Showing papers in "Case Studies in Nondestructive Testing and Evaluation in 2014"

TL;DR: In this article, the authors present a methodology and application to evaluate and monitor the structural deterioration of railway turnout systems in an Australian urban rail network, which has integrated numerical train/track simulations, axle box acceleration and ride quality data obtained from the calibrated track inspection vehicle.

TL;DR: In this article, the authors present a case study about the monitoring of a pre-stressed reinforced concrete viaduct in Bari (Italy), by means of an optical fiber system embedded into the structural elements.

TL;DR: In this paper, a low-profile flexible ultrasonic array and a shape sensing fiber are used to measure the location of the elements in the array as it conforms to a curved surface, which enables the accurate ultrasonic imaging and inspection of components with complex geometries for sub-surface defects.

TL;DR: In this article, the authors evaluated the structural performance of light-weight bridges based on experimental dynamic analysis and found that codes could overestimate the level of vibration in this kind of footbridge.

TL;DR: In this paper, an approach to estimate the elastic property of epoxy layer in a steel-epoxy-concrete bonding layered medium is proposed, by solving dispersion equations, the analytical dispersion curves are plotted.

TL;DR: In this article, the authors presented a study on the seismic assessment of a 21-story building having an asymmetrical plan and applied the approach using in-situ measurements to assess the building's seismic performance.

TL;DR: In this paper, the behavior and ability of this method to detect damages, in a homogenous material are studied for its effective utilization in structural health monitoring, and the observations are discussed using RMSD as damage index computed between pristine and damaged states.

TL;DR: In this paper, an approach to detect misaligned dowel bars in concrete pavements using GPR is proposed, which addresses all forms and combinations of dowel misalignment.

TL;DR: The Magnetic Rope Testing (MRT) is a non-destructive method in use for the detection of flaws and cracks in steel wire ropes as discussed by the authors, and a proper methodology operating in accordance with new European standard specifications is presented.

TL;DR: In this paper, the authors applied the laser-ultrasonic method for nondestructive evaluation of the depth of the subsurface damage in machined silicon wafers, based on different mechanisms of laser excitation of ultrasound by absorption of Q-switched Nd:YAG laser pulses at the fundamental wavelength.

TL;DR: In this article, the authors investigated the possibility of simultaneous non-destructive evaluation of material degradation and detection of sub-millimeter sized defects using magnetic methods, and confirmed by FEM simulation that assessment of both degradation and small defects in steel is possible using a single-yoke probe.

TL;DR: In this paper, deconvolution processing was proposed to enhance the acoustic wavefield interpretation by increasing the temporal resolution of the underlying ultrasound signals, which allowed improved non-destructive assessment of the defect.

TL;DR: In this paper, in-situ video recording was used to predict wire failure in single and multi-strand configurations, and the results showed that video recording appears to be the most promising of the methods investigated.

TL;DR: In this article, a nonintrusive measuring system is proposed to monitor the integrity of ground anchor support for utility poles, where the anchor rod with a terminal buried plate attached can be measured periodically with an accelerometer.