Measurement of Local Deformations in Steel Monostrands Using Digital Image Correlation

The local deformation mechanisms in steel monostrands have a significant influence on their fatigue life and failure mode. However, the observation and quantification of deformations in monostrands experiencing axial and transverse deformations is challenging because of their complex geometry, difficulties with the placement of strain gauges in the vicinity of the anchorage, and, most importantly, the relatively small magnitude of deformation occurring in the monostrand. This paper focuses on the measurement of localized deformations in high-strength steel monostrands using the digital image correlation (DIC) technique. The presented technique enables the measurement of individual wire strains along the length of the monostrand and also provides quantitative information on the relative movement between individual wires, leading to a more in-depth understanding of the underlying fatigue mechanisms. To validate the proposed image-based measurement method, two different tests were performed, with the one correlation method showing good agreement. Data collected from the DIC technique creates a basis for the analysis of the fretting and localized bending behavior of the monostrand and provides relevant information on the internal state of displacement of the monostrand under bending load.

• Record URL:
  • https://doi.org/10.1061/(ASCE)BE.1943-5592.0000615
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/32947845
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Authors:
  • Winkler, Jan
  • Fischer, Gregor
  • Georgakis, Christos T
• Publication Date: 2014-10

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04014042
• Serial:
  • Journal of Bridge Engineering
  • Volume: 19
  • Issue Number: 10
  • Publisher: American Society of Civil Engineers
  • ISSN: 1084-0702
  • Serial URL: http://ojps.aip.org/beo

Subject/Index Terms

• TRT Terms: Axial compression; Bending stress; Bridges; Cables; Deformation; Fatigue strength; Fretting corrosion; Nondestructive tests; Photogrammetry; Steel; Strain gages; Structural health monitoring
• Subject Areas: Bridges and other structures; Highways; Materials; I34: Steels and Metals;

Filing Info

• Accession Number: 01526568
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: May 29 2014 9:28AM