Determination of true stress-strain data using spherical indentation techniques

使用球形压痕技术确定真实应力应变数据

• 批准号: 507122-2016
• 负责人: Weck, Arnaud
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 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=610253
• 关键词: Determination; true; stress; strain; data

Traditional methods for obtaining the mechanical properties of materials, i.e. the true stress-strain data, require the use of a tensile testing machine. This instrument which is used to pull apart a test specimen is bulky and expensive and requires large amounts of material. Precisely machined test coupons from the material are needed and each sample can only be tested once. The indentation technique is an alternative solution that provides true stress-strain data comparable to those obtained by traditional tensile tests. Stackpole International, a premier manufacturing company located in Ancaster, Ontario, wishes to investigate the indentation technique on various power metallurgy samples, as well as test the effect of indentation size on the accuracy of stress-strain data received. The company will benefit greatly from this technique, as it will provide a quick method for obtaining material properties without the need for expensive sample machining and tensile testing methods.

获得材料机械性能（即真实应力应变数据）的传统方法需要使用拉伸试验机。这种用于拉开测试样本的仪器体积庞大且昂贵，并且需要大量材料。需要用材料精确加工的测试附片，每个样品只能测试一次。压痕技术是一种替代解决方案，可提供与传统拉伸试验获得的数据相当的真实应力应变数据。 Stackpole International 是一家位于安大略省安卡斯特的一流制造公司，希望研究各种粉末冶金样品的压痕技术，并测试压痕尺寸对收到的应力应变数据准确性的影响。该公司将从这项技术中受益匪浅，因为它将提供一种快速获得材料性能的方法，而无需昂贵的样品加工和拉伸测试方法。