Vernekar, K.Kumar, H.Gangadharan, K.V.2026-02-052015Proceedings of the Indian National Science Academy, 2015, 81, 5, pp. 1177-11823700046https://doi.org/10.16943/ptinsa/2015/v81i4/48270https://idr.nitk.ac.in/handle/123456789/26348This paper presents an experimental investigation on damage detection of internal combustion (IC) engine gear box using conventional vibration spectrum and cepstrum analysis. Experiment was carried out on two stroke internal combustion engine gearbox without considering the combustion. Vibration signals were collected for healthy as well as defective gear condition. The signals were analysed in time domain, frequency domain and cepstrum plots for fault detection. An experimental result demonstrates the dynamic behaviour in frequency domain, which is dominated by gear mesh frequency (GMF) and its harmonics.Based on the experimental results obtained, spectrum and cepstrum analysis can be effectively used for fault prediction of machine components. © Printed in India.Combustion equipmentGearsShafts (machine components)Cepstrum analysisCombustion enginesEngine gearboxesExperimental investigationsFaults detectionFrequency domainsGear-boxInternal combustionSpectra analysisVibration spectrum analysisInternal combustion engines