Image based non-contact deformation measuring technique

Mallikarachchi, HMYC; Perera, GAU

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dc.contributor.author	Mallikarachchi, HMYC
dc.contributor.author	Perera, GAU
dc.date.accessioned	2015-05-27T10:07:48Z
dc.date.available	2015-05-27T10:07:48Z
dc.date.issued	2015-05-27
dc.identifier.uri	http://dl.lib.mrt.ac.lk/handle/123/10851
dc.description.abstract	Deformation and strain measurements play a vital role in civil engineering. The current practice is to use dial gauges to measure deformation over a large area and strain gauges when interested in a localised point of a structure. Both techniques use a contact based approach which may damage or introduce a significant change in structural response depending on material and structural properties. Digital Image Correlation (DIC) is a non-contact imaged based technique where the deformation of a specimen is determined by calculating changes in two images taken before and after applying a certain load. An automated software programme is developed to capture a given target and calculate the deformation using difference between two photographs taken during an experiment. Software outcome was verified against a dial gauge with 0.01 mm minimum count.
dc.language.iso	en	en_US
dc.title	Image based non-contact deformation measuring technique	en_US
dc.identifier.faculty	Engineering	en_US
dc.identifier.department	Department of Civil Engineering	en_US
dc.identifier.year	2013	en_US
dc.identifier.conference	International Conference on Structural Engineering and Construction Management [4th]	en_US
dc.identifier.place	Kandy	en_US
dcterms.abstract	Deformation and strain measurements play a vital role in civil engineering. The current practice is to use dial gauges to measure deformation over a large area and strain gauges when interested in a localised point of a structure. Both techniques use a contact based approach which may damage or introduce a significant change in structural response depending on material and structural properties. Digital Image Correlation (DIC) is a non-contact imaged based technique where the deformation of a specimen is determined by calculating changes in two images taken before and after applying a certain load. An automated software programme is developed to capture a given target and calculate the deformation using difference between two photographs taken during an experiment. Software outcome was verified against a dial gauge with 0.01 mm minimum count.