GOALI: Fundamental Understanding and Suppression of Microcracking in Three Dimensional Woven Composites During Curing

目标：对三维编织复合材料固化过程中微裂纹的基本理解和抑制

• 批准号: 1100409
• 负责人: Igor Tsukrov
• 金额: $ 43.79万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1100409&HistoricalAwards=false
• 关键词: GOALI; Fundamental; Understanding; Suppression; Microcracking

This Grant Opportunity for Academic Liaison with Industry (GOALI) project will provide fundamental understanding of how local stress concentrations and formation of damage during curing are related to the weave architecture and fabrication parameters of three-dimensional woven composites. Comprehensive numerical modeling tools to predict microcracking during matrix cure and under service conditions will be developed and validated by experiments. Experimental studies will be performed on the specimens specifically fabricated in industrial setting to support the modeling effort and gain a better understanding of the mechanisms of resin pocket cracking. They will include microstructure characterization using optical and SEM microscopy, microcomputed tomography, traditional mechanical testing, residual stress determination by material removal, and multiaxial stress tests on neat resin. Guidelines for safe design of three-dimensional woven composites will be proposed. Advances in understanding and modeling of microcracking in 3D woven composites during resin curing will lead to improvements in technology of manufacturing and ?tailoring? of these materials for various applications. Demonstrating that they can be produced free of microcracks with inexpensive resins will greatly expand their utilization in aerospace, automotive, ground transportation, wind energy, and recreational marine industries. The work will be conducted in close collaboration between the University of New Hampshire and Albany Engineered Composites, Inc., and will be disseminated through journal publications, conference presentations and two industrial workshops.

与工业联络（Goari）项目的学术联络机会的赠款机会将对固化过程中局部应力浓度和损害形成的基本了解与三维编织复合材料的编织建筑和制造参数有关。通过实验将开发和验证矩阵治疗期间和在服务条件下的微裂纹的全面数值建模工具。实验研究将对在工业环境中专门制造的标本进行，以支持建模工作，并更好地了解树脂口袋破裂的机制。它们将包括使用光学和SEM显微镜，微型层析成像，传统的机械测试，通过材料去除来确定残余应力以及对整齐树脂的多轴应力测试的微观结构表征。将提出三维编织复合材料的安全设计指南。在树脂固化过程中，在3D机织合材料中理解和建模的进步会导致制造技术和裁缝技术的改进吗？这些用于各种应用的材料。证明它们可以没有廉价的树脂而没有微裂纹的生产，这将大大扩展其在航空航天，汽车，地面运输，风能和休闲海洋工业中的利用。这项工作将在新罕布什尔大学和奥尔巴尼工程复合材料，Inc。之间密切合​​作进行，并通过期刊出版物，会议演讲和两个工业研讨会进行传播。