1. Rai, A., & Upadhyay, S. H. "The application of semi-nonnegative matrix factorization for detection of incipient faults in bearings",Journal of Mechanical Engineering Science, pp.4543-4555, Vol.233, 2019
2. Tiwari Prashant & Upadhyay, S. H., "Degradation assessment of ball bearings utilizing curvilinear component analysis", Journal of Multi-body Dynamics, pp.714-730, Vol.233, 2019
3. Patel Sachin P., & Upadhyay, S. H., "Influence of roller defect and coupled roller–inner–outer race defects on the performance of cylindrical roller bearing", Journal of Multi-body Dynamics, pp.731-746, Vol.233, 2019
4. Patel Sachin P., & Upadhyay, S. H., "Nonlinear analysis of cylindrical roller bearing under the influence of defect on individual and coupled inner–outer race", Journal of Multi-body Dynamics, pp.404-428, Vol.233, 2019
5. Rai, A., & Upadhyay, S. H., "An integrated approach to bearing prognostics based on EEMD-multi feature extraction", Gaussian mixture models and Jensen-Rényi Divergence, Applied Soft Computing, Elsevier Publications (IF = 3.907); Citations =3, pp.36-50, Vol.71, 2018
6. Rai, A., & Upadhyay, S. H., "Intelligent bearing performance degradation assessment and remaining useful life prediction based on self-organising map and support vector regression", Journal of Mechanical Engineering Science, Sage Publications (I.F. = 1.015); Citations = 12., pp.1118-1132, Vol.232, 2018
7. Rai, A., & Upadhyay, S. H., "Bearing performance degradation assessment based on a combination of empirical mode decomposition and k-medoids clustering",Mechanical Systems and Signal Processing, Elsevier Publications (I.F. = 4.116); Citations = 31, pp.16–29, Vol.93, 2017
8. Rai, A., & Upadhyay, S. H., "The use of MD-CUMSUM and NARX neural network for anticipating the remaining useful life of bearings", Measurement, Elsevier Publications (I.F. = 2.359); Citations = 20., pp.397-410, Vol.111, 2017
9. Patel Utkarsh. A., Upadhyay S.H., "Nonlinear Dynamic response of Cylindrical Roller Bearing rotor system with 9 D.O.F model having a Combined Localized Defect at inner outer race of bearing", Tribology Transactions, pp.284-299, Vol.60, 2017
10. Rai, A., & Upadhyay, S. H., "A review on signal processing techniques utilized in the fault diagnosis of rolling element bearings", Tribology International, . Elsevier Publications (IF = 2.971); Citations = 160., pp.289-306, Vol.96, 2016
11. Patel Utkarsh. A., Upadhyay S.H., "An Analytical Model (7d.o.f) for the Prediction of the Vibration Response of Cylindrical Roller Element Bearings Due to a Combined Localized Defect", Journal of Multi-body Dynamics, 2015
12. Pandya D H., Upadhyay S.H. and S.P. Harsha, "Nonlinear dynamic analysis of high speed bearings due to combined localized defects", Journal of Vibration and Control, pp.2300–2313, Vol.20, 2014
13. Pandya D.H., Upadhyay S H and Harsha S. P., "Fault Diagnosis of Rolling Element Bearing by using Multinomial Logistic Regression and Wavelet Packet Transform-soft computing", Springer publishers, pp.255-266, Vol.18,2014
14. Utkarsh A. Patel , Upadhyay S. H., "Theoretical Model to Predict the Effect of Localized Defect on Dynamic Behavior of Cylindrical Roller Bearing at Inner Race and Outer Race", Journal of Multi-body Dynamics, SAGE PUBLICATION, pp.152-171, Vol.228, 2014
15. Pandya D.H., Upadhyay S H and Harsha S. P., "Fault Diagnosis of Rolling Element Bearing with Intrinsic Mode Function of Acoustic Emission data using APF-KNN", Expert Systems with Applications, Elsevier, pp.4137-4145, Vol.40, 2013
16. Pandya D.H., Upadhyay S H and Harsha S.P., "ANN based fault diagnosis of rolling element bearing using time-frequency domain feature", International Journal of Engineering Science and Technology, pp.2878-2886, Vol.4, 2012
