S
Stephen G. Grantham
Researcher at University of Cambridge
Publications - 14
Citations - 167
Stephen G. Grantham is an academic researcher from University of Cambridge. The author has contributed to research in topics: Speckle pattern & Digital image correlation. The author has an hindex of 6, co-authored 14 publications receiving 163 citations.
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Journal ArticleDOI
High-strain rate Brazilian testing of an explosive simulant using speckle metrology
TL;DR: In this paper, a split Hopkinson pressure bar (SHPB) was used to perform dynamic Brazilian tests on PBS9501, an explosive simulant, with high-strain rate.
Journal ArticleDOI
Digital speckle radiography—a new ballistic measurement technique
TL;DR: Digital speckle radiography is a measurement technique which is capable of visualizing internal flow fields within an opaque material undergoing a ballistic impact as discussed by the authors, and it has been shown to be useful in the analysis of ballistic impact.
Journal ArticleDOI
Measurement of granular flow in a silo using Digital Speckle Radiography
TL;DR: In this article, the flow of a powder through a silo is investigated using Digital Speckle Radiography (DSR), which allows displacement measurements to be made on the sub-mm scale to an accuracy of 0.06 μm and spatial resolution of 26 μm.
Journal ArticleDOI
Novel measurements of material properties at high rates of strain using speckle metrology
TL;DR: The application of speckle metrology to high strain rate materials characterisation, through the use of appropriate high-speed photography, provides an exciting opportunity for measurements to be performed on materials, and in loading configurations, which were not previously possible.
Proceedings ArticleDOI
Speckle correlation methods applied to ballistics and explosives
TL;DR: In this article, a combination of iamge correlation with flash X-rays is used to study the movement of a plane of X-ray opaque filings within a sample, and the displacements on the plane can be measured to sub-mm accuracy.