| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Using Laser Ultrasonics to Correlate Young’s Modulus to Particle Neck Size in Early-Stage Sintering |
| Author(s) |
Christina L. Nissen, Arturo Hernandez-Barreto, Michael Haberman, Joseph Beaman, Desiderio Kovar |
| On-Site Speaker (Planned) |
Christina L. Nissen |
| Abstract Scope |
It is challenging to detect the onset of sintering in ceramics using nondestructive methods as there are no measurable changes in density and, in early-stage sintering, visible changes in particle morphology may also be difficult to detect. We investigate the use of a laser ultrasonic system to measure and detect changes in the Young’s modulus and assess the sensitivity of the Young’s modulus to particle neck size. Time-of-flight measurements are first made on bulk samples with uniform microstructures at various stages of the sintering process. We then use this technique to investigate the onset of localized sintering in ceramics that were selective laser flash sintered. |