Phenomenological investigation on crash characteristics of thin layered CFRP-steel laminates

Boose, Yannick; Kappel, Erik; Stefaniak, Daniel; Prussak, Robert; Pototzky, Alexander; Weiß, Lennart

doi:10.1080/13588265.2020.1787681

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…Moreover, advantages can be taken from the combination of the two materials, e.g. in case of impact loading [34] or load-bearing applications [35,36], as well as for function integration [37] and structure robustness [38]. Despite these advantages, low-velocity impact damage can lead to internal failure of the laminate, e.g.…”

Section: Fmlsmentioning

confidence: 99%

Experimental determination of dispersion diagrams over large frequency ranges for guided ultrasonic waves in fiber metal laminates

Barth

Wiedemann

Roloff

et al. 2023

Smart Mater. Struct.

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Fiber metal laminates (FML) are of high interest for lightweight structures as they combine the advantageous material properties of metals and fiber-reinforced polymers. However, low-velocity impacts can lead to complex internal damage. Therefore, structural health monitoring with guided ultrasonic waves (GUW) is a methodology to identify such damage.Numerical simulations form the basis for corresponding investigations, but experimental validation of dispersion diagrams over a wide frequency range is hardly found in the literature. In this work the dispersive relation of GUWs is experimentally determined for an FML made of carbon fiber-reinforced polymer and steel. For this purpose, multi-frequency excitation signals are used to generate GUWs and the resulting wave field is measured via laser scanning vibrometry. The data are processed by means of a non-uniform discrete 2d Fourier transform and analyzed in the frequency-wavenumber domain. The experimental data are in excellent agreement with data from a numerical solution of the analytical framework. In conclusion, this work presents a highly automatable method to experimentally determine dispersion diagrams of GUWs in FML over large frequency ranges with high accuracy.

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Section: Fmlsmentioning

confidence: 99%

Experimental determination of dispersion diagrams over large frequency ranges for guided ultrasonic waves in fiber metal laminates

Barth

Wiedemann

Roloff

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Moreover, advantages can be taken of the combination of the two materials e.g. for crash [27] or load-bearing applications [28,29], as well as for function integration [30] and structure robustness [31]. Despite these advantages, low-velocity impact damages can lead to internal failure of the laminate, e.g.…”

Section: Fiber Metal Laminatesmentioning

confidence: 99%

Experimental determination of Lamb wave dispersion diagrams over large frequency ranges in fiber metal laminates

Barth¹,

Wiedemann²,

Roloff³

et al. 2022

Preprint

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Fiber metal laminates (FML) are of high interest for lightweight structures as they combine the advantageous material properties of metals and fiber-reinforced polymers. However, lowvelocity impacts can lead to complex internal damage. Therefore, structural health monitoring (SHM) with guided ultrasonic waves, in this case, referred to as Lamb waves, is an approach to identify such damage. Numerical simulations form the basis for corresponding investigations, but experimental validation of propagation diagrams over a wide frequency range is hardly found in the literature. In this work the dispersive relation of Lamb waves is experimentally determined for an FML made of carbon fiber-reinforced polymer and steel. For this purpose, a multi-frequency excitation is used to generate Lamb waves and the resulting wave field is measured via laser scanning vibrometry. The data are processed by means of a non-uniform discrete 2d Fourier transform and analyzed in the frequency-wavenumber domain. The experimental data are in good agreement with data from a numerical solution of the analytical framework. In conclusion, this work presents a highly automatable method to experimentally determine dispersion diagrams of Lamb waves in FML over large frequency ranges with high accuracy and reproducibility.

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“…Moreover, their limitations in high temperatures may render magnesium alloys unsuitable for high-performance impact applications, despite their outstanding properties in compression [15]. Stainless steel alloys have been incorporated into FMLs and their absolute energy absorption values and impact behaviors characterized by drop weight tests [16,17]. Although stainless steel alloys exhibit stiffness levels comparable to titanium alloys, their density is higher than that of titanium (Ti) alloys.…”

Section: Introductionmentioning

confidence: 99%

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2024

RDMS

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FMLs structures have been manufactured using various metal constituents namely aluminium, magnesium, titanium, and stainless steel [5][6][7][8]. Aramid Fiber Reinforced Aluminium Laminates (ARALL), Carbon Fiber Reinforced Aluminium Laminates (CARALL), and Glass Fiber Reinforced Aluminium Laminates (GLARE) are well-known aluminium based FMLs composites. Hoo et al. [9] investigated the ballistic limit and energy absorption of GLARE panels which consist of 2024-T3 aluminium alloy sheets and S2-glass/epoxy laminates subjected to impact by blunt titanium cylinders. They have found that the ballistic limit of GLARE was higher than bare 2024-T3 aluminium alloy. The high velocity impact behavior of aluminium 2024-T3 alloy, Glass Fiber Reinforced Polypropylene (GFPP) and aluminium foam hybrid structure was studied by Villanueva and Cantwell [10]. The impact testing of unidirectional Fiber Metal Laminate (FML)-reinforced aluminum foam sandwich structures

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Phenomenological investigation on crash characteristics of thin layered CFRP-steel laminates

Cited by 12 publications

References 12 publications

Experimental determination of dispersion diagrams over large frequency ranges for guided ultrasonic waves in fiber metal laminates

Experimental determination of dispersion diagrams over large frequency ranges for guided ultrasonic waves in fiber metal laminates

Experimental determination of Lamb wave dispersion diagrams over large frequency ranges in fiber metal laminates

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