Introduction To Composite Materials

Vinson, Jack R.; Sierakowski, Robert L.

doi:10.1007/978-94-009-5187-7_1

Cited by 87 publications

(58 citation statements)

References 2 publications

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“…The sti!ness coe$cient matrix is symmetric. Their expressions in terms of engineering constants are given by Vinson and Sierakowski [26]. Invoking equations (7)}(9), equation (6) may be rewritten as…”

Section: Dispersion Of Waves In Immersed Laminated Hollow Cylindersmentioning

confidence: 99%

Dispersion of Waves in Immersed Laminated Composite Hollow Cylinders

Liu

Lam

et al. 2002

Journal of Sound and Vibration

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Section: Dispersion Of Waves In Immersed Laminated Hollow Cylindersmentioning

confidence: 99%

Dispersion of Waves in Immersed Laminated Composite Hollow Cylinders

Liu

Lam

et al. 2002

Journal of Sound and Vibration

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“…The element size for the CFRC and epoxy-adhesive layers are assigned as (0.05 cm × 0.05 cm × 0.025 cm) and (0.05 cm × 0.05 cm × 0.01 cm), respectively. The homogenised elastic properties of the CFRC laminate and the adhesive layer are calculated as per the Vinson and Sierakowski (1993) in [29]. The temperature-dependent material properties are then obtained as per Chamis (1984) in [30].…”

Section: Finite Element Analysismentioning

confidence: 99%

Nondestructive Analysis of Debonds in a Composite Structure under Variable Temperature Conditions

Sikdar

Kundu

Jurek

et al. 2019

Sensors

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This paper presents a nondestructive analysis of debonds in an adhesively-bonded carbon-fibre reinforced composite structure under variable temperature conditions. Towards this, ultrasonic guided wave propagation based experimental analysis and numerical simulations are carried out for a sample composite structure to investigate the wave propagation characteristics and detect debonds under variable operating temperature conditions. The analysis revealed that the presence of debonds in the structure significantly reduces the wave mode amplitudes, and this effect further increases with the increase in ambient temperature and debond size. Based on the debond induced differential amplitude phenomenon, an online monitoring strategy is proposed that directly uses the guided wave signals from the distributed piezoelectric sensor network to localize the hidden debonds in the structure. Debond index maps generated from the proposed monitoring strategy show the debond identification potential in the adhesively-bonded composite structure. The accuracy of the monitoring strategy is successfully verified with non-contact active infrared-thermography analysis results. The effectiveness of the proposed monitoring strategy is further investigated for the variable debond size and ambient temperature conditions. The study establishes the potential for using the proposed damage index constructed from the differential guided wave signal features as a basis for localization and characterization of debond damages in operational composite structures.

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“…is the matrix of the o!-principal-axis sti!ness coe$cients of the lamina whose expressions in terms of engineering constants are given by Vinson and Sierakowski [13].…”

Section: Basic Equationsmentioning

confidence: 99%