Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bragg-Edge Elastic Strain Tomography for in situ Systems from
  Energy-Resolved Neutron Transmission Imaging   Technological developments in high resolution time-of-flight neutron
detectors have raised the prospect of tomographic reconstruction of elastic
strain fields from Bragg-edge strain images. This approach holds the potential
to provide a unique window into the full triaxial stress field within solid
samples. While general tomographic reconstruction from these images has been
shown to be ill-posed, an injective link between measurements and boundary
deformations exists for systems subject to in situ applied loads in the absence
of residual stress. Recent work has provided an algorithm to achieve
tomographic reconstruction for this class of mechanical system. This letter
details an experimental proof-of-concept for this algorithm involving the full
reconstruction of a biaxial strain field within a non-trivial steel sample.
This work was carried out on the RADEN energy resolved neutron imaging
instrument within the Japan Proton Accelerator Research Complex, with
validation through Digital Image Correlation and constant wavelength neutron
strain scans.

2
The categories of this paper are: math
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin