Expanding engineering capabilities for technical & reinforcement textiles, towards novel applications

扩大技术工程能力

• 批准号: RGPIN-2020-04147
• 负责人: Robitaille, Francois
• 金额: $ 1.97万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716173
• 关键词: Expanding; engineering; capabilities; technical; reinforcement

Technical textiles (TTs) are advanced materials created through textile processes. Their unique properties arise from combining high performance synthetic fibres into complex textile structures. Reinforcement textiles (RTs) for composites are one example of TTs. Like all engineered materials, TTs must meet stringent performance metrics. However, TTs differ strongly from other materials: i) non-linear, non-elastic constitutive behaviour permitting large strains and displacements enable large changes in macroscale configuration; ii) variable microscale and mesoscale configurations strongly alter properties such as electric resistance; and iii) properties such as permeability to liquids are highly directional. Furthermore, variability in configuration at all scales leads to higher variability in performance. The central approach of this proposal is to expand fundamental knowledge related to the PI's area of expertise on technical textiles (TTs), well beyond more targeted and delimited questions arising from industrial textile composites manufacturing. The proposal builds on the PI's expertise and probes challenging questions that have received less attention. General applications are proposed and blue-sky collaborators are identified but the proposal is not related to any business case or TRL consideration. The work is articulated around 4 themes, related in that they explore links between textile structure and physical properties at the microscale, mesoscale and macroscale. All themes have an analytical foundation supported by experimental work. - Theme A: Large-scale deformations and configurations of textile structures with multiple constraints. - Theme B: Inspection of deformed carbon multilayer stacks using electrical resistive networks. - Theme C: High-speed flow of suspensions through structured porous media. - Theme D: Configuration of structural textiles and flexible composites under high tensile loads. The foremost impact of the program is the training of 12 HPQ working on emerging topics and applications through a wide variety of approaches, in a multidisciplinary context, along with blue-sky collaborators who embody the varied perspectives of different stakeholders. The program is further enhanced by the PI's enthusiastic commitment to active pursuit of EDI-related objectives as promoted under NSERC policy. The PI's previous Discovery grant targeted fundamental innovation primarily related to composites processing, notably IR probing of dry TR structures. The present Discovery proposal widens the scope of innovation much further, into emerging applications of highly loaded TRs, another new inspection method for dry carbon TRs, and specific challenges with no immediate application to composites. The proposal features themes that are distinct yet related, and it offers credible paths for reaching collaborators in different disciplines in the mid-term, and the wider community of TT researchers and engineers in the long-term.

技术纺织品（TT）是通过纺织工艺制造的先进材料。它们的独特性能来自于将高性能合成纤维结合成复杂的纺织结构。用于复合材料的增强织物（RT）是TT的一个例子。与所有工程材料一样，TT必须满足严格的性能指标。然而，TT与其他材料有很大的不同：i）允许大应变和位移的非线性、非弹性本构行为使得宏观尺度配置能够发生大的变化; ii）可变的微观尺度和中尺度配置强烈改变诸如电阻的性质;以及iii）诸如对液体的渗透性的性质是高度定向的。此外，在所有尺度下配置的可变性导致性能的更高可变性。 该提案的核心方法是扩大PI在技术纺织品（TT）专业领域的基础知识，远远超出工业纺织品复合材料制造中产生的更具针对性和限定性的问题。该提案以PI的专业知识为基础，并探讨了受到较少关注的挑战性问题。提出了一般应用程序，并确定了蓝天合作者，但该提案与任何业务案例或TRL考虑无关。这项工作围绕4个主题进行阐述，相关的是它们在微观，中观和宏观尺度上探索纺织品结构和物理特性之间的联系。所有的主题都有一个由实验工作支持的分析基础。 - 主题A：具有多约束的纺织结构的大规模变形和构型。 - 主题B：使用电阻网络检查变形碳多层堆。 - 主题C：悬浮液通过结构多孔介质的高速流动。 - 主题D：高拉伸载荷下结构纺织品和柔性复合材料的构型。 该计划的最大影响是通过多种方法，在多学科背景下，与体现不同利益相关者不同观点的蓝天合作者沿着，对12个HPQ进行新兴主题和应用的培训。该方案进一步加强了PI的热情承诺，积极追求教育发展信息相关的目标，根据NSERC政策的促进。 PI之前的发现资助针对的是主要与复合材料加工相关的基础性创新，特别是干TR结构的红外探测。目前的Discovery提案进一步扩大了创新范围，进入高负载TR的新兴应用，另一种新的干碳TR检测方法，以及没有立即应用于复合材料的特定挑战。该建议的特点是主题不同但又相互关联，它为中期接触不同学科的合作者和长期接触更广泛的技术转让研究人员和工程师提供了可靠的途径。