Special Interest Group Meeting: Advancing Precision in Additive Manufacturing

21st – 23rd September 2021


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Our joint Special Interest Group meeting between euspen and ASPE on Advancing Precision in Additive Manufacturing is held over 3 days and the daily programme is detailed below.  Please note that all times are shown in Central European Summer Time (CEST)

Printable Programme

Tuesday 21st September 2021

Time Programme
09:00 – 10:30Tutorial: Non-destructive testing for additive manufacturing (Part 1)
Ben Dutton, Manufacturing Technology Centre, UK
10:30 – 11:00Coffee break
11:00 – 12:30Non-destructive testing for additive manufacturing (Part 2)


13:00 – 13:05Welcome address: Richard Leach, euspen Vice President
13:05 – 13:15Welcome address by meeting chair:   John Taylor, University of North Carolina at Charlotte, US
13:15 – 13:45Keynote: Next generation design for additive manufacturing and how the technologies need to adapt
Bernhard Mueller, Fraunhofer IWU, DE
13:45 – 14:45


Chair:  John Taylor

Session 1: Industrial application & process optimization

 13:45     Printing miniature valves by micro-SLA for soft robotics
Florent Boudoire, CSEM, CH  

 14:00     Influence of the CNC behaviour on the laser spot trajectory in LPBF process
Kévin Godineau, ENS Paris-Saclay, FR 

 14:15     Toward specification of complex additive manufactured metal surfaces for optimum heat transfer
Kuldeep Mandloi, University of North Carolina at Charlotte, US 

 14:30     Surface topography process signatures in nickel superalloy 625 additive manufacturing
Jason Fox, National Institute of Standards and Technology, US; Angela Allen, UNC Charlotte, US; Brigid Mullany, UNC Charlotte, US; Edward Morse, UNC Charlotte, US; Romaine Isaac, Zeiss, US; Marc Lata, UNC Charlotte, US; Aarush Sood, UNC Charlotte, US; Chris Evans, UNC Charlotte & NIST, US

14:45 – 15:05 Coffee and debate on Industrial application & process optimization
15:05 – 15:20Coffee break
15:20 – 15:50Keynote: Transforming the supply chain of metal components for industrial gas turbines through the new possibilities of additive manufacturing
Marco Salvisberg, GF Casting Solutions, CH
15:50 – 16:35


Chair: Geoff McFarland

Session 2: Integration of AM into a holistic manufacturing process

15:50     Improving additive manufactured surfaces properties with post processing techniques
Matthieu Rauch, Centrale Nantes, FR 

 16:05     Computer vision based zero point estimation for hybrid builds in metal additive manufacturing
Jakob Wilm, University of Southern Denmark, DK 

 16:20     Accuracy and microstructure of additively manufactured and post‐machined parts
Hans-Christian Moehring, Institute for Machine Tools – University of Stuttgart, DE

16:35 – 16:55Coffee and debate on Integration of AM into a holistic manufacturing process

Wednesday 22nd September 2021

09:00 – 09:25SOTA:  Precision engineering challenges in micro/nanoscale additive manufacturing
Michael A. Cullinan, University of Texas at Austin, US
09:25 – 09:55

Chair: Michael A Cullinan

Session 3:  Focus on micro-nano

09:25       Insights into challenges and potentials of two-photon lithography
Stefan Kühne, TU Berlin, DE  

09:40       Characterizing shrinkage and quality of ceramic two-photon printed microstructures
John Cortes Gutierrez, Lawrence Livermore National Laboratory, US   

09:55 – 10:10Coffee and debate on Focus on micro-nano
10:10 – 11:40

Chair: Filippo Zanini

Session 4:  Focus on lattice structures   (Part 1)

10:10      Direct additive manufactured beam shape defect identification from computed tomography and modal decomposition
Marc-Antoine de Pastre, LURPA, ENS Paris-Saclay, FR 

10:25      A two step modelling approach to limit the exploitable AM parameter space and optimized parameter selection for finest lattice structures using LPBF
Hannes Korn, Fraunhofer Institute for Machine Tools and Forming Technology IWU, DE

10:40 – 11:00Coffee break
11:00 – 11:45


Session 4:  Focus on lattice structures   (Part 2)

11:00      Influence of the processing parameters on the dimensional accuracy of In625 lattice structures made by laser powder bed fusion
Lucas Fournet-Fayard, LNE, FR 

11:15      Design and measurement strategy of additive manufacturing lattice benchmark artefact
Mohamed Younes Chahid, University of Huddersfield, UK

11:30      Testing the similarity conditions in the CT measurement of additively manufactured lattice structures
Maxwell Praniewicz, National Institute of Standards and Technology, US      