17. Pandya D.H., Upadhyay S H and Harsha S. P., "Effect of localized defect on intermittent chaotic behavior of high speed rolling rearing", Journal of Material science & Engineering, OMICS Publishers, USA., pp.125, Vol.1, 2012
18. Upadhyay S.H., Jain S.C and Harsha S.P., "Analysis of Nonlinear Phenomena in High Speed Ball Bearing System due to Radial Clearance and Unbalanced Rotor Effects", Journal of Vibration and Control, pp.65-88, Vol.16, 2010
19. Upadhyay S.H., Jain S.C and Harsha S.P., "Vibration Signature Analysis of High Speed Unbalanced Rotor Supported by Rolling Element Bearings due to Off-sized Rolling Elements", International Journal of Acoustics and Vibration, pp.163- 171, Vol.14, 2009
20. Upadhyay S.H. Jain S. C. and Harsha S. P., "Chaos and Nonlinear Dynamic Analysis of High-Speed Rolling Element Bearings Due to Varying Number of Rolling Elements", International Journal of Nonlinear Sciences and Numerical Simulation, pp.323 – 332, Vol.10, 2009
21. Upadhyay S.H., Harsha S.P and Jain S.C., "Nonlinear Dynamics of High Speed Unbalanced Rotor Supported on Rolling Element Bearings", International Journal of Design Engineering, pp.191-204, Vol.2, 2009
22. Upadhyay S.H., Harsha S.P. and Jain S.C, "Nonlinear Dynamic Response Analysis of a High Speed Rotor Supported by Rolling Element Bearings due to Waviness", he International Journal of Mathematical Modeling, Simulation and Applications (IJMMSA), pp.323-333, Vol.2, 2009
23. Upadhyay S.H., Jain S.C and Harsha S.P., "Nonlinear Vibration Signature Analysis of High Speed Rotating Shaft due to Ball Size Variations and Varying Number of Balls", Part K: Journal of Multi-body Dynamics (IMechE), pp.83-105, Vol.223,2009
24. Upadhyay S.H., Jain S.C and Harsha S.P., "Nonlinear Vibration Signature Analysis of High Speed Rotor Due to Defects of Rolling Element", Advances in Theoretical and Applied Mechanics, pp.301-314, Vol.1, 2008
1. Rai, A., & Upadhyay, S. H., “Estimating the performance degradation of bearings based on multiscale-entropy and Support vector data description”, In Proceedings of the National Symposium on Rotor Dynamics, 2017 - NSRD 2017, IIT Patna, India, Dec., 12-13, 2017
2. Rai, A., & Upadhyay, S. H., “Bearing degradation process prediction based on PCA and regression trees”, In Proceedings of the National Tribology Conference 2016 -NTC 2016, IIT (BHU) Varanasi, India, Dec., 08-10, 2016
3. Rai, A., & Upadhyay, S. H., "Evaluation of the performance degradation of rolling element bearings based on a combination of empirical mode decomposition and fuzzy c-means", International Conference and Exhibition on Mechanical & Aerospace Engineering, Orlando, Florida, USA, Oct. 03-04, 2016
4. Rai, A., & Upadhyay, S. H., "Prognostics of rolling element bearings based on nonlinear autoregressive neural network with exogenous inputs", Conference on Vibrations in Rotating Machinery - VIRM 11, University of Manchester, Manchester, United Kingdom, Sept. 13-15, 2016
5. Patel J. P., Upadhyay S. H., “Predications of combined localized defects in roller bearing by using wavelet packet transform”, 4th National Symposium on Rotor Dynamics, January 2016, NIT Rourkela
6. Patel J. P., Upadhyay S. H., “Comparison between Artificial Neural Network and Support Vector Method for a Fault Diagnostics in Rolling Element Bearing”, Proceedings of ICOVP (ICOVP-0189), 12thInternational Conference on Vibration Problems, 14th-17th December 2015, IIT Guwahati
7. Rai, A., & Upadhyay, S. H., "A neural network approach for calculating the remaining useful life of bearings", In Proceedings of 60th Congress of ISTAM, MNIT, Jaipur, Rajasthan, India, Dec. 16-19, 2015
8. U.A.Patel, Upadhyay S. H. “ Effect of localized defect on the vibration behavior of cylindrical roller bearing rotor system” Proceeding of International conference in Advances in tribology and engineering system”, springer india 2014
