Energy-resolved neutron transmission imaging is used to reconstruct maps of residual strains in drilled and cold-expanded holes in 5-mm and 6.4-mm-thick aluminum plates. The possibility of measuring the positions of Bragg edges in the transmission spectrum in each 55 × 55 µm 2 pixel is utilized in the reconstruction of the strain distribution within the entire imaged area of the sample, all from a single measurement. Although the reconstructed strain is averaged through the sample thickness, this technique reveals strain asymmetries within the sample and thus provides information complementary to other well-established non-destructive testing methods.
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- Bragg edge imaging
- Neutron transmission
- Residual strain
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Computer Vision and Pattern Recognition
- Computer Graphics and Computer-Aided Design
- Electrical and Electronic Engineering