Acoustic Laser Triangulation and Tagging for Additive Manufacturing Process Monitoring
Abstract
PSU/ARL seeks to address the AROÕs interest in investigating new process monitoring concepts and processing methodologies for Additive Manufacturing (AM) that facilitate improved part quality and rapid part qualification while reducing the need for costly and time consuming conventional post-process inspection such as X-Ray Computed Tomography (CT) scanning. Specifically, we propose to conduct a feasibility study for AM acoustic monitoring with a focus on powder bed fusion AM (PBFAM) processes. The objectives are twofold. First, we will formally assess the acoustic footprint of the underlying AM process and its propagation in the AM build chamber to enhance in-situ process monitoring. Second, we will conduct a feasibility study for acoustic laser (or melt pool) tracking with multiple sensors. The latter aims to facilitate acoustic monitoring for large-format, multi-laser AM systems, for which acoustic footprints are superimposed and will need to be spatially disambiguated. In-situ process monitoring data for single laser systems, including machine log files that contain the laser trajectory as function of time, are readily available at ARLÕs Center for Innovative Material Processing through Direct Digital Deposition (CIMP-3D) through previous work funded by the Office of Naval Research and America Makes. The available commercial test bed, a 3D Systems ProX 320, is equipped with a 3-sensor acoustic array (10 kHz Ð 125 kHz) that is mounted inside the build chamber. For technology transition, the PSU/ARL team is currently targeting 3D Systems ProX 500 multi-laser system.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 05, 2022
- Source ID
- W911NF2210059
Entities
People
- Jan Petrich
Organizations
- Army Contracting Command
- Pennsylvania State University
- United States Army