47 citations · 203 across the 15 of their papers we have counts for
15 papers
An essay on in neutron-based strain measurement techniques: equilibrium-based methods for non-destructive estimation
Christopher Wensrich, Giles Parkes, Vladimir Luzin +2
Determination of the stress-free reference lattice spacing, , is a central and often underestimated difficulty in diffraction-based strain measurement. Although commonly treat…
Radial Basis Functions and Improved Hyperparameter Optimisation for Gaussian Process Strain Estimation
A. W. T. Gregg, J. N. Hendriks, C. M. Wensrich +1
Over the past decade, a number of algorithms for full-field elastic strain estimation from neutron and X-ray measurements have been published. Many of the recently published algori…
Bayesian Non-parametric Bragg-edge Fitting for Neutron Transmission Strain Imaging
Johannes Hendriks, Nicholas O'Dell, Adrian Wills +3
Energy resolved neutron transmission techniques can provide high-resolution images of strain within polycrystalline samples allowing the study of residual strain and stress in engi…
Energy Resolved Neutron Imaging for Strain Reconstruction using the Finite Element Method
Riya Aggarwal, Mike Meylan, Bishnu Lamichhane +1
A pulsed neutron imaging technique is used to reconstruct the residual strain within a polycrystalline material from Bragg edge strain images. This technique offers the possibility…
Neutron Diffraction Strain Tomography: Demonstration and Proof-of-Concept
A. W. T. Gregg, J. N. Hendriks, C. M. Wensrich +2
Recently, a number of reconstruction algorithms have been presented for residual strain tomography from Bragg-edge neutron transmission measurements. In this paper, we examine whet…
Neutron diffraction strain tomography: 2D axisymmetric sample geometry
V. Luzin, A. W. T. Gregg, J. N. Hendriks +1
We consider a method for neutron residual strain/stress analysis combining features of transmission strain tomography (e.g. through Braggs edge imaging) and neutron diffraction tec…
Tomographic Reconstruction of Triaxial Strain Fields from Bragg-Edge Neutron Imaging
J. N. Hendriks, A. W. T. Gregg, R. R. Jackson +6
This paper presents a proof-of-concept demonstration of triaxial strain tomography from Bragg-edge neutron imaging within a three-dimensional sample. Bragg-edge neutron transmissio…
Neutron Transmission Strain Tomography for Non-Constant Stress-Free Lattice Spacing
J. N. Hendriks, C. Jidling, T. B. Schön +3
Recently, several algorithms for strain tomography from energy-resolved neutron transmission measurements have been proposed. These methods assume that the stress-free lattice spac…
A Bayesian Approach to Triaxial Strain Tomography from High-energy X-ray Diffraction
J. N. Hendriks, C. M. Wensrich, A. Wills
Diffraction of high-energy X-rays produced at synchrotron sources can provide rapid strain measurements, with high spatial resolution, and good penetrating power. With an uncollima…
Tomographic Reconstruction of Two-Dimensional Residual Strain Fields from Bragg-Edge Neutron Imaging
Alexander Gregg, Johannes Hendriks, Christopher Wensrich +7
Bragg-edge strain imaging from energy-resolved neutron transmission measurements poses an interesting tomography problem. The solution to this problem will allow the reconstruction…
Robust Inference of Two-Dimensional Strain Fields from Diffraction-based Measurements
J. N. Hendriks, C. M. Wensrich, A. Wills +2
Diffraction-based methods have become an invaluable tool for the detailed assessment of residual strain and stress within experimental mechanics. These methods typically measure a…
Implementation of Traction Constraints in Bragg-edge Neutron Transmission Strain Tomography
J. N. Hendriks, A. W. T. Gregg, C. M. Wensrich +1
Several recent methods for tomographic reconstruction of stress and strain fields from Bragg-edge neutron strain images have been proposed in the literature. This paper presents an…
Probabilistic modelling and reconstruction of strain
Carl Jidling, Johannes Hendriks, Niklas Wahlström +4
This paper deals with modelling and reconstruction of strain fields, relying upon data generated from neutron Bragg-edge measurements. We propose a probabilistic approach in which…
Deformation and Fabric in Compacted Clay Soils
Christopher Wensrich, Jubert Pineda, Vladimir Luzin +3
Hydro-mechanical anisotropy of clay soils in response to deformation or deposition history is related to the micromechanics of plate-like clay particles and their orientations. In…
Bragg-Edge Elastic Strain Tomography for in situ Systems from Energy-Resolved Neutron Transmission Imaging
J. N. Hendriks, A. W. T. Gregg, C. M. Wensrich +6
Technological developments in high resolution time-of-flight neutron detectors have raised the prospect of tomographic reconstruction of elastic strain fields from Bragg-edge strai…