| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing: Equipment, Instrumentation and Measurement
|
| Presentation Title |
Analysis of In-Situ, 3D Surround Digital Image Correlation with Mapped Thermography in Directed Energy Deposition |
| Author(s) |
James C. Haley, Samuel Leach, Brian Jordan, Ryan Dehoff, Vincent Paquit |
| On-Site Speaker (Planned) |
James C. Haley |
| Abstract Scope |
In Directed Energy Deposition (DED) AM, inherent residual stress and distortion are introduced by a complex and time-variable thermal field, which poses a serious barrier to widespread adoption of the process. Using an array of low cost visible and infrared cameras, we show that these distortions and temperature variations can be measured in-situ with full surround 3D using Digital Image Correlation (DIC), for any printed geometry. Such measurements provide rapid feedback for process optimization, as it allows direct measurement and estimation of a number of different key process variables. Capabilities and limitations of the system are discussed, and compare results to simulation and ex-situ measurements for sample geometries. |