AFC （AREVA Fatigue Concept）-An Integrated and Multi-disciplinary Approach to the Fatigue Assessment of NPP Components

The prevention of fatigue damages is a crucial issue for NPPs （nuclear power plants）. The AFC （AR.EVA fatigue concept） provides for a multi-step and mnlti-disciplinary process against fatigue during the design and operating phase of NPPs. The entire process of fatigne design is based on an installed FAMOS （fatigue monitoring system）. In this way, realistic load data are available to manage the component ageing and enable the optimization of operating modes. The measured temperatures are processed via a FFE （fast fatigue evaluation）. Thus, an online fatigue evaluation of the cumulative usage factor is performed after every operational cycle. This procedure gives a first fatigue status of the power plant. Furthermore, a DFC （detailed fatigue calculation） conforming to the code rules is carried out in order to determine the state of the plant at the highest loaded positions. These finite element analyses include determination of thermal transient and subsequent stresses and strains. Fatigue environmental factors are taken into account in these studies.

江西地区普通公路沥青路面维护保养决策分析探究

基于不同温度条件的沥青路面半刚性基础层、沥青表层疲劳状态以及车辙损害状态分析。本文围绕温度这一路面性能的重点影响因素,借助温度—荷载—车速路面状态预估模型,以柱图和曲线对比分析的方式,对江西地区不同温度时域条件下沥青路面伤损状态预估课题开展专题分析探究,以为地区路面健康状态预测应用提供研究和规律参考,助力实现优质高效的区沥青路面的健康状态预测与养护。