Abstract
The need for noncontact, nondestructive and in-situ evaluation of powder-based additive manufacturing (AM) processes make laser ultrasound a promising method for quality monitoring of complex powder-based manufacturing processes. For safe use of additively manufactured materials, quality control of the parts becomes important as the industrial applications of AM components are increasing. In order to identify the defects and determine material properties of AM by laser-based ultrasound, the generated ultrasonic signal must be well understood. Numerical modelling can allow the interplay of the various factors to be studied leading to improved experimental design. This poster presents finite element modelling (FEM) simulation results of laser generated ultrasonic waves in SS17 4 PH manufactured by Selective Laser Melting of materials powder. The propagation of the laser generated ultrasound waves is modelled for evaluation of different physical / material properties (thermal conductivity and absorptivity) and laser properties (spot size, pulse duration, and energy).
| Original language | American English |
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| State | Published - Jun 17 2018 |
| Event | International Conference on Powder Metallurgy and Particulate Materials (POWDERMET) - San Antonio, TX Duration: Jun 17 2018 → … |
Conference
| Conference | International Conference on Powder Metallurgy and Particulate Materials (POWDERMET) |
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| Period | 06/17/18 → … |
Disciplines
- Engineering
- Manufacturing
Keywords
- In-situ monitoring
- Laser ultrasound
- NDE
- Powder-based additive manufacturing