Alternative Title

Development of Pre-Machining Strategies for Laser-Aided Metallic Component Remanufacturing


Remanufacturing worn metallic components can prolong the service life of parts that need frequent replacement but are extremely costly to manufacture, such as aircraft titanium components, casting dies. Additive manufacturing (AM) technology enables the repair of such valuable components by depositing filler materials at the worn area layer by layer to regenerate the missing geometry. In general, damaged parts would be inspected and pre-machined prior to material deposition to remove oil, residue, oxidized layers or defects located in inaccessible regions. Therefore, the motivation of this paper is to introduce pre-repair machining strategies for removing contaminated materials from damaged components and materials surrounding inaccessible defects to ensure that the target damage is repairable. The current research targets at common failures comprising surface indentations, erosion, corrosion, wear and cracking, and the machining strategies for each defect were proposed. Each strategy takes the 3D scanned damaged model as input and the cut-off volume around the defects is defined by using different approaches. Pre-repair machining toolpath and program were generated based on the defined cut-off volume and finally, damaged parts were machined using the proposed strategies.

Meeting Name

29th Annual International Solid Freeform Fabrication Symposium -- An Additive Manufacturing Conference, SFF 2018 (2018: Aug. 13-15, Austin, TX)


Mechanical and Aerospace Engineering

Research Center/Lab(s)

Intelligent Systems Center


This project was supported by TOYOTA/Bodine Aluminum, National Science Foundation Grants CMMI-1547042 and CMMI-1625736, and the Intelligent System Center, Center for Aerospace Manufacturing Technology, and Material Research Center at Missouri S&T. Their financial support is greatly appreciated.

Keywords and Phrases

Pre-repair machining; Component repair; Defects; Additive manufacturing

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type




Publication Date

15 Aug 2018

Included in

Manufacturing Commons