Image analysis for monitoring of crack growth in hydropower concrete structures
(2009) In Measurement 42(6). p.878-893- Abstract
- A digital image analysis technique for crack monitoring using a standard web-camera has been further developed to acquire continuous data sets on crack development in concrete dams. The method is based on an existing robust and straightforward non-contact method for experimental deformation analysis. It allows for the measurement of suspected serious cracks, identified from inspections, through a sequence of images captured at intervals. The crack opening displacements at the surface of investigated objects are obtained by an algorithm that makes it possible to automatically track the motions of discrete markers painted on the object surface markers and compute their centre of mass in a sequence of images. The data acquisition process is... (More)
- A digital image analysis technique for crack monitoring using a standard web-camera has been further developed to acquire continuous data sets on crack development in concrete dams. The method is based on an existing robust and straightforward non-contact method for experimental deformation analysis. It allows for the measurement of suspected serious cracks, identified from inspections, through a sequence of images captured at intervals. The crack opening displacements at the surface of investigated objects are obtained by an algorithm that makes it possible to automatically track the motions of discrete markers painted on the object surface markers and compute their centre of mass in a sequence of images. The data acquisition process is straightforward and is well suited for this type of environment. Results from laboratory experiments and a field-test on a commuter bridge in Sweden are presented. The study implies that the technique can be useful for hydropower concrete structure applications. (C) 2009 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1441985
- author
- Bernstone, Christian LU and Heyden, A.
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Image analysis, Crack growth, Concrete structures, Monitoring, Dam
- in
- Measurement
- volume
- 42
- issue
- 6
- pages
- 878 - 893
- publisher
- Elsevier
- external identifiers
-
- wos:000266851200009
- scopus:67349244289
- ISSN
- 0263-2241
- DOI
- 10.1016/j.measurement.2009.01.007
- language
- English
- LU publication?
- yes
- id
- 2478f2d3-c498-4908-b2ae-0001f1e8fb54 (old id 1441985)
- date added to LUP
- 2016-04-01 11:50:32
- date last changed
- 2022-04-20 22:36:14
@article{2478f2d3-c498-4908-b2ae-0001f1e8fb54, abstract = {{A digital image analysis technique for crack monitoring using a standard web-camera has been further developed to acquire continuous data sets on crack development in concrete dams. The method is based on an existing robust and straightforward non-contact method for experimental deformation analysis. It allows for the measurement of suspected serious cracks, identified from inspections, through a sequence of images captured at intervals. The crack opening displacements at the surface of investigated objects are obtained by an algorithm that makes it possible to automatically track the motions of discrete markers painted on the object surface markers and compute their centre of mass in a sequence of images. The data acquisition process is straightforward and is well suited for this type of environment. Results from laboratory experiments and a field-test on a commuter bridge in Sweden are presented. The study implies that the technique can be useful for hydropower concrete structure applications. (C) 2009 Elsevier Ltd. All rights reserved.}}, author = {{Bernstone, Christian and Heyden, A.}}, issn = {{0263-2241}}, keywords = {{Image analysis; Crack growth; Concrete structures; Monitoring; Dam}}, language = {{eng}}, number = {{6}}, pages = {{878--893}}, publisher = {{Elsevier}}, series = {{Measurement}}, title = {{Image analysis for monitoring of crack growth in hydropower concrete structures}}, url = {{http://dx.doi.org/10.1016/j.measurement.2009.01.007}}, doi = {{10.1016/j.measurement.2009.01.007}}, volume = {{42}}, year = {{2009}}, }