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Meeting Materials Science & Technology 2020
Symposium Additive Manufacturing: Mechanical Behavior of Lattice Structures Produced via AM
Sponsorship TMS: Additive Manufacturing Committee
TMS: Mechanical Behavior of Materials Committee
Organizer(s) John S. Carpenter, Los Alamos National Laboratory
Matthew Begley, University of California, Santa Barbara
Sneha Prabha Narra, Carnegie Mellon University
Michael Groeber, Ohio State University
Isabella J. Van Rooyen, Pacific Northwest National Laboratory
Kyle L. Johnson, Sandia National Laboratories
Krishna Muralidharan, University of Arizona
Scope This symposium will provide a forum to discuss process-structure-property-performance relationships for additively manufactured open cell lattice structures. Additive manufacturing allows for the fabrication of complex geometries including open cell lattice structures that retain some similarities to closed cell structures like foams, but also have unique challenges. The mechanical properties of these structures are difficult to measure and provide significant challenges in analysis, from accurate measurements of strain to determining the applicable area under loading. Small feature dimensions can also lead to the breakdown of scale separation and cause significant property dependence on microstructure.

Improvements in measurement technique, witness coupon design, defect – failure mode connections, and material quality-strength connections are of interest to this symposium. Modeling efforts and topological optimization designed to inform design principles or for extracting enhanced understanding of process-structure-property-performance relationships are also of interest. The organizers view the lack of understanding of the process-structure-property-performance relationships as a key problem in making use of these lattices in structural applications.

Abstracts Due 05/31/2020

Additive Manufacturing Laser Powder Bed Fusion Optimization for Dissolvable Supports with SS 316L
Direct Metal Laser Sintering Strategies for Fabrication of Finer Resolution Cellular Structures
Effect of Processing on Micro/Mesoscale Structures and Properties of Stainless Steel 316L Lattices
High-Throughput Screening of Additive Lattices using a Deep Neural Network
Mechanical Properties of Additively Manufactured Metal Lattices
Mesoscale Open Structures for Lightweight Structures
Microstructure and Mechanical Properties of Additively Manufactured Lattice Structures of Co-Cr-Mo Alloy
Predicting Interfacial Cracking between Solid and Lattice Support Structure during Laser Powder Bed Fusion Processing
Predicting the Response of Additively Manufactured IN625 Thin-walled Elements
Process-Aware Design of Additively Manufactured Lattice Structures
Residual Stress Mitigation in Lattice Structures Built by Laser Powder Bed Fusion
Tailoring Hierarchical Material Performance Through Process Manipulation

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