The Third Sandia Fracture Challenge

The Third Sandia Fracture Challenge (SFC3) is a collaborative effort for assessment of the state-of-the-art predictive capability in ductile failure. The Challenge is designed such that computational modelers are asked to predict ductile failure in an unfamiliar geometry using provided standard materials data. The SFC3, issued in December 2016, is centered on an additively manufactured 316L stainless steel geometry with through holes and internal cavities that could not be produced by conventional machining. The provided information to enable the predictions includes: base material tensile behavior for different material configurations and loading rates; notched base material tensile behavior; fabrication drawings of the base material specimens and the Challenge (unfamiliar) geometry; electron backscatter diffraction of the Challenge geometry mid-plane; micro-computed tomography data of all Challenge geometry specimens; scanning electron microscope images of the fracture surface of tensile and notched tensile base material specimens; macroscopic images of fractured base material specimens; descriptions of the boundary conditions for the base-material and Challenge-geometry tests; questions to be answered for the prediction (quantities of interest); and an overview presentation of the Challenge.

第三届桑迪亚断裂挑战赛（Third Sandia Fracture Challenge, SFC3）是一项旨在评估延性断裂预测领域当前顶尖水平的协作研究项目。本次挑战赛设置为：要求计算建模人员依托提供的标准材料数据，对陌生几何结构中的延性断裂行为进行预测。SFC3于2016年12月发起，核心研究对象为增材制造的316L不锈钢几何结构，该结构带有传统机械加工无法制备的通孔与内部空腔。可供预测参考的信息包括：不同材料配置与加载速率下的母材拉伸力学行为、带缺口母材的拉伸力学行为、母材试样及挑战赛用陌生几何结构的加工图纸、挑战赛几何结构中截面的电子背散射衍射（electron backscatter diffraction）数据、所有挑战赛几何结构试样的显微计算机断层扫描（micro-computed tomography）数据、拉伸与带缺口拉伸母材试样断口的扫描电子显微镜（scanning electron microscope）图像、断裂母材试样的宏观图像、母材试样及挑战赛几何结构测试的边界条件说明、需通过预测解答的关注量问题，以及本次挑战赛的概述报告。

搜集汇总

背景与挑战

背景概述

该数据集是2018年发布的'第三届桑迪亚断裂挑战赛'，旨在评估韧性断裂预测的先进能力，专注于增材制造的316L不锈钢几何结构，通过提供标准材料数据、微观结构图像和实验边界条件，支持计算建模者预测陌生几何中的断裂行为。