• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Symposium on nontraditional methods of sensing stress, strain, and damage in materials and structures >Use of Portable/in Situ Stress-Strain Microprobe System to Measure Stress-Strain Behavior and Damage in Metallic Materials and Structures
【24h】

Use of Portable/in Situ Stress-Strain Microprobe System to Measure Stress-Strain Behavior and Damage in Metallic Materials and Structures

机译：使用便携式/原位应力 - 应变微探测系统来测量金属材料和结构的应力 - 应变行为和损伤

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A novel portable/in situ Stress-Strain Microprobe (SSM) system was used to measure true-stress/true-plastic-strain (sigma_t-epsilon_p) behavior of several metallic materials, welds, and their heat-affected-zones (HAZs) in various metallurgical and damage conditions. The SSM system utilized an automated ball indentation (ABI) technique to measure elastic modulus, yield strength, sigma_t-epsilon_p curve, strength coefficient, strain-hardening-exponent (uniform ductility), and to estimate fracture toughness (from the ABI-measured flow properties) in carbon steels, stainless steels, nickel alloys, aluminum alloys, titanium alloys, zirconium alloys, etc. Numerous ABI tests were also conducted on several nuclear pressure vessel steels (NPVSs) in the unirradiated, neutron irradiated, and post-irradiated thermally-annealed conditions. For all these test materials and conditions, the ABI-derived results were in good agreement with those from conventional standard test methods. Furthermore, the nondestructive ABI test results rigorously indicated the various levels of neutron-embrittlement damage and the percentage of ductility recovery following thermal annealing of the NPVS specimens. In situ/nondestructive structural applications of the SSM system and its ABI technique have been demonstrated by testing a circumferentially welded stainless steel pipe and a full-thickness section of a nuclear pressure vessel (using 90deg V-blocks and magnetic mounts for temporary attachment of the SSM testing head to the pipe and the steel section, respectively). All SSM localized tests were computer-controlled and conducted in less than 2 minutes per ABI test; depending on the desired strain rate. Example test results on metallic structural components and samples are presented in this paper.
机译：用于测量几种金属材料，焊接及其热影响区域（HAZS）的新型便携式/原位应力 - 应变微探测（SSM）系统用于测量几种金属材料，焊接和其热影响区域的真菌/真塑性 - 菌株（Sigma_t-epsilon_p）行为在各种冶金和损伤条件下。 SSM系统利用自动球凹口（ABI）技术来测量弹性模量，屈服强度，Sigma_T-EPSILON_P曲线，强度系数，应变硬化指数（均匀的延展性），并估计断裂韧性（来自ABI测量的流动在碳钢，不锈钢，镍合金，铝合金，钛合金，锆合金等中的性质也在未照射，中子辐照的几种核压力容器钢（NPVS）上进行了许多ABI测试，并在辐照后热 - 阵营的条件。对于所有这些测试材料和条件，ABI衍生的结果与来自常规标准试验方法的结果吻合良好。此外，非破坏性ABI测试结果严格地表明了NPVS样本的热退火后的各种水中中子脆化损伤和延展性恢复百分比。通过测试圆周焊接的不锈钢管和核压力容器的全厚度部分（使用90deg V-Blocks和磁芯支架来临时附着，以SSM系统及其ABI技术的原位/非破坏性结构应用已经证明了SSM系统及其ABI技术。 SSM测试头部到管道和钢部分）。所有SSM本地化测试都是计算机控制的，并在每ABI测试中不到2分钟进行;取决于所需的应变率。本文提出了金属结构部件和样品上的示例性测试结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号