Determination of the wear of machine parts by charged particle surface activation

Константинов, И. О.; Krasnov, N. N.

doi:10.1007/bf02518201

Cited by 39 publications

(5 citation statements)

References 16 publications

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“…This enables the development of a more precise wear model and also to better predict the lifetime of a given system. Some studies [1,[6][7][8][9][10] have already highlighted the importance of measuring the wear rate continuously and in situ during the process. However, in most studies, the tribo-system is simplified to allow in situ measurements [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, it is difficult to transpose these results to real industrial cases. Another method, the radionuclide technique allows measuring very accurately the wear rate and can be adapted to system with very low wear rate [9,10]. However, this method still requires heavy equipment and big investment to detect the radiation emitted from the wear debris of activated material, even though recent progress of this technique has reduced the need for heavy shielding [9].…”

Section: Introductionmentioning

confidence: 99%

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A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Meylan

Dogan

Sage

et al. 2016

Wear

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a b s t r a c tThis contribution presents a simple, fast, and low-cost method to track in situ and in real time the evolution of the surface topography. The method combines an optical method (collimated light) with image analysis. The method was validated using a complex tribo-system; a reciprocal sliding of a rough cast iron counter-piece under mixed lubrication.We demonstrated that the optical method is well suited to observe the evolution of the contact areas during sliding. We also proved that the contact area occurs on the highest peaks of the surface roughness. Finally, we estimated the wear rate by combining the information of the contact area and the Abbott-Firestone curve obtained by profilometry. The wear rate was found to be 40 times higher in the early stage of sliding as compared to the steady-state. The running-in of this particular system was found to be approximately 10 h.In addition to be simple, fast and low-cost, the proposed method has other advantages. It is adaptable for real industrial tests conditions. The fast data analysis allows the wear rate of a tribo-system being determined in real-time. This method characterise the real contact areas of the observed piece, which is difficult, if not impossible, to obtain by profilometric observation alone.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Meylan

Dogan

Sage

et al. 2016

Wear

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“…In practice, the actual material may not be 100% pure and α-irradiation may not be always possible at 90° angle of incidence. As such, transformations [15] may be required to be carried out on the X-axis of the calibration curves. Thus the material composition and the angle of incidence of the projectile to the surface of sample should be taken into consideration.…”

Section: Calibration Curves and Surface Wear Computationmentioning

confidence: 99%

Surface Wear Studies in Some Materials Using α-induced Reactions

Singh

Sharma

Yadav

et al. 2013

JNP

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The radio-activity produced during the irradiation of 63,65 Cu, 59 Co, 93 Nb and 121,123 Sb targets with α-particles have been measured using activation technique. The yields of radioactive isotopic products 66,67,68 Ga, 61 Cu, 96g,m Tc and 123,124,126 I have been determined in the energy range ≈ 10-40 MeV using stacked foil technique. Radioactive counting of samples was performed with a high-resolution gamma-spectrometer. As light ion beams produce an extremely narrow layer of activities in the surface of a material, these reactions may be useful for thin layer activation study.

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“…This method measures the radiation concentration in the debris produce by the wear of activated materials. RNT is very accurate and can be adapted to low wear rate process [6,7]. However, this method does not provide any information on the topography of the surface and does not provide the exact location of the wear and cannot be used in vacuum applications.…”

Section: Introductionmentioning

confidence: 99%

A new ball-on-disk vacuum tribometer with in situ measurement of the wear track by digital holographic microscopy

Meylan

Ciani

Zhang

et al. 2017

Surf. Topogr.: Metrol. Prop.

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This contribution presents a new ball-on-disk vacuum tribometer with in situ measurement of the wear track by digital holographic microscopy. This new tribometer allows observation of the evolution of the wear track in situ and in real-time. The method combines a high vacuum high temperature ball-on-disk tribometer with a digital holographic microscope (DHM). The machine was tested and validated by taking DHM images during wear tests at room temperature and in vacuum at 2 • 10 −6 of polished 100Cr6 steel disks.We demonstrated that the DHM system is well suited to monitor the evolution of the wear track during sliding. We found that, with an acquisition time of 0.1 ms for the DHM, the maximal linear speed is 10 cm s −1 to have reliable images. We proved, via scanning electron microscope (SEM) pictures, that the lines in the sliding direction in all DHM images exist. We also validated the new tribometer by having an excellent correlation between the images and profiles of the wear track taken by the DHM with the ones from a confocal microscope. Finally, the new tribometer combined with the DHM has four advantages. It can test under vacuum and various atmospheric conditions. The evolution of the wear track is measured in situ and in real-time. Hence, the problem of replacing the sample is avoided. Thanks to the DHM technology, the vertical accuracy of the topographical measurement is 4 nm.

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Determination of the wear of machine parts by charged particle surface activation

Cited by 39 publications

References 16 publications

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

A simple, fast and low-cost method for in situ monitoring of topographical changes and wear rate of a complex tribo-system under mixed lubrication

Surface Wear Studies in Some Materials Using α-induced Reactions

A new ball-on-disk vacuum tribometer with in situ measurement of the wear track by digital holographic microscopy

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