11:45 – 12:10Coffee and debate on Focus on lattice structures
12:10 – 12:45Lunch break
12:45 – 13:00Commercial Session

  • Renishaw
  • Taraz Metrology
  • GrindoSonic BV
13:00 – 14:00


Chair: Adam Thompson

Poster session

Surface irregularities of metal SLM part with different surface inclinations and their impact on surface texture characterization
Shubhavardhan Ramadurga Narasimharaju, EPSRC Future Metrology Hub – University of Huddersfield, UK  

Topology optimization for additive manufacturing
Didier Talamona, Nazarbayev University, KZ

Precise additive methods applications in micro and nano – parts manufacturing – a review
Adam Ruszaj, Cracow University of Technology, PL

Prediction of dimensional accuracy and warpage of additive manufactured parts using finite element model
Daniyar Syrlybayev, Nazarbayev University, KZ 

Micro-replication of high precision optically enhanced moulds fabricated by multiphoton polymerization
Sara Maria Vidal Álvarez, AIMEN, ES

High-resolution X-ray computed tomography for additive manufacturing: Towards traceable porosity defect measurements using digital twins
Benjamin A. Bircher, Federal Institute of Metrology METAS, CH

Impulse excitation technique for improved inspection in additive manufacturing
Juan Jose Bustos, Grindosonic, BE

Dimensional accuracy of an artifact for rapid casting
Muslim Mukhtarkhanov, Nazarbayev University, School of Eng and Digital sciences, KZ 

Enhancing surface finish consistency by novel ECM process on SLM AM components
Ahmed Tawfik, Huddersfield University, UK

Application of metal additive manufacturing material extrusion in the production of tool inserts for polymer profile extrusion die surface roughness investigation
Martin Kain, Technical University of Denmark, DK 

14:00 – 14:25SOTA:  In-process measurement methods for defect identification in metal powder bed fusion
Afaf Remani, University of Nottingham, UK
14:25 – 14:55

Chair: Richard Leach


Session 5:  In-process metrology and data fusion   (Part 1)

14:25       Smart machines for fused filament fabrication based on multi-sensor data fusion, digital twins and machine learning
Arianna Rossi, University of Perugia, IT  

14:40       Fast measurement of metal laser powder bed fusion layer surfaces using light scattering and principal component analysis
Mingyu Liu, University of Nottingham, UK   

14:55 – 15:15Coffee break
15:15– 16:00


Session 5:  In-process metrology and data fusion   (Part 2)

15:15     Stereo camera based in-situ monitoring of L-PBF process stability by spatter detection
Daniel Brummerloh, Fraunhofer Research Institution for Additive Manufacturing Technologies IAPT, DE 

15:30     Design of a multi-sensor measurement system for in-situ defect identification in metal additive manufacturing
Afaf Remani, University of Nottingham, UK     

15:45     Establishing an analytical framework of fringe projection with enhanced measurement performance specifically for powder bed fusion additive manufacturing process
Yubo Xiong, University of Pittsburgh, US     

16:00– 16:30Coffee and debate on In-process metrology and data fusion


Thursday 23rd September 2021

09:00 – 09:30Keynote:  Evaluation of hybrid AM technology chains considering process accuracies for the integration into industrial production
Martin Schaefer, Siemens AG, DE
09:30 – 09:55SOTA: Machine learning for precision engineering
Joe Eastwood, University of Nottingham, UK
09:55 –10:25

Chair: Liam Blunt

Session 6:  Metrology (Part 1)

09:55       Direct part density inspection in laser powder bed fusion using eddy current
Adriaan Spierings, Inspire AG – innovation centre for additive manufacturing, CH  

10:10       Analysis of metal powder geometrical characteristics influencing the quality of additively manufactured parts
Filippo Zanini, University of Padova, IT  

10:25 – 10:45Coffee break

10:45 – 11:45

Session 6:  Metrology (Part 2)

10:45      Comparison of dimensional measurements from images acquired by synchrotron tomography with VGSTUDIO MAX and ImageJ
Charles Cayron, LNE, FR  

11:00       Quantifying the influence of local porosity on the colour differences of dyed laser sintered polyamide-12 with X-ray CT
Simon Bellens, Materialise NV, BE   

11:15       Characterisation of high speed sintering surface topography with re-entrant open surface pores using 3D surface texture parameters and material ratio curve
Shan Lou, Future Metrology Hub, University of Huddersfield, UK

11:30     Exploratory research on the correlation of probability of detection and image quality during the tomographic characterisation of additive manufacturing defects
Mirko Sinico, KU Leuven, BE  

11:45 – 12:15Coffee and debate on Metrology
12:15 – 12:35Closing remarks by Richard Leach, University of Nottingham & John Taylor, University of North Carolina at Charlotte, US
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