Veranstaltungsort
Online event
See below for registration
Veranstalter
Bundesanstalt für Materialforschung und -prüfung
2nd Workshop on In-situ Monitoring and Microstructure Development in Additive Manufactured Alloys
We kindly invite you to the 2nd Workshop on In-situ Monitoring and Microstructure Development in Additive Manufactured Alloys at BAM (Bundesanstalt für Materialforschung und -prüfung) on April 19/20, 2021.
Within this online workshop via WebEx, we will present invited talks in addition to our results at BAM achieved within two internally funded additive manufacturing projects described below. We intend to initiate the discussion on the reliable use of additive manufacturing – particularly in safety-relevant applications – requiring an in-depth understanding of additive manufacturing processes and their products.
Below, you will find the draft program. This program is updated regularly.
Registration
For registration and for obtaining the link to the WebEx Meeting, please send an email to:
sekretariat-8.7@bam.de.
Project descriptions
Process Monitoring in Additive Manufacturing – ProMoAM
The quality of additively manufactured components is significantly influenced by the process parameters used during production. Thus, sensors and measuring systems are already commercially available for process monitoring, at least in metal-based additive manufacturing. However, it is not yet possible to detect defects and inhomogeneities directly or indirectly during the building process. The aim of the project ProMoAM is to develop spectroscopic and non-destructive testing methods for the in-situ evaluation of the quality of additively manufactured metal components in laser- or arc-based AM processes. In addition to passive and active methods of thermography, this includes optical tomography, optical emission spectroscopy, eddy current testing, laminography (radiography), X-ray backscattering, particle emission spectroscopy and photoacoustic methods.
Microstructural evolution in Additive Manufactured components: from powder to mechanical failure - AGIL
The transition from prototypes to serial production in additive manufacturing especially in the area of safety-relevant components is challenging because the effect of material properties and defects on the lifetime of additively manufactured components still requires greater understanding. For the BAM guideline "Safety in Technology and Chemistry", it is highly relevant that the microstructural ageing and residual stress evolution under mechanical loads, elevated temperatures and changing environmental conditions are systematically investigated to predict the reliability of additively manufactured components with regard to their damage mechanisms and their fracture behavior. The aim of this multidisciplinary project is to systematically investigate the material properties (including static and dynamic mechanical properties, residual stresses, 3D microstructure including crystal texture, 3D defect structure and simulations) of additive and conventionally produced samples over their full lifetime, from raw material to mechanical failure. The focus of the presentations is Austenitic Stainless Steel (AISI 316L) produced with Laser Powder Bed Fusion (L-PBF).
Programme
Day 1: April 19, 2021 In-situ Monitoring in AM | Day 2: April 20, 2021 Microstructure Development in AM | ||||
Moderation: U. Ganesh, S. J. Altenburg | 09:15 | U. Ganesh, BAM, Berlin, Germany Opening of the workshop | Moderation: K. Hilgenberg | 09:15 | K. Hilgenberg, BAM, Berlin, Germany Opening of the 2nd day and information about the BAM AM Competence Centre |
09:25 | S. J. Altenburg, BAM, Berlin, Germany Introduction to ProMoAM | 09:25 | A. Evans, BAM, Berlin, Germany Introduction to AGIL | ||
09:40 | H. Ehlers, BAM Berlin, Germany Online ET with MR sensor arrays for LPBF parts | 09:40 | K. Sommer, BAM, Berlin, Germany Microstructure characterisation of LPBF 316L and the evolution post heat treatment | ||
10:00 | T. Niendorf, Univ. Kassel, Kassel, Germany Direct microstructure design enabled by process control in | 10:00 | L. Avila, BAM, Berlin, Germany Creep behavior and microstructural evolution of LPBF 316L | ||
10:30 | Coffee break | 10:20 | Coffee break | ||
Moderation: N. Scheuschner | 10:50 | K. Wasmer, T. Quang-Le, G. Masinelli, S.A. Shevchik, EMPA, Artificial intelligence for default detection and process optimization | Moderation: G. Bruno | 10:50 | M. Attallah, B. Attard, S. Imbrogno, University of Birmingham, Birmingham, UK Control of Microstructure during Additive Manufacturing: Case Studies |
11:20 | P. Heinrich, ZIB, Berlin, Germany Thermography-based spatter analysis for selective laser melting of steel 316L | 11:20 | A. Charmi, BAM, Berlin, Germany Mechanical anisotropy of LPBF 316L: A modelling approach | ||
11:40 | S. Seeger, BAM, Berlin, Germany Aerosol characterization in AM - emission control and process monitoring | 11:40 | T. Fritsch, BAM, Berlin, Germany 3D Analysis of Powder for Laser Beam Melting by Synchrotron X-ray CT | ||
12:00 | Lunch break | 12:00 | Lunch break | ||
Moderation: C. Maierhofer | 13:00 | B. Dutton, MTC, Coventry, UK In-process Monitoring/Inspection for AM: The MTC’s Perspective | Moderation: M. Madia | 13:10 | B. Cai, University of Birmingham, Birmingham, UK In-situ Synchrotron and Neutron Characterization of LPBF Alloys: Case Studies |
13:30 | G. Mohr, BAM, Berlin, Germany Effects of inter layer time and build height on resulting properties of 316L stainless | 13:30 | A. Ulbricht, BAM, Berlin, Germany Tales from within: Residual stress and void formation in LPBF 316L | ||
13:50 | N. Scheuschner, BAM, Berlin, Germany Melt pool temperature measurement during the additive manufacturing of metals | 13:50 | M. Sprengel, BAM, Berlin, Germany The stability of residual stress in LPBF 316L | ||
14:10 | Coffee break | 14:10 | Coffee break | ||
Moderation: G. Mohr | 14:30 | B. Lane, H. Yeung, D. Deisenroth, T. Phan, NIST, Gaithersburg, USA In-situ Process Measurements for Monitoring, Control, and Simulation of Additive Manufacturing | Moderation: A. Evans | 14:30 | C. Körner, J. Pistor, J. Köpf, C. Breuning, M. Markl, FAU, Erlangen, Germany Numerical based design of AM microstructures |
15:00 | S. Altenburg, BAM, Berlin, Germany Unraveling thermal radiation by multispectral thermography: | 15:00 | T. Werner, BAM, Berlin, Germany Short crack propagation in 316L: Comparison of LPBF to wrought variant of the alloy | ||
15:20 | C. Maierhofer, BAM, Berlin, Germany Summary of in-situ monitoring in AM | 15:20 | G. Bruno, BAM, Berlin. Germany Summary of microstructure development in AM | ||
C. Maierhofer | 15:40 | Discussion: What are you expecting from in-situ monitoring? What are the needs? | 15:40 | Discussion: What is influencing the microstructure in AM? How can the microstructure be tailored? | |
Closure of day 1 | Closure of the workshop |