Experimental investigation into the effect of noise and damping using composite spur gear

Sharma, Atul; Aggarwal, Manjeet; Singh, Lakhwinder

doi:10.1016/j.matpr.2017.02.156

Cited by 11 publications

(3 citation statements)

References 10 publications

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“…Authors concluded that noise emission was reduced by about 5 dB if compared with a steel/steel gear pair. Sharma et al [ 36 ] investigated the noise and damping of polymer and composite spur gears operating at different rotational speeds. Their experimental results indicated that glass-fibre-reinforced polymer spur gears are more appropriate than metal gears in light-load-power-transmission applications due to their lower noise and damping factor.…”

Section: Introductionmentioning

confidence: 99%

Noise Evaluation of Coated Polymer Gears

2023

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A comprehensive experimental investigation of the noise evaluation of coated spur polymer gears made of POM was performed in this study. The three Physical Vapour Deposition (PVD) coatings investigated were aluminium (Al), chromium (Cr), and chromium nitrite (CrN). The gears were tested on an in-house-developed testing machine under a torque of 20 Nm and at a rotational speed of 1000 rpm. The noise measurements were performed with the tested gear pair on the testing device with a sound-proof acoustic foam used for the acoustic sound-proof insulation. The sound signal was analysed in time, frequency, and time–frequency domains and typical phenomena were identified in the signal. Experimental results showed that the noise level was higher for polymer gears with different coatings if compared to the polymer gears without coatings. With sound analysis in the time–frequency domain, precise degradation of the coatings could be noticed. In future studies, it would be appropriate to use a new method for signal analysis, e.g., high-order statistics and hybrid technique.

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Section: Introductionmentioning

confidence: 99%

Noise Evaluation of Coated Polymer Gears

2023

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“…The excitation of gear noise was categorised into a few main groups according to the geometrical orientation of a gear. Sharma et al [ 31 ] investigated noise and damping of polymers and composite spur gears and concluded that polymers and reinforced polymers were a good solution for light-load drive systems with low noise. Vibration fault detection of polymer gears was studied by Kumar et al [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Noise Evaluation of S-Polymer Gears

et al. 2022

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In this study, an acoustic behaviour of S-polymer gears made of the material combination POM/PA66 was investigated and compared to the standardised involute gears (E-gears). Basic evaluating characteristics included noise during operation, which is of particular significance when noise reduction is expected. The measured signals were analysed in time and frequency domains and the levels of acoustic activity were compared. The experimental results have shown that the sound pressure level of both E- and S-polymer gears are proportional to the torque. However, the comprehensive noise evaluation has shown some advantages of S-polymer gears if compared to the E-polymer gears. In that respect, S-polymer gears were found more appropriate for noise reduction of gear drive systems in the case of normal loading and typical drive speed. Future studies in the operating behaviour of S-polymer gears could also cover noise evaluation using new methods of sound signal analysis at different temperatures of gears.

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“…Even if it is possible to use some countermeasures against noise on the gears after they have been designed and built, in the design phase of a gearbox, predicting all of the noise reduction factors related to meshing and components—such as the supports, the transmission shafts, and the cases—is always preferred. In fact, transmission shafts, bearings, and their respective cases affect the acoustic emissions in a significant way, and they can be monitored during the design phase [ 15 , 16 , 17 ]. Meshing errors resulting from tolerances create an oscillation motion overlaying the uniform rotation of the mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Noise Reduction in Spur Gear Systems

Liguori

Armentani

Bertocco

et al. 2020

Entropy

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This article lists some tips for reducing gear case noise. With this aim, a static analysis was carried out in order to describe how stresses resulting from meshing gears affect the acoustic emissions. Different parameters were taken into account, such as the friction, material, and lubrication, in order to validate ideas from the literature and to make several comparisons. Furthermore, a coupled Eulerian–Lagrangian (CEL) analysis was performed, which was an innovative way of evaluating the sound pressure level of the aforementioned gears. Different parameters were considered again, such as the friction, lubrication, material, and rotational speed, in order to make different research comparisons. The analytical results agreed with those in the literature, both for the static analysis and CEL analysis—for example, it was shown that changing the material from steel to ductile iron improved the gear noise, while increasing the rotational speed or the friction increased the acoustic emissions. Regarding the CEL analysis, air was considered a perfect gas, but its viscosity or another state equation could have also been taken into account. Therefore, the above allowed us to state that research into these scientific fields will bring about reliable results.

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Experimental investigation into the effect of noise and damping using composite spur gear

Cited by 11 publications

References 10 publications

Noise Evaluation of Coated Polymer Gears

Noise Evaluation of Coated Polymer Gears

Noise Evaluation of S-Polymer Gears

Noise Reduction in Spur Gear Systems

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