The relationship between wear and dissipated energy in sliding systems

Ramalho, A.; Miranda, J.C.

doi:10.1016/j.wear.2005.02.121

Cited by 207 publications

(122 citation statements)

References 13 publications

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“…Huq and Celis [42] conclude that the more complexity in wear process arises when one considers the interactions not only between the contacting surfaces but also with the surroundings. A similar study on the energetic approach to wear is reported by Ramalho and Miranda [43]. Interestingly, they show that the energy dissipated in the contact is linearly correlated with the wear volume during sliding wear and that the results can be used to quantify the wear coefficient in Archard's equation.…”

Section: Sliding Contactsupporting

confidence: 69%

“…Therefore, the volume of wear is directly proportional to the energy dissipated by friction. Figure 5 shows several experimental results reported by Ramalho and Miranda [43] for wear volume versus dissipated energy for different materials. Indeed, experimental results of Ramalho and Miranda [43] reveal that the rate of change in the wear volume is linearly related to the dissipated energy and that the slope of the line represents an estimation of the wear coefficient,…”

Section: Sliding Contactmentioning

confidence: 99%

See 1 more Smart Citation

On the Thermodynamics of Friction and Wear―A Review

Amiri

Khonsari

2010

Entropy

166

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Section: Sliding Contactsupporting

confidence: 69%

Section: Sliding Contactmentioning

confidence: 99%

On the Thermodynamics of Friction and Wear―A Review

Amiri

Khonsari

2010

Entropy

166

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“…Once the normal and tangential contact conditions have been calculated with the semi-analytical solver, the wear energy approach [2,[22][23][24] is used to compute fretting wear. In this approach, the total wear volume obtained after N cycles is assumed to be proportional to the accumulated dissipated energy:…”

Section: Wear Computationmentioning

confidence: 99%

A Multiscale Approach for Nonlinear Dynamic Response Predictions With Fretting Wear

Armand

Pesaresi

Salles

et al. 2016

Journal of Engineering for Gas Turbines and Power

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Accurate prediction of the vibration response of aircraft engine assemblies is of great importance when estimating both the performance and the lifetime of their individual components. In the case of underplatform dampers, for example, the motion at the frictional interfaces can lead to a highly nonlinear dynamic response and cause fretting wear at the contact. The latter will change the contact conditions of the interface and consequently impact the nonlinear dynamic response of the entire assembly. Accurate prediction of the nonlinear dynamic response over the lifetime of the assembly must include the impact of fretting wear. A multi-scale approach that incorporates wear into the nonlinear dynamic analysis is proposed, and its viability is demonstrated for an underplatform damper system. The nonlinear dynamic response is calculated with a multiharmonic balance approach, and a newly developed semi-analytical contact solver is used to obtain the contact conditions at the blade-damper interface with high accuracy and low computational cost. The calculated contact conditions are used in combination with the energy wear approach to compute the fretting wear at the contact interface. The nonlinear dynamic model of the blade-damper system is then updated with the worn profile and its dynamic response is recomputed. A significant impact of fretting wear on the nonlinear dynamic behaviour of the blade-damper system was observed, highlighting the sensitivity of the nonlinear dynamic response to changes at the contact interface. The computational speed and robustness of the adopted multi-scale approach are demonstrated.

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“…This would demonstrate a dependence of friction dissipation in sliding solids through three processes: rise in temperature; wear particle generation; and the entropy changes associated with material transformation in the interface. 7,25 In this work, we determine a correlation between damage entropy and the resistor's resistance evolution, which may help for resistor damage diagnosis and prognosis. The form of _ S i will be discussed later in light of the experimental results.…”

Section: Theoretical Approachmentioning

confidence: 99%

Irreversible entropy model for damage diagnosis in resistors

Cuadras

Crisóstomo

Ovejas

et al. 2015

Journal of Applied Physics

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Entropy and irreversibility in the quantum realm Am. J. Phys. 79, 297 (2011) We propose a method to characterize electrical resistor damage based on entropy measurements. Irreversible entropy and the rate at which it is generated are more convenient parameters than resistance for describing damage because they are essentially positive in virtue of the second law of thermodynamics, whereas resistance may increase or decrease depending on the degradation mechanism. Commercial resistors were tested in order to characterize the damage induced by power surges. Resistors were biased with constant and pulsed voltage signals, leading to power dissipation in the range of 4-8 W, which is well above the 0.25 W nominal power to initiate failure. Entropy was inferred from the added power and temperature evolution. A model is proposed to understand the relationship among resistance, entropy, and damage. The power surge dissipates into heat (Joule effect) and damages the resistor. The results show a correlation between entropy generation rate and resistor failure. We conclude that damage can be conveniently assessed from irreversible entropy generation. Our results for resistors can be easily extrapolated to other systems or machines that can be modeled based on their resistance. V C 2015 AIP Publishing LLC.

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The relationship between wear and dissipated energy in sliding systems

Cited by 207 publications

References 13 publications

On the Thermodynamics of Friction and Wear―A Review

On the Thermodynamics of Friction and Wear―A Review

A Multiscale Approach for Nonlinear Dynamic Response Predictions With Fretting Wear

Irreversible entropy model for damage diagnosis in resistors

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