9. Pandya D.H., Upadhyay S H and Harsha S. P., “The Effect of Localized Defect On Nonlinear Dynamic Behavior Of Balanced Rotor Supported By Deep Groove Ball Bearing”, organized by American Society for Mechanical Engineers, USA, IDETC/CIE 2013, August 4-7, 2013
10. Pandya D.H., Upadhyay S H and Harsha S. P., “Nonlinear Dynamic behavior of balanced rotor bearing system due to various localized defects”, International Conference on Advances in Tribology and Engineering Systems, Gujarat Technological University, Gujarat, October 15-17, 2013 (published by Springer)
11. Yadav, H. K., Upadhyay, S.H. and Harsha, S. P., “Nonlinear Dynamic Analysis Of High Speed Balanced Rotor Supported On Deep Groove Ball Bearings Due To Preload Effect” International Conference on Advances in Mechanical Engineering, College of Engineering Pune, May 2013, pp.81-82
12. Yadav, H. K., Upadhyay, S.H. and Harsha, S. P., “CHAOS - An unpredictable behavior due to the structural vibration in high speed unbalanced rotor”, International Conference on Computer Aided Engineering, IIT-Madras , December 19-21, 2013
13. Pandya D.H., Upadhyay S H and Harsha S. P., “Intermittent Chaotic Behavior of High Speed Ball Bearings Due to Localized Defects”, Proceedings of the International conference on Fourth International conference on Structural Stability and Dynamics (ICSSD-2012), Malaviya National Institute of Technology (MNIT), Jaipur, January 4 – 6, 2012, pp.406-143
14. Pandya D.H., Upadhyay S H and Harsha S. P., “Fault diagnosis of low speed rolling element bearing with AI and acoustic emission technique”- Third Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS – 2012), IIT Delhi, Delhi, December 5 -8, 2012, pp.311-314
15. Pandya D.H., Upadhyay S H and Harsha S. P., “Condition monitoring of high speed ball bearing using Hilbert hung transform”, Proceedings of the 8th International Conference on Industrial Tribology (ICIT) organized by Tribology Society of India and Indian oil corporation, Pune, Dec. 08-10, 2012, pp.26-27
16. Pandya D.H., Upadhyay S H and Harsha S. P., “Fault Diagnosis of Bearing with Supervised Machine Learning Techniques” International Congress on Computational Mechanics and Simulation (ICCMS), IIT Hyderabad, Hyderabad, December 9 -12, 2012, pp.92
17. Pandya D.H., Upadhyay S H and Harsha S. P., “Fault Diagnosis of Bearing with Soft Computing Techniques”, Proceedings of the International Conference on Innovations in Design and Manufacturing, IIITDM-Jabalpur, Dec. 05-07, 2012
18. Pandya D.H., Upadhyay S H and Harsha S. P., “Non-linear Dynamic Behavior of high speed ball bearing”, Proceedings of the International Conference on Innovations in Design and Manufacturing, IIITDM-Jabalpur, Dec. 05-07,2012
19. N. B. PATEL, Upadhyay, S.H. and S.P.Harsha, “Fault diagnosis of ball bearing using Acoustic emission technique”, 8th International Conference on Industrial Tribology (ICIT-2012), 7-9 December 2012, Pune (India)
20. N. B. Patel, Upadhyay, S.H. and S.P.Harsha, “Fault diagnosis of ball bearing with acoustic emission and KNN algorithm”, 3rd Nirma University International Conference on Engineering (NUiCONE 2012), 6-9 December 2012, Ahmedabad(India)
21. Upadhyay S.H., Sharma Satish C. and Harsha S.P. “Nonlinear Dynamic Analysis and Experimental Verification an Unbalanced Rotor Supported by Ball Bearings” ASME IDETC/CIE conf. August 28 – August 31, 2011, Washigton DC, USA.
22. D. H. Pandya, Alok Misra, Upadhyay S. H., S.P.Harsha, “Application of response surface methodology for determining vibration response for rolling element bearing” Proceedings of the 56th Congress of The Indian Society of Theoretical and Applied Mechanics (ISTAM), An International Meet, organized by Indian Institute of Technology, Kharagpur, at Sardar Vallabhbhai National Institute of Technology, SURAT-395 007,Gujarat, December 19 – 21, 2011, pp.43 – 50.
