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Journal ArticleDOI

Application of frequency response curvature method for damage detection in beam and plate like structures

01 Sep 2016-Vol. 149, Iss: 1, pp 012160
TL;DR: In this paper, a method is proposed to locate damage based on the estimation of curvatures of the frequency response functions (FRF's), which shows better performance in damage detection process.
Abstract: There has been a lot of research in recent years to find effective methods for damage detection in structures, usually in following steps: First, localization of damage and second, quantification of the severity of the damage. Present days, there are already a several methods to better understand this domain, some very simple, others quite sophisticated. In this paper, a method is proposed to locate damage based on the estimation of curvatures of the frequency response functions (FRF's). Similarly procedures have been developed in the past, using curvature method of mode shapes. However, the application of the curvatures of the FRF's shows better in damage detection process. Some numerical models like simple beam and plate are presented to estimate the efficiency of the proposed method.
Citations
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Journal ArticleDOI
TL;DR: In this article, a monitoring system based on the electromechanical impedance spectrum of piezoelectric transtructure is proposed for rotary aerospace structures, which is used for structural health monitoring.
Abstract: Structural health monitoring of rotary aerospace structures is investigated in this research. A monitoring system is proposed based on the electromechanical impedance spectrum of piezoelectric tran...

17 citations


Additional excerpts

  • ...…Cao and Ouyang, 2016; Chinde et al., 2016; Fan and Qiao, 2011; Feng et al., 2014; Giurgiutiu, 2014; Kaloop and Hu, 2015; Kharroub et al., 2015; Kumar and Reddy, 2016; Peters and Webb, 2015; Statham, 2011; Wang et al. (2016); Witos, 2008; Xu and Giurgiutiu, 2005, 2006; Yang and Fritzen, 2011a,…...

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Journal ArticleDOI
TL;DR: The residual error method is adapted to detect and locate damage in two-dimensional structures such as plates by substituting the eigenmodes and eigenvalues of the damaged structure and pinpoints the location of the damage and its relative severity.

8 citations

Book ChapterDOI
27 Jun 2022
TL;DR: In this article , a strain energy and flexibility matrix-based damage detection procedure is adopted to detect single as well multiple damages in a plate structure, where a 4-noded plate element is utilized to discretize the rectangular plate with 6° of freedom (dof) at every node.
Abstract: Plates like structural elements are commonly found in many structural applications and may undergo injury or damages during its service life. Identification, characterization, and detection of damages at the early stages in a plate structure avoid the further growth of damages and prevent the structural failure. In this paper, the strain energy and flexibility matrix-based damage detection procedure is adopted to detect single as well multiple damages in a plate structure. Toward this, a 4-noded plate element is utilized to discretize the rectangular plate with 6° of freedom (dof) at every node. The flexibility matrix is calculated using the natural frequency and mode shape. This method detects the damage in the plate by an increase in flexibility matrix of the damaged one. The damage indicator is then computed by evaluating the changes in strain energy of a structural plate using the coefficients of the flexibility matrices. The modal parameters were extracted from the FE analysis software Abaqus. Nine illustrative examples with damages at various locations are induced by decreasing the modulus of elasticity at the specified elements in plate structure, in order to determine the effectiveness of the method. The numerical result shows that the adopted damage detection procedure can be able to locate the structural damages in plates with lower modes, and the magnitude of the evaluated damage index depends on the severity of the damage.

1 citations

Book ChapterDOI
01 Jan 2021
TL;DR: In this paper, the authors propose methods for failure mitigation of railway tracks using a predefined strain gauge module-based network to secure railway networks, which is based on the same approach as in this paper.
Abstract: This chapter proposes methods for failure mitigation of railway tracks using a predefined strain gauge module-based network to secure railway networks.
References
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ReportDOI
01 May 1996
TL;DR: A review of the technical literature concerning the detection, location, and characterization of structural damage via techniques that examine changes in measured structural vibration response is presented in this article, where the authors categorize the methods according to required measured data and analysis technique.
Abstract: This report contains a review of the technical literature concerning the detection, location, and characterization of structural damage via techniques that examine changes in measured structural vibration response. The report first categorizes the methods according to required measured data and analysis technique. The analysis categories include changes in modal frequencies, changes in measured mode shapes (and their derivatives), and changes in measured flexibility coefficients. Methods that use property (stiffness, mass, damping) matrix updating, detection of nonlinear response, and damage detection via neural networks are also summarized. The applications of the various methods to different types of engineering problems are categorized by type of structure and are summarized. The types of structures include beams, trusses, plates, shells, bridges, offshore platforms, other large civil structures, aerospace structures, and composite structures. The report describes the development of the damage-identification methods and applications and summarizes the current state-of-the-art of the technology. The critical issues for future research in the area of damage identification are also discussed.

2,916 citations

Journal ArticleDOI
TL;DR: In this article, a new parameter called curvature mode shape is investigated as a possible candidate for identifying and locating damage in a structure, and it is shown that the absolute changes in the curvature shape are localized in the region of damage and hence can be used to detect damage.

1,924 citations

Journal ArticleDOI
TL;DR: In this article, a method of non-destructively assessing the integrity of structures using measurements of the structural natural frequencies is described, where measurements made at a single point in the structure can be used to detect, locate and quantify damage.
Abstract: A method of non-destructively assessing the integrity of structures using measurements of the structural natural frequencies is described. It is shown how measurements made at a single point in the structure can be used to detect, locate and quantify damage. The scheme presented uses finite-element analysis, since this method may be used on any structure. The principle may, however, be used in conjunction with other mathematical techniques. Only one full analysis is required for each type of structure.Results are presented from tests on an aluminium plate and a cross-ply carbon-fibre-reinforced plastic plate. Excellent agreement is shown between the predicted and actual damage sites and a useful indication of the magnitude of the defect is obtained.

1,379 citations

01 Jan 1997
TL;DR: In this article, the problem of using measured modal parameters to detect and locate damage in plate-like structures is investigated, and a method based on the changes in the strain energy of the structure is discussed.
Abstract: In this paper the problem of using measured modal parameters to detect and locate damage in plate-like structures is investigated. Many methods exist for locating damage in a structure given the modal properties before and after damage. Unfortunately, many of these methods require a correlated finite element model or mass normalized mode shapes. If the modal properties are obtained using ambient excitation then the mode shapes will not be mass normalized. In this paper a method based on the changes in the strain energy of the structure will be discussed. This method has been successfully applied to beam-like structures, that is, structures characterized by one-dimensional curvature. In this paper the method will be generalized to plate-like structures that are characterized by two-dimensional curvature. This method only requires the mode shapes of the structure before and after damage. To evaluate the effectiveness of the method it will be applied to simulated data.

390 citations

Journal ArticleDOI
TL;DR: In this paper, the problem of using measured modal parameters to detect and locate damage in plate-like structures is investigated, and a method based on the changes in the strain energy of the structure is discussed.

376 citations