New Developments of the Materials Science Diffractometer STRESS-SPEC

Joana Rebelo-Kornmeier; Michael Hofmann; Wei Min Gan; Christian Randau; Karl Braun; Karl Zeitelhack; Ilario Defendi; Jens Krueger; Enrico Faulhaber; H.G. Brokmeier

doi:10.4028/www.scientific.net/MSF.905.151

Paper Titles

Designing and Validating Parallel Wire Suspension Bridge Wire Strands for Neutron Diffraction Stress Mapping
p.123

Experimental Comparison of In-Depth Residual Stresses Measured with Neutron and X-Ray Diffraction with a Numerical Stress Relaxation Correction Method
p.131

In Situ Stress Measurements during Welding Process
p.137

Minimizing and Characterizing Uncertainties in Neutron Strain Measurements with Special Attention to Grain Size Effects
p.143

New Developments of the Materials Science Diffractometer STRESS-SPEC
p.151

Scanning Three-Dimensional X-Ray Diffraction Microscopy with a High-Energy Microbeam at SPring-8
p.157

Neutron Through-Thickness Stress Measurements in Coatings with High Spatial Resolution
p.165

Residual Stress Depth Distributions for Atmospheric Plasma Sprayed MnCo_1.9Fe_0.1O₄ Spinel Layers on Crofer Steel Substrate
p.174

The X-Ray Micro-Tomography Backed by Molecular Dynamics Simulations in the Analysis of Shock-Induced Damage in Ductile Materials
p.182

HomeMaterials Science ForumMaterials Science Forum Vol. 905New Developments of the Materials Science...

New Developments of the Materials Science Diffractometer STRESS-SPEC

Abstract:

The high flux neutron diffractometer STRESSSPEC at FRM II, Garching Germany, offers a flexible instrument setup suitable for fast and surface residual strain measurements. Likewise bulk, local or gradient texture analyses are feasible. Here improvements of the hardware (detector, slits) of the instrument as well as developments on methods for residual stress analysis are presented. A new detector system developed inhouse was recently installed and successfully commissioned. Compared to the original delay line detector the new detector provides much higher resolution and allows event mode type measurements. Results of the commissioning measurements show a performance increase of nearly a factor of 2 compared to the former detector. Moreover the new analytical model, recently developed for surface spurious strain corrections, was successfully applied at a welded austenitic steel sample. Thus nondestructive measurements from the surface (200 μm) into the bulk (several millimeters) are possible without any extra time consuming experiments for spurious strains corrections.

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Materials Science Forum (Volume 905)

Pages:

151-156

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.905.151

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Online since:

August 2017

Authors:

Joana Rebelo-Kornmeier*, Michael Hofmann, Wei Min Gan, Christian Randau, Karl Braun, Karl Zeitelhack, Ilario Defendi, Jens Krueger, Enrico Faulhaber, H.G. Brokmeier

Keywords:

Neutron Diffraction, Position Sensitive Detector, STRESS-SPEC, Surface Strains

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