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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing: Equipment, Instrumentation and Measurement
Organizer(s) Ulf R. Ackelid, Freemelt AB
Ola L. Harrysson, North Carolina State University
Scope The purpose of this symposium is to review and discuss various aspects of equipment, instrumentation and measurement technology used for Additive Manufacturing (AM), from R&D to production applications. We welcome papers exploring existing solutions on commercial AM systems, as well as new innovative technologies which are still at a laboratory stage.

Suitable topics for this symposium include, but are not limited to, the following:
1. New methods, technologies, concepts and equipment for AM, such as
a. feedstock distribution
b. methods for consolidation
c. beam scanning algorithms
d. improvements of lasers, electron guns, print heads, etc.
e. build chamber environment
f. methods for improved process stability and repeatability
2. Innovative development of auxiliary instrumentation and methods intended for AM
3. In-situ process monitoring and control methods, such as
a. Monitoring of powder layer quality
b. Detection of porosity and other defects
c. In-process defect repair
d. Monitoring of dimensional accuracy (XY) and surface topography (Z)
e. Thermal monitoring and mapping
f. Real-time melt pool characterization
g. Evaporation loss measurement
h. Monitoring of vacuum quality, process gas purity and gas flow pattern
i. High-speed imaging of fast processes such as powder distribution, melt pool dynamics, spattering and electrostatic levitation
j. Monitoring of beam quality (laser or electron beam)
k. Detection of acoustic signals, optical emission, X-rays, backscatter electrons.

This symposium is limited to topics closely associated with the AM processes themselves. Thus equipment and technologies for powder manufacturing, powder recycling, post-processing of AM components and characterization of AM materials are better suited for other symposia at MS&T.

Abstracts Due 05/31/2020

A New Preheating Method for Electron Beam Powder Bed Fusion, Opening a Wider Range of Processable Feedstocks
Adaptive Multi-Beam Laser Additive Manufacturing (AMB-LAM) Technology: Instrumentation and Processes Development and Demonstration
Analysis of In-Situ, 3D Surround Digital Image Correlation with Mapped Thermography in Directed Energy Deposition
Benefits of In-situ Monitoring in Metal Additive Manufacturing
Characterization of 3D-printed Metals with Ultrasonic Technique
Combining In-situ Monitoring and X-ray Computed Tomography to Assess the Quality of Parts Manufactured by Powder Bed Fusion
Dynamics of Laser-powder-metal Interactions in L-PBF Captured by High Speed Imaging
In-Process Quality Control and Optimization for Ceramic 3D Printing
Investigations on Optical Emissions and Their Relation to Processing Parameters and Processing Regimes in The Laser Powder Bed Fusion Process
Machine Learning Enabled Acoustic Monitoring for Flaw Type Detection in Laser Powder Bed Additive Manufacturing
Mechanical In-situ ÁCT Testing of Lattice Structures Manufactured by Selective Laser Melting
Optical Emission Sensing for Laser-based Additive Manufacturing – What Are We Actually Measuring?
Polyspectral Analysis for In-situ Prediction of Deviations in Laser Powder Bed Fusion Additive Manufacturing
Real Time Monitoring of Electron Emissions during Electron Beam Powder Bed Fusion and Process Control for Arbitrary Geometries and Toolpaths
Using In-situ Process Monitoring Data to Identify Defective Layers in TI-6AL-4V Additively Manufactured Porous Biomaterials

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