Abstract
Additive manufacturing (AM) opens up many opportunities for repair and feature enhancement of existing components by 3D printing over already existing structures. However, much research, on the irregularities in the microstructure and lack of consistency in the material properties of the already existing portion and 3D printed additions is needed before such opportunities can be leveraged. In this paper, the potential discrepancy in the material properties of the already existing portion of the component and the 3D printed additions is investigated using a nondestructive testing (NDT) approach. Accordingly, in this study, AM is used for production of components forming the final part composition by adding new sections to the existing parts. Wire Arc Additive Manufacturing (WAAM) was used in this study as it has been the focus of many applications for printing over existing parts. The investigation is performed by considering a base structure for part composition, and inclusion of additional components fabricated with the WAAM method. Testing of the part integrity at different locations is done using Resonant Ultrasound Spectroscopy (RUS), and then comparing this with radiographic testing alternative. Results showed that the materials properties vary at different regions in existing and new deposition regions of the part, as well as in the transition area between the existing and new deposition region. These variations could be identified quickly and effectively using RUS method by examining frequency shifts or changes in spectrum amplitudes.
Original language | English |
---|---|
Article number | 100117 |
Journal | Journal of Advanced Joining Processes |
Volume | 5 |
DOIs | |
State | Published - Jun 2022 |
Scopus Subject Areas
- Chemical Engineering (miscellaneous)
- Mechanical Engineering
- Mechanics of Materials
- Engineering (miscellaneous)
Keywords
- Additive manufacturing (AM)
- Remanufacturing
- Resonant ultrasound spectroscopy (RUS)
- Wire arc additive manufacturing (WAAM)