Hyper-Frequency Viscoelastic Spectroscopy for Advanced Composites and Biomaterials

先进复合材料和生物材料的高频粘弹性光谱

• 批准号: RTI-2017-00114
• 负责人: Zhao, Boxin
• 金额: $ 8.58万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=616558
• 关键词: Hyper; Frequency; Viscoelastic; Spectroscopy; Advanced

The modification of viscoelastic materials to meet engineering specifications is often based on a trial-and-error approach because there is a lack of understanding of their dynamic behavior at solid states. The novel technique enabled by the proposed equipment will enable an in-depth study of these behaviors, not possible through existing techniques, allowing us to modify materials to the extent required for high-end applications in advanced materials and manufacturing sectors (e.g. electronics, automotive, aerospace, healthcare.) We request funding for a hyper-frequency viscoelastic spectroscopy (HFVS) instrument, which will enable us to perform a newly-developed technique for the contactless and non-destructive mechanical characterization of advanced composites and biomaterials under dynamic conditions. Dynamic mechanical characterization is essential to the applicants’ research programs investigating advanced composites tailored at micro/nano scales and biomaterials including soft hydrogels, biological tissues, biofilms, smart adhesive, foods, rigid bone-like materials, rubbers, and structural composites in the fields of chemical engineering, mechanical engineering, system design engineering, and chemistry. However, our current capabilities are destructive, time-consuming, and limited in terms of the testing ranges of elastic modules and excitation frequency range, which prevents us from acquiring in-depth scientific insights for modification of the viscoelastic properties of our materials. Contactless and ultrafast measurements are ideally suited for materials that are fragile and time-sensitive, such as hydrogels, biofilm, and adhesive micro/nano structure. The proposed equipment will greatly enhance a number of on-going research programs by (a) enabling characterization of dynamic mechanical properties of a variety of materials (both biological and synthetic) with a range of viscoelasticities, (b) enabling study of the behavior of multifunctional architectured materials (biomimetic materials and 3D-printed architectures), (c) addressing a critical need for advancing computational modeling and simulation of advanced materials used in vehicles for the protection of humans in car collisions. These capabilities will allow us to perform research at the forefront of the field and boost our world-class programs to the next level of sophistication. This state-of-art equipment is highly versatile, and has vast potential for unique training opportunities to our graduate students and researchers. During the lifetime of the instrument, it is expected that >400 HQP will be trained in measuring the dynamic mechanical properties of composites and biomaterials. These knowledge and skills are in high demand in such manufacturing sectors as electronics, automotive, aerospace, biomedical and healthcare materials.

粘弹性材料的修改以满足工程规范通常是基于试错法，因为缺乏对它们在固体状态下的动态行为的了解。由拟议设备实现的新技术将使我们能够深入研究这些行为，这是现有技术无法实现的，使我们能够修改材料，达到先进材料和制造行业(例如电子、汽车、航空航天、医疗保健)高端应用所需的程度。我们请求资助一台超高频粘弹性光谱仪(HFVS)，这将使我们能够执行一项新开发的技术，用于在动态条件下对先进复合材料和生物材料进行非接触式和非破坏性的机械表征。 动态力学特性对于申请人研究微米/纳米尺度的先进复合材料和生物材料至关重要，这些材料包括化学工程、机械工程、系统设计工程和化学领域的软水凝胶、生物组织、生物膜、智能粘合剂、食品、硬骨材料、橡胶和结构复合材料。然而，我们目前的能力是破坏性的、耗时的，而且在弹性模块的测试范围和激励频率范围方面是有限的，这阻碍了我们对材料粘弹性性质的修改获得深入的科学见解。非接触式和超快测量非常适合于易碎和时间敏感的材料，如水凝胶、生物膜和粘附性微/纳米结构。拟议中的设备将极大地增强一些正在进行的研究项目，方法是：(A)能够表征具有各种粘弹性的各种材料(包括生物和合成材料)的动态机械性能；(B)能够研究多功能结构材料(仿生材料和3D打印结构)的行为；(C)满足对车辆中用于保护汽车碰撞中的人类的先进材料进行计算建模和模拟的迫切需求。 这些能力将使我们能够在该领域的前沿进行研究，并将我们的世界级程序提升到下一级的复杂程度。这种最先进的设备用途广泛，为我们的研究生和研究人员提供独特的培训机会具有巨大的潜力。在仪器的使用寿命期间，预计将对&gt；400 HQP进行培训，以测量复合材料和生物材料的动态机械性能。电子、汽车、航空航天、生物医学和医疗保健材料等制造行业对这些知识和技能的需求很高。