Journal ArticleDOI
Monitoring pipe wall integrity using fiber Bragg grating-based sensing of low-frequency guided ultrasonic waves.
TLDR
Fiber Bragg gratings are shown to be effective in detecting changes to L(0,2) modal characteristics, providing a novel route to health monitoring of pipe assets.About:
This article is published in Ultrasonics.The article was published on 2018-06-19. It has received 14 citations till now. The article focuses on the topics: Fiber Bragg grating & Eccentricity (behavior).read more
Citations
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Journal ArticleDOI
Statistics-based baseline-free approach for rapid inspection of delamination in composite structures using ultrasonic guided waves
TL;DR: In this article , a baseline-free statistical approach for the identification and localization of delamination using sparse sampling and density-based spatial clustering of applications with noise (DBSCAN) technique is proposed.
Journal ArticleDOI
Long-distance structural health monitoring of buried pipes using pitch-catch T(0,1) wave piezoelectric ring array transducers.
TL;DR: A pair of pitch-catch piezoelectric ring arrays were proposed for long-distance structural health monitoring (SHM) of buried pipes and showed that after applying acoustical isolation layer on pipes, the proposed ring transducers can inspect buried pipes over 20 m.
Journal ArticleDOI
Multi-objective optimization for joint actuator and sensor placement for guided waves based structural health monitoring using fibre Bragg grating sensors.
TL;DR: In this paper, the authors developed a multi-objective optimization technique for the joint optimization of actuator and sensor placement for a network with Fibre Bragg grating (FBG) sensors.
Journal ArticleDOI
Multi-objective optimization for joint actuator and sensor placement for guided waves based structural health monitoring using fibre Bragg grating sensors
TL;DR: In this paper , the authors developed a multi-objective optimization technique for the joint optimization of actuator and sensor placement for a network with Fibre Bragg grating (FBG) sensors.
Journal ArticleDOI
Fiber bragg grating based detection of part-thickness cracks in bent composite laminates using feature-guided waves
TL;DR: In this paper, a fiber Bragg grating (FBG) based technique using feature-guided waves (FGW) was used for defect detection and identification in bent composite laminates.
References
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Journal ArticleDOI
Review of guided-wave structural health monitoring
TL;DR: This paper begins with an overview of damage prognosis, and a description of the basic methodology of guided-wave SHM, then reviews developments from the open literature in various aspects of this truly multidisciplinary field.
Journal ArticleDOI
The interaction of Lamb waves with defects
D. N. Alleyne,Peter Cawley +1 more
TL;DR: The results indicate that Lamb waves may be used to find notches when the wavelength to notch depth ratio is on the order of 40, and the 2-D Fourier transform method is used to quantify Lamb wave interactions with defects.
Journal ArticleDOI
The fundamental axioms of structural health monitoring
TL;DR: In this paper, the authors explicitly state and justify structural health monitoring axioms, and stimulate discussion and thought within the community regarding these axiomatizations, in order to facilitate new researchers in the field a starting point that alleviates the need to review the vast amounts of literature in this field.
Book ChapterDOI
Disperse: a general purpose program for creating dispersion curves
TL;DR: In this article, a general-purpose program that can create dispersion curves for a very wide range of systems and then effectively communicate the information contained within those curves is presented, using the global matrix method to handle multi-layered Cartesian and cylindrical systems.
Journal ArticleDOI
Time-frequency representations of Lamb waves.
TL;DR: The utility of using TFRs to quantitatively resolve changes in the frequency content of these nonstationary signals, as a function of time, is illustrated.