19/04/2021 09:15 AM


20/04/2021 03:30 PM


Online event

See below for registration

Organized by

Bundesanstalt für Materialforschung und -prüfung

Optical measurement methods: Thermographic snapshot of the melt pool (left), optical tomography (right)

Optical measurement methods: Thermographic snapshot of the melt pool (left), optical tomography (right)

Source: BAM, Fachbereich Thermografische Verfahren

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.


For registration and for obtaining the link to the WebEx Meeting, please send an email to:

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).



Day 1: April 19, 2021

In-situ Monitoring in AM

Day 2: April 20, 2021

Microstructure Development in AM


U. Ganesh, BAM, Berlin, Germany

Opening of the workshop


K. Hilgenberg, BAM, Berlin, Germany

Opening of the 2nd day and information about the BAM AM Competence Centre

09:25S. Altenburg, BAM, Berlin, Germany
Introduction to ProMoAM

A. Evans, BAM, Berlin, Germany

Introduction to AGIL

09:40H. Ehlers, BAM Berlin, Germany
Online ET with MR sensor arrays for LPBF parts

K. Sommer, BAM, Berlin, Germany

Microstructure characterisation of LPBF 316L and the evolution post heat treatment


T. Niendorf, University of Kassel, Kassel, Germany

Direct microstructure design enabled by process control in additive manufacturing – From conventional to functional alloys


L. Avila, BAM, Berlin, Germany

Creep behavior and microstructural evolution of LPBF 316L

10:30Coffee break10:20Coffee break

K. Wasmer, T. Quang-Le, G. Masinelli, S.A. Shevchik, EMPA, Thun, Switzerland

Artificial intelligence for default detection and process optimization in additive manufacturing


M. Attallah, B. Attard, S. Imbrogno, University of Birmingham, Birmingham, UK

Control of Microstructure during Additive Manufacturing: Case Studies


P. Heinrich, BAM, Berlin, Germany

Thermography-based spatter analysis for selective laser melting of steel 316L


A. Charmi, BAM, Berlin, Germany

Mechanical anisotropy of LPBF 316L: A modelling approach


S. Seeger, BAM, Berlin, Germany

Aerosol characterization in AM - emission control and process monitoring


T. Fritsch, BAM, Berlin, Germany

3D Analysis of Powder for Laser Beam Melting by Synchrotron X-ray CT

12:00Lunch break12:00Lunch break

B. Dutton, MTC, Coventry, UK

In-process Monitoring/Inspection for AM: The MTC’s Perspective


B. Cai, University of Birmingham, Birmingham, UK

In-situ Synchrotron and Neutron Characterization of LPBF Alloys: Case Studies


G. Mohr, BAM, Berlin, Germany

Effects of inter layer time and build height on resulting properties of 316L stainless steel processed by laser powder bed fusion


A. Ulbricht, BAM, Berlin, Germany

Tales from within: Residual stress and void formation in LPBF 316L


N. Scheuschner, BAM, Berlin, Germany

Melt pool temperature measurement during the additive manufacturing of metals by means of IR spectroscopy and thermography


M. Sprengel, BAM, Berlin, Germany

The stability of residual stress in LPBF 316L

14:10Coffee break14:10Coffee break
14:30B. Lane, Ho Yeung, David Deisenroth, Thien Phan, NIST, Gaithersburg, USA
In-situ Process Measurements for Monitoring, Control, and Simulation of Additive Manufacturing

C. Körner, J. Pistor, J. Köpf, C. Breuning, M. Markl, FAU, Erlangen, Germany

Numerical based design of AM microstructures


S. Altenburg, BAM, Berlin, Germany

Unraveling thermal radiation by multispectral thermography: Real temperatures in LMD


T. Werner, BAM, Berlin, Germany

Short crack propagation in 316L: Comparison of LPBF to wrought variant of the alloy


C. Maierhofer, BAM, Berlin, Germany

Summary of in-situ monitoring in AM


G. Bruno, BAM, Berlin. Germany

Summary of microstructure development in AM

15:40Discussion: What are you expecting from in-situ monitoring? What are the needs?15:40Discussion: What is influencing the microstructure in AM? How can the microstructure be tailored?
 Closure of day 1 Closure of the workshop