Complex Mechanics of Advanced Composite Materials Evolving from Computational Image Diagnosis

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Kyoto University
• Principal Investigator: Masaki Hojo 京都大学, 工学(系)研究科(研究院), 教授 (70252492)
• Co-Investigator(Kenkyū-buntansha): NISHIKAWA Masaaki 京都大学, 大学院工学研究科, 准教授 (60512085) ; MATSUDA Naoki 京都大学, 大学院工学研究科, 助教 (90756818)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 計算画像診断 / 先進複合材料 / 複雑系マイクロメカニクス / 力学微視構造 / サーモグラフィ / 変形評価

Outline of Final Research Achievements

For improving the manufacturing process of composite structures, it is essential to evaluate three-dimensional microscopic deformation that depends on mechanical microstructures consisting of fibers and polymer matrix, and to optimize the microstructures of composites from viewpoints of the reduction of manufacturing-induced residual stress and the enhancement of composite strength and durability. For this purpose, we established a method to evaluate fatigue damage progress of composites based on infrared thermography and a method to evaluate local deformation caused by preforming process of woven fabrics based on image-based measurements. Utilizing the methods, we clarified micromechanical factors which influence the fatigue damage process of materials and forming process of preforms. Furthermore, we presented fiber-based simulations to analyze macroscopic mechanical properties of composite materials considering micromechanical information including fiber architecture in composites.

Free Research Field

先進材料強度学