EPSILON-MDS – A Neutron Time-of-Flight Diffractometer for Strain Measurements

Walther, K.; Frischbutter, A.; Scheffzük, Christian; Korobshenko, M.; Levshanovski, F.; Kirillov, A. K.; Astachova, N.; Mureshkevich, S.

doi:10.4028/www.scientific.net/ssp.105.67

Cited by 8 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Bragg diffraction line corresponds to (Walther et al 2005) at the fast pulsed research reactor IBR-2 in Dubna offers to investigate crystalline materials with lattice spacing up to d = 5.5 Å at high resolution, as required for our study. The diffractometer uses diffraction geometry of 2H = 90°and it is equipped with nine radial collimators, and each of the collimator is operated with nine detectors.…”

Section: Neutron Diffraction Residual Strain Measurementmentioning

confidence: 99%

“…The diffractometer uses diffraction geometry of 2H = 90°and it is equipped with nine radial collimators, and each of the collimator is operated with nine detectors. Combining the signals of the nine individual detectors using time focusing method (Walther et al 2005), nine sample directions on the DebyeScherrer-cone can be detected simultaneously. The timeanalyzer channel width is 32 ls to achieve a high resolution.…”

Section: Neutron Diffraction Residual Strain Measurementmentioning

confidence: 99%

See 1 more Smart Citation

The bowing potential of granitic rocks: rock fabrics, thermal properties and residual strain

et al. 2007

View full text Add to dashboard Cite

The bowing of natural stone panels is especially known for marble slabs. The bowing of granite is mainly known from tombstones in subtropical humid climate. Field inspections in combination with laboratory investigations with respect to the thermal expansion and the bowing potential was performed on two different granitoids (Cezlak granodiorite and Flossenbürg granite) which differ in the composition and rock fabrics. In addition, to describe and explain the effect of bowing of granitoid facade panels, neutron time-of-flight diffraction was applied to determine residual macro-and microstrain. The measurements were combined with investigations of the crystallographic preferred orientation of quartz and biotite. Both samples show a significant bowing as a function of panel thickness and destination temperature. In comparison to marbles the effect of bowing is more pronounced in granitoids at temperatures of 120°C. The bowing as well as the thermal expansion of the Cezlak sample is also anisotropic with respect to the rock fabrics. A quantitative estimate was performed based on the observed textures. The effect of the locked-in stresses may also have a control on the bowing together with the thermal stresses related to the different volume expansion of the rock-forming minerals.

show abstract

Section: Neutron Diffraction Residual Strain Measurementmentioning

confidence: 99%

Section: Neutron Diffraction Residual Strain Measurementmentioning

confidence: 99%

The bowing potential of granitic rocks: rock fabrics, thermal properties and residual strain

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The lattice strains in the studied materials were measured using a time of flight (TOF) neutron diffraction method on the EPSILON-MDS and FSD diffractometers [34,35] installed at the IBR-2 pulsed reactor in the JINR in Dubna (Russia). The example diffractograms obtained using both instruments are shown in Fig.…”

Section: Neutron Diffraction Measurementsmentioning

confidence: 99%

“…Additionally, the ex situ diffraction measurements were performed for the initial as well deformed/fractured samples using the second configuration with nine detector banks arranged around the sample at the EPSILON-MDS diffractometer (L1-L9) as shown in Fig. 3b [34]. In this case the tensile machine was removed and the measurements were performed for two sample positions, the first at the orientation shown in Fig.…”

Section: Neutron Diffraction Measurementsmentioning

confidence: 99%

Neutron Diffraction Study of Phase Stresses in Al/SiCp Composite During Tensile Test

et al. 2018

Self Cite

View full text Add to dashboard Cite

The stress partitioning between phases, phase stress relaxation as well as origins of Al/SiC p composite strengthening are studied in the present work. In this aim, the measurements of lattice strains by neutron diffraction were performed in situ during tensile test up to sample fracture. The experimental results were compared with results of elastic-plastic self-consistent model. It was found that thermal origin phase stresses relax at the beginning of plastic deformation of Al/SiC p composite. The evolution of lattice strains in both phases can be correctly simulated by the elastic-plastic self-consistent model only if the relaxation of initial stresses is taken into account. A major role in the strengthening of the studied composite plays a transfer of stresses to the SiC p reinforcement, however the hardness of Al metal matrix is also important.

show abstract

Evolution of phase stresses in Al/SiCp composite during thermal cycling and compression test studied using diffraction and self-consistent models

Kot

Baczmański

Gadalińska

et al. 2020

Journal of Materials Science & Technology

View full text Add to dashboard Cite

EPSILON-MDS – A Neutron Time-of-Flight Diffractometer for Strain Measurements

Cited by 8 publications

References 0 publications

The bowing potential of granitic rocks: rock fabrics, thermal properties and residual strain

The bowing potential of granitic rocks: rock fabrics, thermal properties and residual strain

Neutron Diffraction Study of Phase Stresses in Al/SiCp Composite During Tensile Test

Evolution of phase stresses in Al/SiCp composite during thermal cycling and compression test studied using diffraction and self-consistent models

Contact Info

Product

Resources

About