RUI: Controlled Biaxial Deformation in Lightweight Alloys at Elevated Temperatures

RUI：高温下轻质合金的受控双轴变形

• 批准号: 1100356
• 负责人: John Roth
• 金额: $ 21.98万
• 依托单位: Pennsylvania State Univ University Park
• 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: 2011-07-15 至 2017-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1100356&HistoricalAwards=false
• 关键词: RUI; Controlled; Biaxial; Deformation; Lightweight

This Research in Undergraduate Institutions (RUI) project aims to advance the current state of material characterization via a comprehensive experimental approach that is based on biaxial loading. Metallic materials undergo biaxial stretching during sheet metal forming operations, yet efforts on biaxial testing are overshadowed by those based on the uniaxial loading case. A customized apparatus capable of deforming test specimens at controlled biaxial stretching ratios will be constructed. It will incorporate a heating system to facilitate testing at high temperatures, and an optical strain measurement system for the accurate evaluation of biaxial strains. Detailed biaxial stretching tests will then be carried out on multiple materials, covering a wide range of testing conditions. The collected data is essential to produce mathematical equations that can accurately describe the behavior of the investigated materials. The research will focus on lightweight alloys (Magnesium, Aluminum, and Titanium) because their weight-saving properties make them increasingly critical to the automotive and aerospace industries.This project will be executed at an institution of primary undergraduate education; it will therefore offer a unique opportunity for promoting students involvement in state-of-the-art research. The testing apparatus will support and enrich several courses and laboratories, in multiple engineering programs. It will also promote collaborative research activities within the college, especially within the newly-established "Energy" and "Medical Plastics Research" Centers. Aided by the current ties with General Motors, this research will serve the needs of the automotive sheet metal forming industry, and contribute to the development of a much-needed biaxial testing standard.

该研究在本科院校（RUI）项目的目的是通过一个全面的实验方法，是基于双轴加载推进材料表征的现状。 金属材料在板料成形过程中经历双向拉伸，然而基于单轴加载情况的双向拉伸试验却使双向拉伸试验黯然失色。 将构建能够在受控双轴拉伸比下使试样变形的定制装置。它将包括一个加热系统，以方便在高温下进行测试，以及一个光学应变测量系统，以准确评估双轴应变。 然后将对多种材料进行详细的双轴拉伸试验，涵盖广泛的测试条件。 收集的数据对于生成能够准确描述所研究材料行为的数学方程至关重要。 该研究将集中在轻质合金（镁、铝和钛）上，因为它们的轻量化特性使它们在汽车和航空航天工业中越来越重要。该项目将在小学本科教育机构执行，因此将为促进学生参与最先进的研究提供独特的机会。 该测试设备将支持和丰富多个工程项目中的多个课程和实验室。 它还将促进学院内的合作研究活动，特别是在新成立的“能源”和“医疗塑料研究”中心。 借助目前与通用汽车公司的联系，本研究将服务于汽车钣金成形行业的需求，并有助于开发急需的双轴测试标准。