Journal ArticleDOI
Measurement of vibrational modal parameters using laser pulse excitation techniques
TLDR
In this paper, the authors focused on the experimental evaluation of uncertainty sources in modal parameter measurement, when high-energy laser pulses are used to excite the vibration of the structure.About:
This article is published in Measurement.The article was published on 2004-03-01. It has received 33 citations till now. The article focuses on the topics: Modal analysis & Modal testing.read more
Citations
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Journal ArticleDOI
Structural health monitoring for a wind turbine system: a review of damage detection methods
TL;DR: The structural health monitoring (SHM) system is of primary importance because it is the structure that provides the integrity of the system, and the related non-destructive test and evaluation methods are discussed in this review.
Journal ArticleDOI
Experimental study of laser Doppler vibrometer and ambient vibration for vibration-based damage detection
TL;DR: In this paper, a two-laser system is employed for data acquisition using ambient response of the structure and modal parameters are estimated by the eigensystem realization algorithm, after first deriving the impulse response functions from both laser responses using the Natural Excitation Technique.
Journal ArticleDOI
Noncontact Operational Modal Analysis of Structural Members by Laser Doppler Vibrometer
TL;DR: The study shows that the presence of simulated damage in a steel connection can be detected by tracking the modal phase difference and by quantify- ing the additional stiffness and damping.
Journal ArticleDOI
Experimental investigation by laser ultrasonics for high speed train axle diagnostics
TL;DR: The applicability of a laser-ultrasonic procedure to improve the performances of train axle ultrasonic inspection is demonstrated, with the demonstration that the technique is suitable for the detection of surface defects purposely created on the train axle.
Journal ArticleDOI
Train wheel diagnostics by laser ultrasonics
TL;DR: In this paper, a laser-ultrasonic diagnostic measurement procedure has been designed for the inspection of the train wheels with the aid of a FE-model simulating the ultrasound propagation within the wheel itself.
References
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Book
Modal Testing: Theory and Practice
TL;DR: A survey of the technology of modal testing, a new method for describing the vibration properties of a structure by constructing mathematical models based on test data rather than using conventional theoretical analysis.
Journal ArticleDOI
Vibration measurements for diagnosis of structural defects on human teeth
TL;DR: In this article, a non-invasive measurement procedure for the diagnosis of structural defects on human teeth based on noncontact excitation and measurement of vibration by laser techniques is proposed and analyzed.
Journal ArticleDOI
Single pulse laser excitation of structural vibration using power densities below the surface ablation threshold
W.R. Philp,D.J. Booth,N.D. Perry +2 more
TL;DR: In this article, the authors describe sub-ablation optical excitation of flexural vibration in cantilevers and a suspended truck-wheel rim by using a single 600μs, Nd:glass laser pulse with energies between 1J and 40J.
Ambient Response Analysis of the Great Belt Bridge
TL;DR: In this article, an ambient response analysis of the Great Belt Bridge is presented, and the analysis is carried out in order to investigate the possibilities of estimating reliable damping values from the ambient response due to traffic and wind.
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