research focuses on the performance of a type of CFRTP known as carbon fiber/polyether ether ketone （CF/PEEK） in space and reentry environment. The goal of this research is to study the thermal expansion behavior of CF/PEEK in LEO using a material exposure experiment termed material mission （MM） and to study the thermochemical performance of 3D printed CF/PEEK in reentry environment by evaluating the temperature response and recession resistance of 3D printed CF/PEEK ablator material. To achieve the research goals, the following studies have been performed: 1. Development of an in-situ measurement experiment for measuring CTE of CF/PEEK samples in LEO. 2. Evaluation of the temperature response and recession resistance of 3D printed CF/PEEK ablator material. The thesis outline is the following: In Chapter 1, the general introduction, problem statement, research objectives, thesis outline and the contribution of this thesis are presented. In Chapter 2, brief background information related to this thesis is presented. An overview of the molecular structure, properties and application of PEEK in spacecraft is presented. Different categories of the space environment around LEO and beyond are briefly presented. Effects of atomic oxygen, UV radiation and thermal cycle on the performance of PMC and polymers in space are further discussed. Selected previous material science missions utilizing small satellite platforms are presented. Structural parts for spacecraft manufactured using 3D printing technology are briefly discussed. In Chapter 3, the in-situ measurement experiment for measuring CTE of CF/PEEK is described. The experiment is one of the payloads onboard the Ten-Koh satellite. This chapter presents the architecture, main components and the mission operation flow. The detailed procedure for ground tests to validate the MM system and to simulate LEO thermal cycle environment is presented. In Chapter 4, a brief overview of the ablative heat shield is presented. Initially, the procedure for exposing 3D printed CF/PEEK to thermal cycle and UV radiation is presented. Subsequently, this chapter describes the setup of tensile tests and arc heating tests to evaluate the mechanical, thermal and recession properties of 3D printed CF/PEEK ablator samples. In Chapter 5, in-depth ground tests and in-orbit results of MM are presented. The result of the ground test is divided into system validation tests and thermal cycle exposure tests. The in-orbit result included system performance and long term CTE measurement. A comparison between results from the ground test and in-orbit is presented. Discussions on issues related to the MM experiment and recommended future work and MM design improvements are also described. In Chapter 6, the results of the tensile and arc heating test of 3D printed CF/PEEK are described. The effect of thermal cycle, UV radiation and different heat flux on tensile strength and Young’s modulus are described based on tensile test results. Temperature response and recession behavior after exposure to thermal cycle, UV radiation and varying heat flux are presented using arc heating test results. A comparison of the temperature response and recession behavior of the test samples with non-3D printed ablator materials is also presented. In Chapter 7, the concluding remarks and recommended future work related to the present thesis work are presented. Analysis of the ground test data has shown the feasibility of the MM CTE measurement system. The CTE data exhibit a non-linear temperature dependence and varies between each sample. Strain gauge misalignment has been identified as the reason for the difference between each sample. A comparison of in-orbit data with ground tests revealed minor differences in CTE value over a range of temperatures. This was due to differences in the sample heating and cooling rate and strain gauge misalignment with respect to the fiber direction. Analysis of CTE data over four months showed no shift in CTE values and is consistent with previous ground tests. The MM experiment has demonstrated the ability to fill in the gaps between available ground test and in- orbit data regarding CF/PEEK dimensional stability performance in LEO. Moreover, MM proved the potential of a small satellite as a platform for conducting meaningful material science experiments. Subsequently, a new heat shield material made of 3D printed CF/PEEK was evaluated using tensile and arc heating test. The tensile test showed no significant change in tensile strength and Young’s modulus after exposure to thermal cycle and UV radiation. The arc heating test showed surface expansion for all samples because the surface expansion rate was more than the surface recession rate. The lower surface recession rate was due to the high activation energy for 3D CF/PEEK. Moreover, 3D CF/PEEK has the lowest mass loss rate compared to CFRP based ablators. However, the surface recession rate and mass loss rate were not significantly affected by the thermal cycle and UV radiation. Comparison of surface and in-depth temperature showed no significant difference after exposure to the thermal cycle and UV radiation. Overall, the 3D CF/PEEK material has demonstrated excellent recession resistance while maintaining mechanical properties when exposed to high temperature, thermal cycle and UV radiation. Consequently, 3D CF/PEEK can be considered as a viable heat shield material for the reentry environment. | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1 Introduction||2 Research Background||3 In-Situ Measurement Experiment of CTE for CF/PEEK in Leo||4 New Heat Shield Material Using 3d CF/PEEK||5 Results of Ten-Koh Material Mission Experiment||6 Evaluation Of 3d CF/PEEK Mechanical and Ablative Properties||7 Conclusions and Future Work | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号：工博甲第509号 学位授与年月日：令和2年9月25日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | PEEK | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | 3D Printing | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | CFRTP | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Thermal cycle | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Ultraviolet | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Heatshield | |||||||
| アドバイザー | ||||||||
| 浅海, 賢一 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第509号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2020-09-25 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 令和2年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00007932 | |||||||
| ID登録タイプ | JaLC | |||||||
