1 research outputs found
An investigation into sub-surface strain measurement using X-ray radioscopy
There are numerous techniques used to measure strain. Most are only capable of taking
surface measurements. The penetrating nature of X-rays has been used to measure
deformation, and thus strain, but only with radiographic images. Radioscopic techniques
are faster and do not require film processing, but produce less detailed results than
digitised radiographic images. The research covered by this thesis tested radioscopic
images and showed them to be suitable for strain measurement.
The thesis includes details of the design and capabilities of the radioscopic equipment. Pin
cushion distortion is a common feature of radioscopic images, and an automatic method of
identifying, and correcting for the distortion was implemented. [Continues.