About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
|
Presentation Title |
An Acoustic Emission Monitoring Method during LPBF Processing for Detection of Microdefects |
Author(s) |
Kaita Ito, Rinako Kokaji, Masahiro Kusano, Makoto Watanabe, Takayuki Shiraiwa, Manabu Enoki |
On-Site Speaker (Planned) |
Kaita Ito |
Abstract Scope |
A novel acoustic emission monitoring method is presented for microdefect detection during laser powder bed fusion processing. This method enables accurate mapping of the occurrence time and location of microdefects. Even in one-time process in which multiple objects with different laser irradiation power and scanning speed are fabricated at the same time, it is possible to identify which object generated the AE by simple measurement using few sensors. Comparison of the observation results of the fabricated objects by X-ray CT and the detection history of AE events revealed that microcracks can be best detected by AE measurement among various types of defects during building. This method enables simple and real-time monitoring of production quality regardless of the material, size, and shape of the modeled object. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Process Technology, Other |