Optimization of component reliability in the design phase of capital goods
Optimization of component reliability in the design phase of capital goods
复制标题
DOI：
10.1016/j.ejor.2010.01.030
复制
发表时间：
2010-09
期刊：
影响因子：
--
通讯作者：
Kurtulus B. Öner;G. Kiesmüller;G. Houtum
中科院分区：
文献类型：
--
作者：
Kurtulus B. Öner;G. Kiesmüller;G. Houtum
我们引入了一个定量模型，以支持在其设计过程中的关键部件的可靠性水平的决定。我们认为OEM负责通过服务合同在现场提供其系统。一旦在开发阶段系统中的关键部件发生故障，故障部件将由备用部件库存中的备用部件替换。在缺货的情况下，采用了昂贵的紧急程序。关键部件的可靠性水平和备件库存水平是决定系统停机时间和相应成本的两个主要因素。这两个水平是我们模型中的决策变量。我们制定的部分寿命周期成本（LCC）的影响，一个组件的可靠性和备件库存水平。这些成本包括设计成本、生产成本以及开发阶段的维护和停机成本。我们进行了精确的分析，并提供了一个有效的优化算法。我们提供管理的见解，通过数值实验，这是基于现实生活中的数据。
We introduce a quantitative model to support the decision on the reliability level of a critical component during its design. We consider an OEM who is responsible for the availability of its systems in the field through service contracts. Upon a failure of a critical part in a system during the exploitation phase, the failed part is replaced by a ready-for-use part from a spare parts inventory. In an out-of-stock situation, a costly emergency procedure is applied. The reliability levels and spare parts inventory levels of the critical components are the two main factors that determine the downtime and corresponding costs of the systems. These two levels are decision variables in our model. We formulate the portions of Life Cycle Costs (LCC) which are affected by a component’s reliability and its spare parts inventory level. These costs consist of design costs, production costs, and maintenance and downtime costs in the exploitation phase. We conduct exact analysis and provide an efficient optimization algorithm. We provide managerial insights through a numerical experiment which is based on real-life data.