Damping efficiency of the coating structure

Yu, Liming; Ma, Yue; Zhou, Chungen; Xu, Huibi

doi:10.1016/j.ijsolstr.2004.10.033

Cited by 66 publications

(45 citation statements)

References 23 publications

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“…This kind of interface slippage mechanism can enhance vibrational friction energy loss due to having larger boundary contact area and many interfaces in the columnar structures [71]. However, the boundary damping between the coating and substrate, observed by Yu et al [72], is not observed in this work. One reason could be that the force level exerted on the specimen by the shaker is small and such nonlinear damping mechanism is not excited.…”

Section: Mechanical Damping Lossfactor Resultsmentioning

confidence: 58%

Manufacturing and Characterization of a Carbon-Based Amorphous (a-CNX) Coating Material

Rashid

Archenti

2018

Nanomanuf Metrol

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A thick 400-micron amorphous carbon nitride (a-CN X ) coating material was synthesized by means of plasma-enhanced chemical vapor deposition process. High-power impulse magnetron sputtering technique was used to sputter a pure graphite target plate in reactive argon (Ar), nitrogen (N 2 ) and acetylene (C 2 H 2 ) environment for depositing the composite coating. Structural and chemical/elemental composition of the a-CN X composite material was investigated by field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy and micro-Raman spectroscopy. The rootmean-square surface roughness (S q ) and structure were estimated by atomic force microscopy. Mechanical properties such as hardness and Young's modulus (Oliver-Pharr method) at room temperature were characterized by Vickers microindentation test. Operational temperature test of the deposited a-CN X coating reveals that it can withstand up to 400°C without cracking. An inverted shaker test, based on central impedance method, was adopted to investigate the dynamic damping property of the coating material, and it was found that the first bending mode damping lossfactor of the reported a-CN X coating is 0.015 ± 0.001 and corresponding loss modulus (Young's modulus multiplied by lossfactor) is 0.234 ± 0.011 GPa.

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Section: Mechanical Damping Lossfactor Resultsmentioning

confidence: 58%

Manufacturing and Characterization of a Carbon-Based Amorphous (a-CNX) Coating Material

Rashid

Archenti

2018

Nanomanuf Metrol

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“…It is shown that the damping behaviour exhibits little change with respect to the one obtained from the uncoated specimen (Example 5.1), making this specific solution not effective. As a matter of fact, the constrained layer damping (CLD) contribution [1,9], exhibited when the material shear modulus of two close layer coatings is highly different, is low in this example case. To increase the CLD contribution, in Example 5.1.2 a different, stiffer material was adopted in layers k = 2, 4, letting all of the remaining parameters unchanged with respect to previous Example 5.1.1.…”

Section: Discussionmentioning

confidence: 92%

“…In all of these works, it was found that the deposition of thin coatings can improve the damping behaviour of the composite system. Moreover, it was experimentally found in [6][7][8][9][10] that the dissipative actions in multi-layer architectures can be assumed as localized at the interfaces of the layers. Kinematical parameters are the axial ũ and transversal beam w  displacement components, kx,z is the stiffness of the longitudinal and transversal distributed elastic constraints, cx,z is the viscosity of the longitudinal and transversal distributed viscous constraints, q and Fw are the distributed and concentrated external transversal loads, ρk, Ek, and Gk are the material, k-th layer, mass density, axial and shear moduli, and t is the time coordinate.…”

Section: Introductionmentioning

confidence: 99%

Damping Oriented Design of Thin-Walled Mechanical Components by Means of Multi-Layer Coating Technology

Catania

Strozzi

2018

Coatings

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Abstract:The damping behaviour of multi-layer composite mechanical components, shown by recent research and application papers, is analyzed. A local dissipation mechanism, acting at the interface between any two different layers of the composite component, is taken into account, and a beam model, to be used for validating the known experimental results, is proposed. Multi-layer prismatic beams, consisting of a metal substrate and of some thin coated layers exhibiting variable stiffness and adherence properties, are considered in order to make it possible to study and validate this assumption. A dynamical model, based on a simple beam geometry but taking into account the previously introduced local dissipation mechanism and distributed visco-elastic constraints, is proposed. Some different application examples of specific multi-layer beams are considered, and some numerical examples concerning the beam free and forced response are described. The influence of the multilayer system parameters on the damping behaviour of the free and forced response of the composite beam is investigated by means of the definition of some damping estimators. Some effective multi-coating configurations, giving a relevant increase of the damping estimators of the coated structure with respect to the same uncoated structure, are obtained from the model simulation, and the results are critically discussed.

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“…For example, the application of Ni and Cu coatings on stainless steel 10Cr18Ni9Ti considerably increases damping compared to electrolytic, gas-flame and other coatings. The damping properties of stainless steel 10Cr18Ni9 with plasma coatings based on NiCrAlY, Al 2 O 3 and FeCr as well as nanopowder ZrO 2 are described in studies [15,20]. The research reveals that relaxation effects along the grain boundaries affect the change in the damping properties of the system as well as the ability of a nanostructure to enhance the mechanical properties of composite materials.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

A study of internal friction anomalies in stainless steel with nanostructured plasma coating

Копылов

2017

EEJET

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Damping efficiency of the coating structure

Cited by 66 publications

References 23 publications

Manufacturing and Characterization of a Carbon-Based Amorphous (a-CNX) Coating Material

Manufacturing and Characterization of a Carbon-Based Amorphous (a-CNX) Coating Material

Damping Oriented Design of Thin-Walled Mechanical Components by Means of Multi-Layer Coating Technology

A study of internal friction anomalies in stainless steel with nanostructured plasma coating

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