Plasma deposition of constrained layer damping coatings

Rongong, J.A.; Goruppa, A.; Buravalla, Vidyashankar; Tomlinson, G.R.; Jones, Frank R.

doi:10.1243/0954406041319581

Cited by 16 publications

(15 citation statements)

References 25 publications

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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 this specific field, recent applications were explored, mainly based on experimental approaches. The influence of thin ceramic, polymeric, and metallic coatings, in some cases reinforced by carbon nanotubes, deposed on thin-walled components, on the damping behaviour of the obtained multi-layer composite systems was experimentally studied by some researchers [1][2][3][4][5]. In all of these works, it was found that the deposition of thin coatings can improve the damping behaviour of the composite system.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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

Catania

Strozzi

2018

Coatings

View full text Add to dashboard Cite

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“…This has been proved to be very instructive for the author to understand the coated damping structure for metal rubber of bellows. In the coated damping structure for metal rubber of bellows, the bellows is equivalent to the host structure, the metal rubber is equivalent to the viscoelastic damping layer, and the wire rope clamp is equivalent to the constraining layer [15]. Paimushin et al proposed a method for identifying the elastic and damping properties of soft and hard materials containing rigid (substrate) materials, and using a quadratic function containing experimental and calculated internal damping parameters.…”

Section: Modellingmentioning

confidence: 99%

Energy Dissipation Characteristics and Dynamic Modeling of the Coated Damping Structure for Metal Rubber of Bellows

Bai

Xue

et al. 2018

Metals

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A novel coated damping structure for metal rubber (MR) of bellows is designed based on large-size metal rubber sheets. This structure is dynamically tested in the bending direction at normal temperature. According to the test results, a model of the nonlinear elastic restoring force is set up, which describes the dynamic characteristics of the coated damping structure for metal rubber of bellows, and identifies the parameters of the model. The results show that the coated damping structure for metal rubber of bellows has a strong damping energy dissipation ability, its dynamic vibration characteristics are related to the vibration amplitude and frequency, and it is a complex nonlinear hysteretic system with multiple damping components. After identification of the parameters, the model of nonlinear elastic restoring force shows highly accurate results.

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“…Homogenous materials may not satisfy the increasing requirements of advanced materials. Laminated composites, consisting of two or more metals, have been developed because of their improved impact behavior, corrosion, wear, bending behavior, fracture toughness and damping capacity [ 1 , 2 ]. A number of ways to fabricate laminated composites have been developed, such as cold rolling, hot rolling, explosive welding, and diffusion bonding.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Anisotropy on the Microstructure and Mechanical Properties of Ti/Al Laminated Composites

et al. 2020

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Anisotropy is the difference in the microstructure or mechanical properties of materials in different directions. Anisotropic behavior occurs in rolled sheets, and this anisotropy is very obvious in laminated composites. In this work, the influence of anisotropy on the microstructure and mechanical properties of Ti/Al laminated composites fabricated by rolling was investigated. The results show that the microstructure and mechanical properties of the Ti/Al laminated composites were obviously anisotropic. The grains in the Al layer of the composites were elongated along the rolling direction and were compressed perpendicular to the rolling direction. The grains in the Ti layer of the composites had no obvious preferential orientation and comprised mainly twins. With the rolling direction as 0°, the mechanical properties of the Ti/Al laminated composites varied greatly as the angle of the composites increased. The tensile strength, elongation and bond strength of the Ti/Al laminated composites decreased with increasing angle of the composites. In addition, the microhardness of the Ti/Al laminated composites increased with increasing angle of the composites.

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Plasma deposition of constrained layer damping coatings

Cited by 16 publications

References 25 publications

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

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

Energy Dissipation Characteristics and Dynamic Modeling of the Coated Damping Structure for Metal Rubber of Bellows

Influence of the Anisotropy on the Microstructure and Mechanical Properties of Ti/Al Laminated Composites

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