Optical Detection of Mechanical Vibration
Lecture Notes in Civil Engineering, ISSN: 2366-2565, Vol: 515 LNCE, Page: 673-680
2024
- 1Citations
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
- Citations1
- Citation Indexes1
- CrossRef1
Conference Paper Description
The experimental assessment of modal frequencies (shapes and damping) of structures is generally performed in terms of acceleration, velocity or displacement by using respectively accelerometers, velocimeters (also known as seismometers of geophones) or interferometers (laser scanner and similar). These are not, however, the only possible approaches. In this work some results than can be achieved by using normal video-cameras currently on the market (passive optical methods) are presented. Two types of approach are possible in this case: Lagrangian or Eulerian. Digital Image Correlation is a quite well known Lagrangian approach, but its application is more frequently restricted to laboratory conditions, due also to the impact of variable illumination in outdoor environments. Optical Flow methods are less known Eulerian approaches, with a number of limitations when their underlying assumptions do not hold. In this paper, some original variations within these main categories are studied and applied to a real structure. In all cases it is necessary to achieve sub-pixel resolution, because the movement of civil structures is often smaller or much smaller than the real size covered by a pixel. Limits and possible future developments of the proposed techniques are then discussed.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85200467364&origin=inward; http://dx.doi.org/10.1007/978-3-031-61425-5_64; https://link.springer.com/10.1007/978-3-031-61425-5_64; https://dx.doi.org/10.1007/978-3-031-61425-5_64; https://link.springer.com/chapter/10.1007/978-3-031-61425-5_64
Springer Science and Business Media LLC
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