Natural-frequency reduction model for matrix-dominated fatigue damage of composite laminates

Moon, Tae-Chul; Kim, Hyeung-Yun; Hwang, Woonbong

doi:10.1016/s0263-8223(03)00080-1

Cited by 25 publications

(4 citation statements)

References 10 publications

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“…Many studies have involved the monitoring of the mechanical characteristics and fatigue of various materials 30 – 45 . Some methods generate mechanical resonance in specimens by a bimorph piezoelectric plate-like actuator 31 or a hammer 32 , 33 . Displacement is then achieved by contact measuring using sensors attached to specimens 32 , 33 .…”

Section: Introductionmentioning

confidence: 99%

“…Some methods generate mechanical resonance in specimens by a bimorph piezoelectric plate-like actuator 31 or a hammer 32 , 33 . Displacement is then achieved by contact measuring using sensors attached to specimens 32 , 33 . Sound waves radiated from an ultrasonic transducer can also stimulate resonance when the frequency of incident waves equals the resonance frequency of a specimen 34 .…”

Section: Introductionmentioning

confidence: 99%

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Noninvasive low-cycle fatigue characterization at high depth with photoacoustic eigen-spectrum analysis

Gao

Tao

Zhu

et al. 2018

Sci Rep

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In this work, photoacoustic eigen-spectrum analysis was proposed for noninvasively characterizing the mechanical properties of materials. We theoretically predicted the relationship between the photoacoustic eigen-spectra of cylindrical optical absorbers and their mechanical properties. Experimental measurements of eigen-spectra extracted from photoacoustic coda waves agreed well with the theoretical predictions. We then applied the photoacoustic eigen-spectrum analysis for contactless monitoring of low-cycle fatigue damage. Experiments showed that the photoacoustic eigen-spectra were closely related to the degree of low-cycle fatigue. This study might enhance the contrast of photoacoustic imaging ford mechanical characterization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Noninvasive low-cycle fatigue characterization at high depth with photoacoustic eigen-spectrum analysis

Gao

Tao

Zhu

et al. 2018

Sci Rep

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“…The growth of the damage is strongly connected with the cyclic loading. That is why a new NDT fatigue prediction model for composite laminates is developed by Tae-Chul Moon [67]. They investigated the relationship between the natural frequency and the reduction of the flexural stiffness reduction.…”

Section: Fundamental Natural Frequencymentioning

confidence: 99%

Structural Health Monitoring (SHM) Methods in Machine Design and Operation

Barski¹,

Kędziora²,

Muc³

et al. 2014

Archive of Mechanical Engineering

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The present paper is devoted to the discussion and review of the non-destructive testing methods mainly based on vibration and wave propagation. In the first part, the experimental methods of actuating and analyzing the signal (vibration) are discussed.The piezoelectric elements, fiber optic sensors and Laser Scanning Doppler Vibrometer (SLDV) method are described. Effective detecting of the flaws needs very accurate theoretical models. Thus, the numerical methods, e.g. finite element, spectral element method and numerical models of the flaws in isotropic and composite materials are presented. Moreover, the detection of the damage in structures, which are subjected to cyclic or static loads, is based on the analyzing of the change in natural frequency of the whole structure, the change of internal impedance of the material and the change in guided waves propagating through the investigated structure. All these cases are characterized in detail. At the end of this paper, several applications of the structural health monitoring systems in machine design and operation are presented.

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“…The studies on other types of damages are relatively few. For matrix cracking usually caused by fatigue loads, Moon et al (2003) proposed a free vibration model of laminated composite beams with the matrix-dominated fatigue damage based on the classical laminate theory and linked the natural frequency reduction with the matrix damage. Kim and Hwang (2006) used the same concept but based on the Rayleigh method to predict the matrix damage for composite beams by impact response.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of laminated composite plates with damage using the perturbation method

Qiao

2015

Composites Part B: Engineering

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Natural-frequency reduction model for matrix-dominated fatigue damage of composite laminates

Cited by 25 publications

References 10 publications

Noninvasive low-cycle fatigue characterization at high depth with photoacoustic eigen-spectrum analysis

Noninvasive low-cycle fatigue characterization at high depth with photoacoustic eigen-spectrum analysis

Structural Health Monitoring (SHM) Methods in Machine Design and Operation

Vibration analysis of laminated composite plates with damage using the perturbation method

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