Abstract To maintain high service levels and mitigate long lead times, many enterprises hold large spare parts inventories. Using additive manufacturing (AM) for spare parts in aviation has been proposed previously but prior studies did not address system-specific lead time impacts. This article codifies lifecycle variables introduced by AM and presents an aviation case study. The variables highlight the value offered by AM over traditional methods. Specifically, the case study demonstrates that introducing up to 35% of AM parts to the spare parts inventory improves the system replenishment lead time by up to 33%, thus suggesting AM can be used to mitigate challenges related to spare parts management. This work also presents an approach to integrate AM into the spare parts inventory mix.

中文翻译：

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航空用例的增材制造备件库存模型

摘要 为了保持高服务水平和缩短提前期，许多企业持有大量备件库存。以前曾提议将增材制造 (AM) 用于航空备件，但先前的研究并未解决特定于系统的交货时间影响。本文对 AM 引入的生命周期变量进行了编纂，并提供了一个航空案例研究。这些变量突出了 AM 提供的优于传统方法的价值。具体而言，案例研究表明，将多达 35% 的 AM 零件引入备件库存可将系统补货提前期缩短多达 33%，因此表明 AM 可用于缓解与备件管理相关的挑战。这项工作还提出了一种将 AM 集成到备件库存组合中的方法。