公开(公告)号：US5307385A

公开(公告)日：1994-04-26

申请号：US895049

申请日：1992-06-08

申请人： Shizuka Shimanuki ,  Kiyotomo Nakata ,  Shizuo Matushita ,  Shigeki Kasahara ,  Michiyoshi Yamamoto ,  Hideya Anzai

发明人： Shizuka Shimanuki ,  Kiyotomo Nakata ,  Shizuo Matushita ,  Shigeki Kasahara ,  Michiyoshi Yamamoto ,  Hideya Anzai

IPC分类号： G01N17/00 ,  G21C17/00

CPC分类号： G21D3/001 ,  G01N17/00 ,  G21C17/00 ,  Y02E30/40

摘要： A method and an apparatus for estimating the remaining service life of an object by measuring the physical quantity of a sample and which are applicable to a nuclear reactor. A plurality of model samples are experimentally prepared by preliminarily disposing a material having substantially the same composition as the object to be subjected to the estimation in an environment substantially the same as the object and measuring the physical quantities of the model samples in relation with exposure times. From this experiment, a relationship between the exposure time and the physical quantity under such an environment is obtained. Further, a critical exposure time which will cause an unstable fracture of a material of an actual sample, which is made of a material substantially the same as the object and placed in substantially the same environment as the object, is preliminarily obtained from the relationship between the exposure time and the physical quantity for the model samples. The physical quantity of the actual sample is then measured. Subsequently, an actual exposure time corresponding to the physical quantity of the actual sample is obtained by using the relationship between the physical quantity and the exposure time. Thereafter, a difference between the critical exposure time and the actual exposure time is calculated to obtain a remaining service life of the object.

摘要翻译： 一种用于通过测量样品的物理量并且适用于核反应堆来估计物体的剩余使用寿命的方法和装置。 通过在与目标基本相同的环境中预先设置与要进行估计的物体基本相同的组成的材料并且测量与曝光时间相关的模型样品的物理量来实验地制备多个模型样本 。 从该实验可以看出，在这种环境下曝光时间与物理量之间的关系。 此外，由与目标基本上相同的材料制成的实际样品的材料的不稳定断裂的临界暴露时间预先从对象的相互关系中获得， 模型样本的曝光时间和物理量。 然后测量实际样品的物理量。 随后，通过使用物理量和曝光时间之间的关系来获得与实际样品的物理量相对应的实际曝光时间。 此后，计算临界曝光时间和实际曝光时间之间的差以获得对象的剩余使用寿命。