论文标题

测试板的热和尺寸评估,用于评估核退役存储中热成像仪的测量能力

Thermal and dimensional evaluation of a test plate for assessing the measurement capability of a thermal imager within nuclear decommissioning storage

论文作者

McMillan, Jamie Luke, Hayes, Michael, Hornby, Rob, Korniliou, Sofia, Jones, Christopher, O'Connor, Daniel, Simpson, Rob, Machin, Graham, Bernard, Robert, Gallagher, Chris

论文摘要

在这项基于实验室的研究中,使用热成像仪设计,制造并进行热和尺寸表征板。该板包括一系列已知的刮擦,凹痕,变薄和斑点伪像,作为可能的表面异常的模仿,以及更高的发射率靶标的排列。该板的热和尺寸表征促进了表面温度的测定。通过热模型和在温度下从\ sirange {30} {170} {\ celsius}的温度下对划痕的成功缺陷鉴定进行了验证。 这些实验室测量表明,将原位热成像部署到特殊核材料容器的热和尺寸表征的可行性。表面温度确定显示了\ sirange {1.0} {6.8} {\ celsius}(\(k = 2 \))的不确定性。抑制成功部署的原则挑战是缺乏适当的发射率数据以及适合静态和瞬态数据集的强大缺陷识别算法。

In this laboratory-based study, a plate was designed, manufactured and then characterised thermally and dimensionally using a thermal imager. This plate comprised a range of known scratch, dent, thinning and pitting artefacts as mimics of possible surface anomalies, as well as an arrangement of higher emissivity targets. The thermal and dimensional characterisation of this plate facilitated surface temperature determination. This was verified through thermal models and successful defect identification of the scratch and pitting artefacts at temperatures from \SIrange{30}{170}{\celsius}. These laboratory measurements demonstrated the feasibility of deploying in-situ thermal imaging to the thermal and dimensional characterisation of special nuclear material containers. Surface temperature determination demonstrated uncertainties from \SIrange{1.0}{6.8}{\celsius} (\(k = 2\)). The principle challenges inhibiting successful deployment are a lack of suitable emissivity data and a robust defect identification algorithm suited to both static and transient datasets.

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