Recent Developments in Measuring Creep Strain in High Temperature Plant Components

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• 作者：A. Narayanan ; C. Maharaj ; M. Kelly ; A. Morris ; C. M. Davies and J. P. Dear
• 刊名：Strain
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：52
• 期：6
• 页码：467-477
• 全文大小：1599K
• ISSN：1475-1305

文摘

Accurate measurements of creep strain are necessary to evaluate the condition and predict the remaining life of power plant constituent materials. Optical techniques are appropriate for this purpose as they are a non-contact method and can therefore be used to measure strain without requiring direct access to the surface. Within this class of techniques, the Auto-Reference Creep Management And Control (ARCMAC) camera system can be used to calculate the strain between two points using a series of silicon nitride (SiN) target spheres (the ARCMAC gauge). There are two iterations in system design, the Conventional ARCMAC and Digital Single-Lens Reflex (DSLR) ARCMAC.