A review of factors affecting the use of Electrical Potential Drop (EPD) for creep life monitoring

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials at High Temperatures Pub Date : 2023-02-22 DOI:10.1080/09603409.2023.2175563

Adam Wojcik, Matthew Waitt, Alberto S. Santos, A. Shibli

引用次数: 1

Abstract

ABSTRACT To help determine remaining lifetime of pressure vessels suffering creep, the authors have previously developed a method and presented promising results using a combination of AC and DC electrical potential drop (EPD) on-line monitoring, detecting both final cracking as well as incipient creep damage. The latter was tentatively ascribed to the development of cavitation damage, but recent modelling and separate off-line measurements have shown that cavitation is unlikely to provide enough of a change in electrical properties to explain all of the variations previously observed. Here we gather the results obtained to date, and review their likely relationships in an attempt to obtain a greater insight into the mechanisms at play. Whilst changes in both on-line and off-line EPD are largely in accord, the belief now is that the changes seen cannot be fully explained by cavitation development and that EPD is responding to other creep induced phenomena as well.

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影响电势降(EPD)用于蠕变寿命监测的因素综述

为了帮助确定承受蠕变的压力容器的剩余寿命，作者之前开发了一种方法，并展示了一种令人满意的结果，该方法使用交流和直流电位降(EPD)在线监测相结合，检测最终开裂和早期蠕变损伤。后者暂时归因于空化损伤的发展，但最近的建模和单独的离线测量表明，空化不太可能提供足够的电性能变化来解释之前观察到的所有变化。在这里，我们收集了迄今为止获得的结果，并回顾了它们之间可能的关系，试图更深入地了解起作用的机制。虽然在线和离线环境下的变化基本一致，但现在的观点是，所看到的变化不能完全用空化发展来解释，而且环境保护也对其他蠕变现象做出了反应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.