Experimental Investigation of Gear Fault Using Vibration Signature
| dc.contributor.advisor | Tilahun, Daniel (PhD)) | |
| dc.contributor.author | Mamo, Behailu | |
| dc.date.accessioned | 2018-07-03T10:04:38Z | |
| dc.date.accessioned | 2023-11-18T06:29:14Z | |
| dc.date.available | 2018-07-03T10:04:38Z | |
| dc.date.available | 2023-11-18T06:29:14Z | |
| dc.date.issued | 2013-02 | |
| dc.description.abstract | Gear Fault detection is an important problem associated with many rotating machinery that is coupled with gearbox. A damage not detected in time can result in severe damage to machinery, catastrophic injuries, and substantial financial losses. On the other hand, if a fault is detected in its early stages, corrective and preventive actions can be taken to avoid any significant machine failure. From this perspective; the main objective of this thesis work is to investigate the presence of initial gear flunk fault by using behavioral variation of vibration signature as a tool without shutting down of the gearbox. This thesis outlines the experimental investigation and vibration signature analysis of gear (Number of teeth is 75) and pinion (Number of teeth is 25) flank fault (specifically on the pitch circle) of a single stage in line gearbox under different working condition i.e. with different input speed (600 RPM, 1000 RPM, and 1400 RPM),and with different external load (0 N-m, 1.5 N-m, 2.5 N-m, and 3.5 N-m) that is applied on the output shaft. The result is collected by using industrial oscilloscope in the form of frequency domain for both gear and pinion assembly with fault and without fault and the analysis is done by comparing the frequency domain result for faulted gear pair with a gear pair without fault. With respect to this outline; the experimental is done for the above different conditions and the result shows that the presence of the gear flank fault is indicated by the difference in magnitude in the first and second meshing frequency and difference in magnitude and number of side bands around the meshing frequency. So that this thesis work concludes that if there is a fault in gear flank, the presence is identified from magnitude increment in 1st and 2nd meshing frequency of the gear pair and also increment in magnitude and number of the side bands around the 1st and 2nd meshing frequency. Key words: Gear fault, External Load, Vibration signature, Fault Indicator, Mashing Frequency, mashing vibration, side band. | en_US |
| dc.description.sponsorship | Addis Ababa University | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/5863 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Gear fault; External Load;Vibration signature;Fault Indicator; Mashing Frequency; mashing vibration; side band | en_US |
| dc.title | Experimental Investigation of Gear Fault Using Vibration Signature | en_US |