首页> 外文会议>ASME Pressure Vessels and Piping Division/K-PVP conference;PVP2010 >MEASUREMENT OF THE STRAIN DISTRIBUTION IN NOTCH TIP HYDRIDES WITH HIGH ENERGY X-RAY DIFFRACTION AND THE IMPACT ON OVERLOAD MODELING
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MEASUREMENT OF THE STRAIN DISTRIBUTION IN NOTCH TIP HYDRIDES WITH HIGH ENERGY X-RAY DIFFRACTION AND THE IMPACT ON OVERLOAD MODELING

机译:高能X射线衍射刻痕尖端氢化物的应变分布测量及其对过载建模的影响

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摘要

The formation of notch-tip hydrides in CANDU® Zr-2.5Nb pressure tubes can significantly reduce their resistance to fracture, particularly during overload conditions. This paper outlines recent high energy X-ray diffraction measurements of notch tip strain fields in Zr-2.5Nb specimens, during both hydride growth and overload. The use of this data to validate continuum Finite Element (FE) and possible inclusion in 'Process Zone' models of hydride fracture are also discussed.
机译:CANDU®Zr-2.5Nb压力管中形成尖端的氢化物会显着降低其抗断裂性,特别是在过载条件下。本文概述了氢化物生长和超载期间Zr-2.5Nb样品的缺口尖端应变场的最新高能X射线衍射测量。还讨论了使用该数据验证连续有限元(FE)以及可能包含在氢化物破裂的“过程区”模型中的问题。

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