23. Pandya D.H., S.C.Sharma, Upadhyay S H and Harsha S. P., “Nonlinear Vibration Signature Analysis- the effect of varying number of balls and ball defect ”, Proceedings of the National Symposium of rotor dynamics (NSRD-2011), Indian Institute of Technology, Madras, December 19 -21, 2011
24. Upadhyay S.H., Harsha S.P. and Jain S.C. “Chaotic Dynamics of High Speed Rotating Shaft Supported by Rolling Element Bearings” ASME International Mechanical Engineering Congress & Exposition, held at Vancouver, British Columbia, November 12-18, 2010
25. Upadhyay S.H., Harsha S.P. and Jain S.C. “Effects of Ball Size Variation and Number of Balls on Nonlinear Vibrations Associated with High Speed Unbalanced Rotor Supported by Rolling Element Bearings” International Conf. on Vibration Problems (ICoVP) held at IIT Kharagpur, pp.11-18, Jan. 19-22, 2009
26. Upadhyay S.H., Harsha S.P. and Jain S.C. “Periodic, Quasi-Periodic and Chaotic Motion Analysis of High Speed Rolling Element Bearings Due to Surface Waviness” Symposium on Emerging Trends in Rotor Dynamics (IUTAM) (published by Springer) held at IIT Delhi, March 23-26, 2009
27. Kamra, R., Upadhyay S.H., Kankar, P.K., Jain, S. C., Sharma, Satish, C., and Harsha S.P. “ANN based fault diagnosis of Rolling Element Bearing” Symposium on Emerging Trends in Rotor Dynamics (IUTAM) (published by Springer) held at IIT Delhi, March 23- 26, 2009
28. Upadhyay S.H., Jain S.C. and Harsha S.P. “Vibration Analysis of an Unbalanced Rotating Shaft Due To Ball Waviness” ASME IDETC/CIE conf. August 30 - September 2, 2009, San Diego, California, USA.
29. Upadhyay S.H., Jain S.C. and Harsha S.P. “Dynamic Analysis of Ball Bearings Due to Clearance Effect” ASME IDETC/CIE conf. August 30 - September 2, 2009, San Diego, California, USA.
30. Upadhyay S.H., Harsha S.P. and Jain S.C. “Periodic, Quasi-Periodic and Chaotic Motion Analysis of a High Speed Rotor Supported by Rolling Element Bearings” International Conference on Advanced Mechanical Engineering, NIT Surat, August 3-5, 2009
31. Upadhyay S.H., Harsha S.P. and Jain S.C. “Nonlinear Vibration Signature Analysis — the Effects of Surface Waviness and Rotor Speed”3rd International Congress on Computational Mechanics and Simulation (ICCMS-09), IIT-Bombay, 1-5, 2009
32. Upadhyay S.H., Harsha S.P. and Jain S.C. “Chaotic, Sub-harmonic and Periodic Motion Analysis of a High Speed Balanced Shaft Supported on Roller Bearings” 12th Conference on Nonlinear Vibration, Dynamics and Multibody Systems, held at Virginia Tech, VA, USA, June 1-5, 2008
33. Upadhyay S.H., Jain S.C and Harsha S.P. “Nonlinear Vibration Signature Analysis of a Rotor Bearing System Due to Number of Rolling Elements” International Conference on Industrial Tribology (ICIT) held at SCOPE Convention centre-New Delhi, pp. 57 – 63, Nov. 6-8, 2008
34. Upadhyay S.H., Jain S.C and Harsha S.P. “Chaotic Dynamics of High-Speed Rotating Shaft with Varying Number of Rolling Elements” ISTAM (International Meet) held at Osmania University, Hyderabad, pp. 113-120, Dec. 25-27, 2008
35. Upadhyay S.H., Harsha S.P. and Jain S.C. “Nonlinear Vibration Signature Analysis of High Speed Unbalanced Rotor Supported by Rolling Element Bearings” International Conference on Advanced Mechanical Engineering held at NIT Surat, pp. 564-569, Dec. 15-17, 2008