Exploration of video-based structural health monitoring techniques.

Shariati, Ali; Schumacher, Thomas; Ramanna, Nakul

i

Exploration of video-based structural health monitoring techniques.

2014-10-01
By Shariati, Ali ; Schumacher, Thomas ; Ramanna, Nakul

File Language:

English

[PDF - 20.86 MB]

Details

Creators:

Shariati, Ali ; Schumacher, Thomas ; Ramanna, Nakul
Corporate Creators:

University of Delaware. Center for Innovative Bridge Engineering
Corporate Contributors:

Rutgers University ; Delaware. Dept. of Transportation ; United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

CAIT-UTC-038
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Rutgers University. Center for Advanced Infrastructure and Transportation
Abstract:

Structural health monitoring (SHM) has become a viable tool to provide owners with objective data for maintenance and repair. Traditionally, discrete contact sensors such as strain gages or accelerometers have been used ; for SHM. However, distributed remote sensors could be advantageous since they don’t require cabling and can ; cover an area rather than a limited number of discrete points. Digital image correlation (DIC) has been used ; successfully but has disadvantages in terms of complexity and computational costs when applied to vides. In this ; research project, we investigated and proposed a diﬀerent approach. The basic concept is that small changes in ; the intensity value of a monitored pixel with ﬁxed (or Eulerian) coordinates caused by the vibration of structures ; can be captured, even if it is not invisible to the naked eye. In this research report, we explain the basic concept ; and mathematical theory for our proposed so-called virtual visual sensors (VVS), we present a set of laboratory ; experiments to demonstrate the accuracy of the approach, and provide two practical monitoring examples of ; in-services bridges. Finally, we discuss future work to improve the current methodology.
Format:

PDF
Funding:

DTRT12-G-UTC16
Download URL:

https://rosap.ntl.bts.gov/view/dot/28581/dot_28581_DS1.pdf
File Type:

[PDF - 20.86 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:5e6cda64fc0ddb2e9e37865a7e0bf21cc27510c93630d8f0dc77f5ca135ea9c9f4b6542d74e59b168c1653e4e11bd8874be218576e7ad780fef586d6b656f85d

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.