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首页> 外文期刊>International Journal of Information Technology >Determining Full Stage Creep Properties from Miniature Specimen Creep Test
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Determining Full Stage Creep Properties from Miniature Specimen Creep Test

机译：通过微型试样蠕变测试确定全阶段蠕变特性

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摘要

In this work, methods for determining creep properties which can be used to represent the full life until failure from miniature specimen creep tests based on analytical solutions are presented. Examples used to demonstrate the application of the methods include a miniature rectangular thin beam specimen creep test under three-point bending and a miniature two-material tensile specimen creep test subjected to a steady load. Mathematical expressions for deflection and creep strain rate of the two specimens were presented for the Kachanov-Rabotnov creep damage model. On this basis, an inverse procedure was developed which has potential applications for deriving the full life creep damage constitutive properties from a very small volume of material, in particular, for various microstructure constitutive  regions, e.g. within heat-affected zones of power plant pipe weldments. Further work on validation and improvement of the method is addressed.
机译：在这项工作中，提出了确定蠕变特性的方法，这些方法可用来表示整个寿命，直到基于分析解决方案的微型试样蠕变测试失败为止。用于证明该方法应用的示例包括在三点弯曲下的微型矩形薄梁试样蠕变试验和在稳定载荷下的微型两材料拉伸试样蠕变试验。对于Kachanov-Rabotnov蠕变损伤模型，给出了两个试样的挠度和蠕变应变率的数学表达式。在此基础上，开发了一种逆过程，该过程具有潜在的应用价值，可从非常少量的材料中获得整个寿命的蠕变损伤本构特性，特别是对于各种微观结构本构区域而言。在电厂管道焊件的受热影响区域内。解决方法的验证和改进的进一步工作。

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