Influence of Glass Content on Damping Properties of Plasma-Sprayed Mixtures of Zirconia and Glass

Torvik, Peter J.; Henderson, John P.

doi:10.1007/s11665-011-0011-4

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…Up to this point, the bulk of the research into nonlinear coatings relies on linear damping estimation methods, such as the half power bandwidth method or modal energy methods [2,7,10,12,[19][20][21][25][26][27][28][29]. The damping identification method is typically applied to a sine sweep test on a cantilever beam through resonance.…”

Section: Research Requirementsmentioning

confidence: 99%

Identification of Nonlinear Constitutive Properties of Damping Coatings

Slater

Tidball

2018

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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Scheduled and unscheduled maintenance actions are a significant cost for gas turbines.Advanced life prediction capabilities help to mitigate these costs. However, the protective thermal and damping coatings applied to the turbine rotors which can help significantly extend component life simultaneously increase the difficulty of modeling the behavior of the components due to the nonlinearity they introduce. This research addresses modeling and analysis of nonlinear coatings for turbine blades and blisks using a nonlinear constitutive law model for the coating. The theoretical frequency response of the nonlinear system is solved for using the harmonic balance method.The coefficients of the nonlinear constitutive law are then identified by correlating the theoretical nonlinear system responses to experimental data in a minimization function. This approach more accurately identifies the nonlinear coefficients of the system by fitting the model to the full frequency response of the system at resonance as opposed to using just a few points such as with half-power peak picking. The identified nonlinear coating model can later be used in finite element analysis to both optimize the coating within the operating conditions of the turbine and improve life prediction capabilities of the system.

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Section: Research Requirementsmentioning

confidence: 99%

Identification of Nonlinear Constitutive Properties of Damping Coatings

Slater

Tidball

2018

2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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“…The hard coating was found to effectively consume external energy due to the friction effect of the particles inside the coating, reducing the structural vibration after coating and offering a good suppression effect for the fatigue caused by vibration [16][17][18]. The use of hard coatings for vibration damping has become a new research direction [19][20][21][22][23][24], and therefore research has been conducted on the damping of aero-engine hydraulic clamppiping systems based on hard coatings. Aerohydraulic clamp-piping systems are generally affected by the vibration of the dual-rotor system of aero-engines and the vibration of the casing, resulting in local vibration and random vibration.…”

Section: Introductionmentioning

confidence: 99%

Research on the Vibration Characteristics of Aviation Hydraulic Clamp and Pipeline Based on Hard Coating

Cui

Liu

et al. 2022

Coatings

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Aviation hydraulic clamp-piping systems often experience damage due to vibration, which poses a great threat to the reliability and safety of the aircraft. In this paper, a hard coating is used as a new damping method to study the vibration characteristics of aviation hydraulic clamp-piping systems. Three kinds of coated clamp entities are obtained by optimization and preparation, and the combination of finite element simulation and experiment is used to analyze the vibration response of the high- and low-pressure rotor under fixed-frequency simple harmonic excitation, and the resonance response under sweep-frequency excitation of the aviation hydraulic clamp-piping system. Through orthogonal experiments, it is clear that 304 stainless steel clamps coated with 200-μm-thick YSZ-PTFE coating have the best vibration damping effect on the clamp-piping system; that is, the damping rate can reach 24.67% under fixed-frequency excitation, and swept frequency damping can reach 19.93%. The maximum error between the simulation and the experimental vibration response amplitude is 7.9%, which proves the correctness of the model and verifies that the YSZ-PTFE hard coating can significantly improve the vibration damping effect with very good application prospects.

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Vibration analysis of hard-coated composite beam considering the strain dependent characteristic of coating material

Sun

Liu

2016

Acta Mech. Sin.

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Influence of Glass Content on Damping Properties of Plasma-Sprayed Mixtures of Zirconia and Glass

Cited by 6 publications

References 6 publications

Identification of Nonlinear Constitutive Properties of Damping Coatings

Identification of Nonlinear Constitutive Properties of Damping Coatings

Research on the Vibration Characteristics of Aviation Hydraulic Clamp and Pipeline Based on Hard Coating

Vibration analysis of hard-coated composite beam considering the strain dependent characteristic of coating material

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