IRES Track I: Mechanics of Porous Media across Scales - Research Experience at Paris Tech (MPMS Paris)

多孔材料无处不在：土壤和岩石支撑栖息地并储存能量，胶凝材料是基础设施的基石，我们的身体是由多孔组织组成的。引人注目的是，在所有这些介质中，固体物质的缺乏，称为多孔空间，触发了导致固体结构和/或流体流动不稳定的过程。该国际学生研究体验(IRES)网站奖名为“跨尺度多孔介质的力学--巴黎的研究体验”(MPMS Paris)，支持美国学生沉浸在法国巴黎的尖端孔隙力学研究实验室中。该奖项旨在让佐治亚理工学院的学生接触应用于土木工程、环境和生物力学工程的孔隙力学研究，让他们沉浸在总部设在巴黎的欧洲领先机构的学术文化中，并激励他们追求科学事业，创造出抗压、可持续和安全的多孔材料，以应对基础设施、能源和健康需求。IRES参与者将在来自佐治亚理工学院和MPMS巴黎合作伙伴的双重导师的监督下，在巴黎领先合作伙伴机构的几个托管实验室之一进行为期10周的研究实习。该项目包括在以前的IRES奖项上合作的有经验的团队和新加入合作的团队。实习前和实习后的活动将与佐治亚理工学院国际教育方案和法国驻亚特兰大总领事馆的科技部合作举办。与常规课程相比，IRES的参与者将拥有精英工程实验室的研究项目，获得语言技能，并有更长时间接触历史、技术和社会。教师、本科生和研究生活动的整合预计将保持专注于孔洞力学实验、理论和数值研究的小组之间的长期合作。需要一个多尺度的方法来从根本上理解多孔介质中在机械和环境作用下发生的复杂现象，如滞后流动和吸附、裂缝的萌生和扩展、孔内结晶和损伤发展、树脂渗透和组织修复。IRES网站将汇集一群科学家，其中包括理论相态力学和热力学方面的世界专家，他们来自巴黎Ponts理工学院(欧洲顶尖的应用数学和力学项目)的Navier和IFSTTAR，来自Centrale-Supelec的MSSMat(欧洲顶尖的机械和电气工程项目)，以及巴黎理工学院的LMS(法国最顶尖的工程学院)。主办实验室配备了独特的实验、成像和材料处理设施，位于法国精英工程项目--大专学院的校园内。多孔材料物理和力学的基础研究将把尖端的模拟工具与先进的实验和成像技术相结合，建立能够捕捉生物-热-水-化学-机械耦合过程的多尺度模型，并预测工程系统的可持续性和耐久性。由双重导师组成的团队将通过与几组IRES学生就一个核心研究主题进行合作来促进长期合作。IRES计划还将支持导师的旅费，以进一步增强学生体验和合作研究活动。该项目将支持通过之前由PI领导的IRES奖项建立的成功合作，将该计划扩大到更大、更多样化的学者群体，并确保佐治亚理工学院和巴黎之间的学者双边流动。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Porous materials are ubiquitous: soils and rocks support habitat and store energy, cementitious materials are the building blocks of infrastructure, and our body is made of porous tissues. Strikingly, in all of these media, the absence of solid matter, called the porous space, triggers processes that lead to instabilities of the solid structure and/or of the fluid flow. This International Research Experiences for Students (IRES) site award, titled "Mechanics of Porous Media across Scales - Research Experience in Paris" (MPMS Paris), supports U.S. students for immersion in cutting-edge poromechanics research laboratories in Paris, France. The award aims to expose Georgia Tech students to poromechanics research applied to civil, environmental and biomechanical engineering, to immerse them in the academic culture of leading European institutions based in Paris, and to inspire them in the pursuit of a scientific career to create resistant, sustainable and safe porous materials in response to infrastructure, energy and health demands. IRES participants will do a 10-week research internship in one of several host laboratories at leading partners institutions in Paris under the supervision of dual mentors from Georgia Tech and the MPMS Paris partner. The project includes experienced teams who collaborated on a prior IRES award and teams new to the collaboration. Pre- and post- internship activities will be organized in partnership with Georgia Tech international education programs and the Science and Technology Department at the Consulate General of France in Atlanta. IRES participants will take ownership of a research project in elite engineering laboratories, acquire language skills and have longer exposure to history, technology and society than in a regular curriculum. The integration of activities for faculty and undergraduate and graduate students is expected to sustain long-term collaborations between groups focusing on experimental, theoretical and numerical research in poromechanics.Technical description. A multi-scale approach is needed to gain a fundamental understanding of the complex phenomena that occur in porous media subjected to mechanical and environmental solicitations, such as hysteretic flow and adsorption, fracture initiation and propagation, in-pore crystallization and damage development, resin infiltration and tissue restoration. The IRES site will gather a community of scientists including world experts in theoretical poro-mechanics and thermodynamics, from Navier and IFSTTAR at Ecole des Ponts Paris Tech (a top European program in applied mathematics and mechanics), MSSMat at Centrale-Supelec (a top European program in mechanical and electrical engineering) and LMS at Ecole Polytechnique (the most selective engineering school in France). Host laboratories are equipped with unique experimental, imaging and material processing facilities and are located on the campuses of French "Grandes Ecoles", which are elite engineering programs. Fundamental research in the physics and mechanics of porous materials will combine cutting-edge simulation tools with advanced experimental and imaging techniques to establish multi-scale models that can capture coupled bio-thermo-hydro-chemo-mechanical processes and predict the sustainability and durability of engineered systems. Teams of dual mentors will foster long-term collaborations by working with several cohorts of IRES students on a core research topic. The IRES program will also support travel expenses for mentors to further enhance the student experience and collaborative research activities. The project will support the successful collaborations established through a prior IRES award led by the PI, expand the program to a larger and more diverse group of scholars and ensure a bilateral flow of scholars between Georgia Tech and Paris.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.