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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium 2017 Technical Division Young Professional Poster Competition
Presentation Title YP-7: Octo-Strain: A Novel Multiaxial Loading Device for In-situ Stress Measurements through Neutron Diffraction
Author(s) Justin Milner, Thomas Gnäupel-Herold
On-Site Speaker (Planned) Justin Milner
Abstract Scope We report on the design and first results from a novel mechanical loading device that was conceived specifically for measuring the applied stresses using neutron diffraction. The purpose of this device is to obtain multiaxial yield stresses of sheet metal samples at large magnitudes of strain. The full strain field is determined using a dedicated digital image correlation system (DIC); thus, the macroscopic plastic strain tensor is known precisely in the neutron gauge volume. The device is an eight-arm device called Octo-Strain that was designed for a variety of planar straining scenarios and large magnitudes of strain as compared to cruciform testing. Now possible strain paths are a plane strain expansion followed by another plane strain expansion at a 45-degree angle to the major strain axis. The ability of 360-degree rotation allows measurements for any in-plane orientation of the scattering vector for the determination of the stress tensor.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

YP-10: Effect of Neutron Irradiation on Friction Stir Processed ODS Alloys (MA956 and MA754)
YP-11: In Situ Ion Irradiation of Multilayer (TiN, TiAlN) Ceramic Coating for Accident Tolerant Zr-alloy Fuel Claddings
YP-12: Study of Magneto-optical Characteristics of Cerium Substituted Yttrium Iron Garnet Thin Films on Quartz Substrates
YP-1: Influence of Dissolved Oxygen Content on the Oxidation Behavior of Ni-based Alloys in High Temperature Water Vapor
YP-2: Isothermal and Non-isothermal Studies of Pt-Rh Thermocouple Failure Caused by Two Phosphorus Diffusion Mechanisms
YP-3: Effect of Hot Extrusion on Mechanical and Corrosion Properties of a MgCaSr Alloy
YP-4: Increased Shear Deformation through Friction Stir Back Extrusion of Mg AZ31B: Textural Evolution and Its Relationship to Mechanical Properties
YP-5 A Study of Brittle Fracture Mechanism of Non-quenched and Tempered N80 Tubing Used in Gas and Oil Well
YP-6: Commercial-ready Large Scale Manufacturing of Light-weight Aluminum Metal Matrix Composite
YP-7: Octo-Strain: A Novel Multiaxial Loading Device for In-situ Stress Measurements through Neutron Diffraction
YP-8: The Materials Science behind Ice Cream Making
YP-9: Body-centered Phase of Shock Loaded Single Crystal Copper

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