Vibration-Based Model-Dependent Damage (Delamination) Identification and Health Monitoring for Composite Structures — A Review

Zou, Youlan; Tong, Liyong; Steven, Grant P.

doi:10.1006/jsvi.1999.2624

Cited by 659 publications

(355 citation statements)

References 53 publications

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“…The above reasons undoubtedly make it difficult to monitor the vibration fatigue damage of the composite in the test in real time, and it is also difficult to define the critical point of fatigue failure of the specimen, which makes it difficult to study the fatigue problem of the composites. The relationship between the modal parameters and the fatigue damage of the structure was studied by Adams et al [26][27][28][29], Kim et al [30,31], Salawu [32], Owolabi et al [33], and Zou et al [34] in the 1990s. The identification and detection of the material damage could be realized by monitoring the natural frequency and modal parameters of the structure.…”

Section: Online Monitoring Of Fatigue Damagementioning

confidence: 99%

Experimental Research on Vibration Fatigue of CFRP and Its Influence Factors Based on Vibration Testing

Fan

Jiang

Zhang

et al. 2017

Shock and Vibration

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A new research method based on vibration testing for the vibration fatigue of FRP was proposed in this paper. Through the testing on a closed-loop controlled vibration fatigue test system, the vibration fatigue phenomenon of typical carbon-fiber-reinforced plastic (CFRP) cantilevered laminate specimens was carefully studied. Moreover, a method based on the frequency response function was proposed to monitor the fatigue damage accumulation of specimens. On the basis of that, the influence factors that affect the vibration fatigue life of CFRP were experimentally studied. The influence of amplitude probability distribution of the vibration load spectrum on the fatigue life was deeply explored. Compared with Gaussian random vibration, the non-Gaussian random load has a significant impact on the vibration fatigue life of CFRP. The experimental results also showed that the magnitude of power spectral density (PSD) has a significant effect on the vibration fatigue life of specimens. For Gaussian vibration load, the frequency bandwidth almost has no effects on the vibration fatigue life of CFRP. However, for non-Gaussian vibration load, it has a great impact on the fatigue life. When PSD magnitude and frequency bandwidth are constant, the root mean square (RMS) is proportional to the vibration fatigue life of composites.

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Section: Online Monitoring Of Fatigue Damagementioning

confidence: 99%

Experimental Research on Vibration Fatigue of CFRP and Its Influence Factors Based on Vibration Testing

Fan

Jiang

Zhang

et al. 2017

Shock and Vibration

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“…It is possible to excite randomly, harmoniously or by an impulse. The results of one type of excitation may be used for predicting response of the structure at a different type [11,12]. According to [13,14] the excitation and the response signals are digitalized and processed by an analyzer of signals.…”

Section: Methodsmentioning

confidence: 99%

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Kulhavý¹,

Lepšík²

2017

Vib. proced.

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Abstract. Constructions based on long fiber composite frames gaining significant and irreplaceable position through almost all traffic sectors. The aim of this presented work is a study of composite rods made by two ways from pre impregnated fibres. In technical practice, one can find applications of so called "prepregs", especially for so-called wrapping, which is a gradual helical layering of wide tapes. This is a quite simply method with a good quality of final parts, but the using is limited only for straight shapes. Therefore, a method called winding, which is a simultaneous deposition of larger number of fiber filaments was used to handle the problem for curved shapes and fluently changed cross-sections. Even though this method could expand the using of presaturated fibres, in a real case compared with wrapped parts there is evident imperfect alignment and mutually storing of placed fibers. This could be mainly caused by a significant tortuosity and stickiness of the individual fiber strands. The objective the carried work was to experimentally compare the vibrational -modal behavior of two almost identical rods. One was winded and the second kind was wrapped with the same structure of layers, weight and curing parameters. The results of the two compared tubes, that should be theoretically identical, were significantly different. Another step was compilation of a numerical model and verify its suitability for parts created with the two mentioned production methods. The numerical model was in a good agreement with the empirical obtained from the experiment with wrapped parts. However, the using of this standard model also for winded tube is questionable, because of the significantly differences in founded natural frequencies.

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“…Modal frequency shifts have been extensively used in the literature as a damage indicator for composites ; Zou et al (2000); Della and Shu (2007);Frieden et al (2011). It is generally known that delamination decreases stiffness and, in turn, decreases modal frequencies.…”

Section: Frequency Shiftsmentioning

confidence: 99%

Comparative experimental analysis of the effect caused by artificial and real induced damage in composite laminates

Pérez

Gil

Sánchez

et al. 2014

Composite Structures

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This paper presents the results of an extensive experimental campaign aimed to examine the effect upon the vibration response and on the residual load-bearing capacity caused by both: isolated artificially induced interlaminar damage and low-velocity impact induced damage in composite laminates. The experimental programme included modal testing, drop-weight impact testing, ultrasonic inspection, transverse quasi-static loading testing and compression testing conducted on a set of 72 carbon fibre-reinforced composite laminated coupons. Both types of damage caused measurable changes in laminate performance, however marked divergent trends were observed. The results allowed for conclusions to be drawn regarding the adequacy of the artificial damage approach and highlighted the importance and role of other forms of degradation upon damage tolerance of laminated composites containing damage.

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Vibration-Based Model-Dependent Damage (Delamination) Identification and Health Monitoring for Composite Structures — A Review

Cited by 659 publications

References 53 publications

Experimental Research on Vibration Fatigue of CFRP and Its Influence Factors Based on Vibration Testing

Experimental Research on Vibration Fatigue of CFRP and Its Influence Factors Based on Vibration Testing

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Comparative experimental analysis of the effect caused by artificial and real induced damage in composite laminates

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