Image based non-contact deformation measuring technique
| 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.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.identifier.conference | International Conference on Structural Engineering and Construction Management [4th] | en_US |
| dc.identifier.department | Department of Civil Engineering | en_US |
| dc.identifier.faculty | Engineering | en_US |
| dc.identifier.place | Kandy | en_US |
| dc.identifier.uri | http://dl.lib.mrt.ac.lk/handle/123/10851 | |
| dc.identifier.year | 2013 | en_US |
| dc.language.iso | en | en_US |
| dc.title | Image based non-contact deformation measuring technique | 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. |