• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Society for Nondestructive Testing(ASNT) Fall Conference amp; Quality Testing Show: Paper Summaries; 20041115-19; Las Vegas,NV(US) >Nondestructive Detection of Alpha Inclusions in Titanium Alloys Using the PIPA Process
【24h】

Nondestructive Detection of Alpha Inclusions in Titanium Alloys Using the PIPA Process

机译：使用PIPA工艺对钛合金中的Al夹杂物进行无损检测

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The presence of alpha inclusions in titanium alloys that are induced during casting is a critical problem that can result in catastrophic failure of aircraft utilizing titanium alloy structural and engine components when subjected to operational fatigue. As part of a National Science Foundation project, the ability of Photon Induced Positron Annihilation (PIPA) to identify alpha inclusions in titanium and to detect fatigue damage in the titanium that can cause the component to fail was evaluated. Results of these studies indicated that the PIPA technique is highly sensitive to changes in the atomic lattice structure of titanium alloys induced by alpha inclusions, fatigue damage, and to microstructural changes which suggest that alpha inclusions have been formed. The PIPA technology is suitable for alpha inclusion and fatigue damage detection measurements during initial titanium processing through the entire life of manufactured aircraft components. The high sensitivity of the PIPA process to alpha inclusions and fatigue damage provides a powerful nondestructive tool that is suitable for identifying and quantifying abnormal damage accumulation and can help to identify and characterize specific failure mechanisms, including assessing remaining component life. Use of PIPA or the more portable technologies for field inspection processes provides an accurate, nondestructive measurement basis for aircraft health management applications.
机译：铸造期间在钛合金中诱发的α夹杂物的存在是一个关键问题，当使用钛合金结构和发动机部件时，如果操作疲劳，会导致飞机发生灾难性故障。作为国家科学基金会项目的一部分，评估了光子诱导的正电子An灭（PIPA）识别钛中的α夹杂物并检测可能导致组件失效的钛疲劳损伤的能力。这些研究结果表明，PIPA技术对由α夹杂物引起的钛合金原子晶格结构的变化，疲劳损伤以及表明已经形成α夹杂物的微观结构变化高度敏感。 PIPA技术适用于在初始钛加工过程中整个飞机零部件的整个使用寿命期间进行的α夹杂物和疲劳损伤检测。 PIPA工艺对α夹杂物和疲劳损伤的高度敏感性提供了一个功能强大的非破坏性工具，适用于识别和量化异常损伤的累积，并且可以帮助识别和表征特定的故障机制，包括评估组件的剩余寿命。在现场检查过程中使用PIPA或更便携的技术可为飞机健康管理应用程序提供准确，无损的测量基础。

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