3D Printer planning the production of weapon parts in the shortest possible time

Abstract

This study presents a mathematical model to optimise the production of weapon parts using a
3D printer using parallel machine planning. After the battle with the enemy is over, many weapons
will be damaged. Damaged weapons are classified as full, medium or minor damage. Among these,
weapons with minor damage can be used again immediately after repair, simply by replacing the
damaged or missing part. However, due to the constant movement of troops around the battlefield,
carrying thousands of weapon parts is not practical. To remedy this situation, a 3D printer can be
carried in a separate unit and the necessary parts can be produced in the field to repair even minor
weapon damage. A model for scheduling the production of the necessary parts in a short period after
each battle is over is proposed for this purpose. A set of multiple 3D printers can operate as a
parallel machine and produce different parts. The 3D printers can produce a finished product for
each part simultaneously or produce two separate parts for each part, but if they make individual
parts, this increases the burden on that part due to the production of additional fasteners for
assembly. That is, in the case of making individual parts, the total production time for that part will
be longer compared to the case of making the finished product immediately. Nevertheless, this study
confirms that by introducing a sub-batch fabrication concept of weapon parts, the production time
can be reduced when planning the production schedule of a 3D printer.