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首页> 外文会议>Sixth International Colloquium on Ageing of Materials and Methods for the Assessment of Lifetimes of Engineering Plant, Apr 30-May 4, 2001, Cape Town/South Africa >SOME NEGLECTED NDE TOOLS
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SOME NEGLECTED NDE TOOLS

机译：一些被忽略的NDE工具

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摘要

Aged properties of materials can be significantly affected, detrimentally, by environmental and operational conditions; extrapolations from virgin properties or short-term tests have no value. Assessments of integrity for plant beyond design life then usually result from worst case scenarios which bear no relation to reliability; management by emergency can then follow. Whilst trends towards risk-based inspection schemes are presently in fashion it seems that the real issue of gathering relevant material data should also have high priority. In this paper, a broad specification for useful tests aimed at gathering data non-destructively and economically is suggested. Particular reference is made for components in the creep range where on-line data collection is needed. Three test procedures are described: micro-hardness, optical/video interferometry and small specimen punching. Principles involved in these methods are well understood and equipment in use is well validated. Examples are given in the paper which demonstrate utility in practice.
机译：材料的老化特性会受到环境和操作条件的严重影响；从原始属性或短期测试推断没有任何价值。然后，对超出设计寿命的工厂完整性的评估通常是由与可靠性无关的最坏情况得出的。然后可以进行紧急管理。目前，基于风险的检查计划已趋于流行，似乎收集相关材料数据的实际问题也应被高度重视。在本文中，提出了有用测试的广泛规范，旨在以无损且经济的方式收集数据。特别需要蠕变范围内需要在线数据收集的组件。描述了三种测试程序：显微硬度，光学/视频干涉法和小试样冲孔。这些方法涉及的原理已广为人知，使用的设备也得到了充分验证。本文提供了一些示例，这些示例演示了实用性。

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