Speckle correlation methods applied to ballistics and explosives

Stephen G. Grantham; John E. Field

doi:10.1117/12.516571

27 May 2003 Speckle correlation methods applied to ballistics and explosives

Stephen G. Grantham, John E. Field

Proceedings Volume 4933, Speckle Metrology 2003; (2003) https://doi.org/10.1117/12.516571
Event: Speckle Metrology 2003, 2003, Trondheim, Norway

Abstract

Image correlation techniques developed for speckle metrology have recently been applied to a wide range of ballistics and explosives studies at the Cavendish Laboratory. White-light image correlation applied to quasi-static testing of explosives, at a range of magnifications, is discussed. High-speed ballistic measurements were performed using Digital Speckle Radiography (DSR): a combination of iamge correlation with flash X-rays to study the movement of a plane of X-ray opaque filings within a sample. DSR operates by capturing one image before and a second during the event, allowing the displacements on the plane to be measured to sub-mm accuracy. Varying the delay time and the depth of the seeded plane gives a full three-dimensional flow field in the sample. The use of two X-ray heads stereoscopically increases accuracy by allowing all three components of displacement to be determined. Measurements at velocities ranging from 100 m s^-1 to 6 km s^-1 have been achieved using this technique.

Citation Download Citation

Stephen G. Grantham and John E. Field "Speckle correlation methods applied to ballistics and explosives", Proc. SPIE 4933, Speckle Metrology 2003, (27 May 2003); https://doi.org/10.1117/12.516571

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available