極低温用高分子材料システムの破壊・疲労機構解明とメゾ構造・界面制御に関する研究

低温高分子材料体系断裂/疲劳机制及细观结构/界面控制研究

• 批准号: 09J05475
• 负责人: 渡邉 慎也
• 金额: $ 1.28万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09J05475/
• 关键词: メゾ材料力学; 有限要素解析; 材料試験; 高分子系複合材料; 破壊・変形; 疲労; 航空宇宙システム; 超電導応用デバイス; 連続体力学; 破壊; 極低温デバイス

本研究は,極低温用高分子材料システムの設計法及び信頼性・耐久性評価法を開発することを目的に,異スケール間の相互干渉を考慮したメゾメカニックスに基づいて,極低温における高分子材料システムの破壊・疲労特性を理論・実験両面から解明するものである.前年度は,極低温用高分子材料システムにおけるき裂の熱弾性挙動や層間はく離破壊・疲労き裂進展挙動に注目し,理論的・実験的研究を行った.本年度は,前年度までの検討結果を踏まえ,新たな解析・実験を行った.得られた成果を要約すると以下の通りである.1.(1)内部・縁き裂を有する多層五本朱子織炭素繊維強化プラスチック(CFRP)積層材料の極低温引張問題を取り上げ,冷却残留熱応力を考慮した有限要素解析を高精度の特異要素を組み込んで行い,応力拡大係数を明らかにした.また,破断層き裂の特異挙動についても同様に考察を加えた.(2)擬似等方性五本朱子織CFRP積層材料の極低温引張問題に関する有限要素解析を行い,応力拡大係数に及ぼす積層構成・織構造の影響を解明した.(3)き裂を有する五本朱子織CFRP積層材料の三次元有限要素解析を行い,縦弾性係数及びき裂先端近傍応力に及ぼす残留熱応力・積層数の影響を明らかにした.2.円孔を有する平織ガラス繊維強化プラスチック(GFRP)・五本朱子織CFRP積層林料の極低温引張試験及び有限要素解析を行い,極低温引張試験中における試験片取り付け部でのすべりを防止して,極低温引張挙動解明に成功した.また,円孔近傍の損傷を考慮して引張強さを評価し,有孔試験片による新しい極低温引張強さ評価法を提案した.

In this study, the design method and reliability and durability evaluation method of polymer materials for extremely low temperature use were developed. Purpose, different mutual interference between different things, consideration, extremely low temperature, high score Sub-Material システムののである. Previous year は, extremely low Thermal elasticity of polymer materials for warm use, the cracking of thermal elasticity, the separation of layers between layers, the cracking progress of fatigue cracking, and the progress of crackingし, Theoretical and practical research is carried out. This year, the results of the previous year are discussed, and the new analysis is carried out.実験を行った.Get the results of the offer and the following の通りである.1. (1) Internal・縁き开を有するThe problem of ultra-low temperature tensioning of multi-layered five-dimensional carbon fiber reinforced polypropylene (CFRP) laminated materials has been solved. , the cooling residual heat energy is taken into consideration, the finite element analysis is a high-precision specific element group, and the heat energy is increased by a large coefficientを明らかにした.また, the special cleavage of the broken layer についても同様にinvestigation を加えた. (2) Simulation etc. The extremely low temperature tensile problem of CFRP laminated materials with square nature is analyzed by finite elements, and the coefficient of force is large.に和ぼすThe influence of the laminated composition and the weaving structure is explained. (3) The き cracked を有する五本毇子woven CFRP laminated materials The three-dimensional finite element analysis of the material is carried out, the elasticity coefficient and the crack tip proximity force and the residual thermal force and the number of layers areの Impact を明らかにした. 2. 円口 を有する平woven ガラス繊dimensional reinforced プラスチック(GFRP)・五This Zhu Ziwei CFRP laminated forest material's extremely low temperature tensile test and its finite element analysis are carried out, and the extremely low temperature tensile test is carried out. The test piece was taken out of the way to prevent it. The extremely low temperature induced tension and the solution was successful. The hole was close to the hole. Damage is considered, the test piece with a hole is new, the extreme low temperature is recommended, the evaluation method is proposed.

项目成果

Thermal-mechanical Analysis of Satin Weave CFRP Composites with Cracks at Cryogenic Temperatures

• DOI: 10.1177/0731684408089133
• 发表时间: 2009-01
• 期刊: Journal of Reinforced Plastics and Composites
• 影响因子: 3.1
• 作者: S. Watanabe;Y. Shindo;F. Narita;T. Takeda

Evaluation of Tensile Strength of Woven Carbon/Epoxy Composite Laminates at Cryogenic Temperatures using the Open Hole Specimens

使用开孔样品评估低温下编织碳/环氧复合材料层压板的拉伸强度

• 发表时间: 2011
• 期刊: ASTM Journal of Testing and Evaluation
• 作者: Muramoto H;Yagi S;Hirabayashi K;Sato S;Ohgane J;Tanaka S;Shiota K;村本玄紀;Yasuhide Shindo;Shinya Watanabe
• 通讯作者: Shinya Watanabe

Delamination growth mechanisms in woven glass fiber reinforced polymer composites under Mode II fatigue loading at cryogenic temperatures

• DOI: 10.1016/j.compscitech.2009.04.010
• 发表时间: 2009-09
• 期刊: Composites Science and Technology
• 影响因子: 9.1
• 作者: Y. Shindo;T. Takeda;F. Narita;N. Saito;S. Watanabe;K. Sanada

Characterization of Cryogenic Interlaminar Shear Strength of Composite Insulation Systems for Superconducting Magnets in Fusion Reactors

聚变反应堆超导磁体复合绝缘系统低温层间剪切强度表征

• 发表时间: 2009
• 作者: Muramoto H;Yagi S;Hirabayashi K;Sato S;Ohgane J;Tanaka S;Shiota K;村本玄紀;Yasuhide Shindo;Shinya Watanabe;Shinya Watanabe;Yasuhide Shindo;Shinya Watanabe;Masaya Miura;Yasuhide Shindo;進藤裕英;渡邉慎也;Yasuhide Shindo;渡邉慎也;Tomo Takeda;Masaya Miura
• 通讯作者: Masaya Miura

Numerical and Experimental Evaluation of Cryogenic Tensile Strength of Woven Fabric-reinforced Glass/Epoxy Composites using the Open Hole Specimens

使用开孔样品对织物增强玻璃/环氧树脂复合材料的低温拉伸强度进行数值和实验评估

• 发表时间: 2011
• 期刊: Journal of Mechanics of Materials and Structures
• 影响因子: 0.9
• 作者: Muramoto H;Yagi S;Hirabayashi K;Sato S;Ohgane J;Tanaka S;Shiota K;村本玄紀;Yasuhide Shindo
• 通讯作者: Yasuhide Shindo