Development of Speckle Interferometry Algorithm and System

Journal Article · Wed May 25 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3586969· OSTI ID:21513224

Shamsir, A A. M.; Jafri, M Z. M.; Lim, H S ^[1]

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1. Engineering Laboratory, School of Physics, Universiti Sains Malaysia, 11800 Penang (Malaysia)

Electronic speckle pattern interferometry (ESPI) method is a wholefield, non destructive measurement method widely used in the industries such as detection of defects on metal bodies, detection of defects in intergrated circuits in digital electronics components and in the preservation of priceless artwork. In this research field, this method is widely used to develop algorithms and to develop a new laboratory setup for implementing the speckle pattern interferometry. In speckle interferometry, an optically rough test surface is illuminated with an expanded laser beam creating a laser speckle pattern in the space surrounding the illuminated region. The speckle pattern is optically mixed with a second coherent light field that is either another speckle pattern or a smooth light field. This produces an interferometric speckle pattern that will be detected by sensor to count the change of the speckle pattern due to force given. In this project, an experimental setup of ESPI is proposed to analyze a stainless steel plate using 632.8 nm (red) wavelength of lights.

• OSTI ID: 21513224
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1341; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
ALLOYS
BEAMS
CARBON ADDITIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DETECTION
ELECTROMAGNETIC RADIATION
ELEMENTS
HIGH ALLOY STEELS
INTERFERENCE
INTERFEROMETRY
IRON ALLOYS
IRON BASE ALLOYS
LASER RADIATION
MATERIALS TESTING
MATHEMATICAL LOGIC
METALS
NONDESTRUCTIVE TESTING
PRESERVATION
RADIATIONS
SENSORS
STAINLESS STEELS
STEELS
SURFACES
TESTING
TRANSITION ELEMENT ALLOYS
WAVELENGTHS