CARR上的应力测量中子衍射谱仪概念设计和模拟研究  

Conceptual design and simulation on neutron diffractometer for stress measurement at CARR

作　　者：郭立平[1] 李际周[1] 

机构地区：[1]中国原子能科学研究院核物理研究所中子散射实验室

出　　处：《核技术》2005年第3期231-235,共5页Nuclear Techniques

摘　　要：中子衍射法是迄今为止可直接测量材料或工程部件内部深处应力场分布的唯一非破坏性方法,在工程上具有重要的应用。中国先进研究堆(CARR)中子散射工程拟建造一台应力测量中子衍射谱仪,其主要功能是测量材料中的残余应力和载荷应力。本文介绍了该谱仪的概念设计方案,并应用蒙特卡罗模拟软件 MCSTAS对设计方案进行了模拟研究,对部分中子部件参数进行了优化设计。Neutron diffraction is so far the only nondestructive method which may be used to measure the stress distribution deep inside materials or components directly and thus has important applications in engineering. A neutron diffractometer dedicated for stress measurement is under construction at China Advanced Research Reactor (CARR) by the Neutron Scattering Project, and its main function is to determine residual stress and applied stress in materials. In this paper we report the conceptual design of the instrument. The design was studied by simulation with the Monte Carlo ray-tracing software, MCSTAS, and a part of the component parameters was optimized.

关 键 词：中子衍射仪 残余应力 蒙特卡罗模拟 中国先进研究堆 

分 类 号：TL817.3[核科学技术—核技术及应用] O242.2[理学—计算数学]