Experimental Evaluation and Modeling of the Damping Properties of Multi-Layer Coated Composites

Amadori, Stefano; Catania, Giuseppe; Casagrande, A.

doi:10.3390/coatings8020053

Cited by 8 publications

(6 citation statements)

References 43 publications

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“…By substituting the properties of the measured test specimen given in Table 1 into the Eqs. (9)(10)(11) the first, second, and third natural frequencies become 39.73 Hz, 249 Hz, and 702.79 Hz. By comparing with the experimental values of the cantilever beam it is concluded that analytical values are quite close to the experimental values.…”

Section: Results and Analysismentioning

confidence: 98%

“…Enhancement in vibration damping is observed in both cases but hard coating material (alumina) showed more improvement in damping. Amadori et al [11] compared the damping properties of hard coating made by an anodizing process and by a reactive plasma vapor deposition process. Hard-coated specimens showed improvement in damping compared to un-coated specimens.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental investigation of bi-modular material coating to enhance damping

Shehzad¹,

Nutakor²,

Sopanen³

et al. 2022

J. vibroeng.

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Hard coatings can be used to increase damping when applied on the surface of the components of turbomachinery. This can be effective to reduce the resonant vibration level of components working in a high cycle fatigue environment due to the extremely high operational speed. This paper discusses the experimental investigation of a bi-modular material hard coating to enhance damping in structural steel elements. Firstly, a hard coating (Al2O3+MgO) is applied on AISI 304L stainless steel substrate by plasma spraying. After that, a layer of chrome is deposited by chrome plating. Dynamic responses of both coated and uncoated samples are measured. The damping ratio of the test specimen is extracted from the time response by the logarithmic decrement method. Improved damping capacity of the coated steel sample is observed and is mainly attributed to the thin coating of chrome on the steel structure. The natural frequency of coated specimen showed 8 to 10 % improvement, the forced response showed a 30 to 35 % decrement in displacement, the damping ratio showed a 200 % increment, and the time of decaying showed a 20 % decrement. The results of the present study provide new ideas for the development of high-damping structural elements.

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Section: Results and Analysismentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Experimental investigation of bi-modular material coating to enhance damping

Shehzad¹,

Nutakor²,

Sopanen³

et al. 2022

J. vibroeng.

View full text Add to dashboard Cite

show abstract

“…Shape memory alloy actuators are known to have a simple operating mechanism, be quiet, excellent repeatability with little hysteresis, and small aging effect. On the other hand, since the actuator operates on thermal energy, the energy efficiency is low, bandwidth is limiting, and response time is rather slow (Amadori et al, 2018; Kim, 2012; Urreta et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Development of variable preload system for machine tool spindle using giant magnetostrictive material Terfenol-D actuator

Kim

Lee

2020

Journal of Intelligent Material Systems and Structures

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Applying a bearing preload of machine tool spindle produces positive effects, including increased stiffness, rotation noise reduction, increase in shaft precision, position adjustment during operation, and prevention of rolling element resonance and rotating slip, along with a significant extension of the bearing lifespan. A variable preload technique is a method that improves the bearing performance by appropriately varying the preload applied to the bearing according to the spindle rotation speed and machining condition. In this study, a novel variable preload method utilizing a Terfenol-D actuator has greater power and more displacement and force than those of other transducer materials such as piezo elements or nickel alloys. Terfenol-D has greater power and more displacement and more force. A prototype of a spindle for the variable preload system using Terfenol-D was fabricated, and the axial force and displacement of the bearing were measured during a running experiment. In order to assess whether the proposed variable preload device can effectively apply preloading to the bearing, a comparative analysis was conducted between the theoretical and empirically obtained values of the bearing axial direction displacement. Through the comparative analysis, the real applicability of the proposed structure was confirmed.

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“…Coatings can be employed to increase the global dissipative properties of a mechanical component with limited influence on the other mechanical properties. Mechanical components with high stiffness, thermal resistance and vibration damping specifications are in great demand for most mechanical engineering applications [4] The coated component dissipative properties can be significantly tailored by means of the application of coating layers with high internal hysteresis or with high frictional actions at the interface between the different layers.…”

Section: Introductionmentioning

confidence: 99%

Advanced multi-functional coatings for vibration control of machining

Rashid¹,

Guo²,

Adane³

et al. 2020

Journal of Machine Engineering

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The paper present theoretical and experimental studies of the energy dissipation performance of a composite structure composed in a multilayer nano-composite damping coating applied on a tungsten carbide shim and placed beneath the cutting insert. The coated shim placed closed to the cutting zone is subjected to high compressive and shear stresses as well as high temperature. Therefore, apart from high damping capacity it requires high stiffness and high thermal resistance. The coated shim dissipates the high frequency oscillations produced at the tool-chip and tool-workpiece interfaces during the chip forming process. The use of coated shims demonstrates that the tool life is considerably extended, while the machined surface integrity is improved. The Reuss model of the composite structure composed of a phase with a stiff, low loss factor and a phase with high loss factor is used to calculate the optimal coating thickness that gives high loss factor combined with high stiffness. The synthesis process of the coating material using HiPIMS process is discussed. The physical characteristics of the coating and the machining performance are presented in the experimental section.

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Experimental Evaluation and Modeling of the Damping Properties of Multi-Layer Coated Composites

Cited by 8 publications

References 43 publications

Experimental investigation of bi-modular material coating to enhance damping

Experimental investigation of bi-modular material coating to enhance damping

Development of variable preload system for machine tool spindle using giant magnetostrictive material Terfenol-D actuator

Advanced multi-functional coatings for vibration control of machining

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