Abstract
ABSTRACT Throughout their useful life structures demand monitoring to verify their conditions of use. Thus, the need arises to seek methodologies capable to evaluate displacements and deformations in structural components of buildings. The objective of this research was to evaluate the use of the particle image velocimetry (PIV) technique to analyze test specimen behavior during a static bending test, additionally a displacement map is presented. The PIV technique measures variations of position of a region in an object from consecutive images from a loading session. The tests were performed on wood of Pinus oocarpa and Eucalyptus grandis, plywood panels, laminated veneer lumber (LVL) and oriented strand board (OSB). The results obtained by the PIV technique were compared to values obtained from dial indicators. It was verified that in all the materials tested, the PIV technique presented results similar to those found in the dial indicators. By means of the Student t test, with a significance level of 1%, some regions of analysis the values found by the PIV technique and the dial indicators were statistically similar. For the analyzed regions that did not achieve statistical equality, a correction equation was calculated (R² higher than 0.99). It was concluded that the PIV technique, with properly adjusted setup, presented results similar to those obtained in the conventional tests, proving its accuracy and reliability in displacement measurements, with the advantage of being a non-destructive and contactless structure monitoring technique.
Highlights
The maintenance, verification and analysis of materials under load are essential for the proper use of the structural parts in the construction systems
The methodologies and techniques currently used for measurements of deformations in structural parts are, in general, complex, having high operational and equipment costs and demands physical contact with structures that may be fixed in a difficult access area
The objective of this work was to evaluate the performance of the particle image velocimetry (PIV) technique when applied to displacement measurements in lumber (Eucalyptus grandis and Pinus oocarpa) and wood panels (Plywood, laminated veneer lumber (LVL) and oriented strand board (OSB)) in a static bending test, using manually painted particles
Summary
The maintenance, verification and analysis of materials under load are essential for the proper use of the structural parts in the construction systems. The methodologies and techniques currently used for measurements of deformations in structural parts are, in general, complex, having high operational and equipment costs and demands physical contact with structures that may be fixed in a difficult access area. The study and the use of new test techniques capable of measuring deformations becomes a good alternative to overcome the difficulties encountered in the field of structural maintenance. The problem with conventional analyses is related, to the delay in results, high number of samples needed, and high operational cost (Gouvêa et al, 2011), and to the restriction of using the UTM in the field
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
