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Journal Articles

Design Optimization of Angular Contact Ball Bearing Using Genetic Algorithm and Grid Search Method

Manpreet Singh, Rajiv Tiwari
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. May 2023, 145(5): 054501.
Paper No: TRIB-22-1130
https://doi.org/10.1115/1.4056352
Published Online: January 5, 2023
View Article titled, Design Optimization of Angular Contact Ball Bearing Using Genetic Algorithm and Grid Search Method
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Topics: Ball bearings, Bearings, Design, Genetic algorithms, Optimization, Sensitivity analysis
Journal Articles

Robust Dynamic Balancing of Dual Rotor-Active Magnetic Bearing System Through Virtual Trial Unbalances as Low and High Frequency Magnetic Excitation

Gyan Ranjan, Rajiv Tiwari, H. B. Nemade
Journal: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg
Publisher: ASME
Article Type: Research-Article
ASME J. Risk Uncertainty Part B. March 2023, 9(1): 011203.
Paper No: RISK-22-1015
https://doi.org/10.1115/1.4054695
Published Online: June 28, 2022
View Article titled, Robust Dynamic Balancing of Dual Rotor-Active Magnetic Bearing System Through Virtual Trial Unbalances as Low and High Frequency Magnetic Excitation
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Topics: Disks, Displacement, Excitation, Magnetic bearings, Rotors
Journal Articles

Multi-Objective Robust Optimization of Deep Groove Ball Bearings Considering Manufacturing Tolerances Based on Fatigue and Wear Considerations

Md Saif Ahmad, Rajiv Tiwari, Twinkle Mandawat
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. February 2022, 144(2): 022301.
Paper No: TRIB-20-1403
https://doi.org/10.1115/1.4050883
Published Online: May 4, 2021
View Article titled, Multi-Objective Robust Optimization of Deep Groove Ball Bearings Considering Manufacturing Tolerances Based on Fatigue and Wear Considerations
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Topics: Ball bearings, Bearings, Design, Film thickness, Optimization, Pareto optimization, Manufacturing, Dimensions, Geometry
Journal Articles

Transverse Vibration of Geared-Rotor Integrated With Active Magnetic Bearings in Identification of Multiple Faults

Gargi Majumder, Rajiv Tiwari
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. September 2021, 143(9): 091003.
Paper No: DS-20-1353
https://doi.org/10.1115/1.4050506
Published Online: April 15, 2021
View Article titled, Transverse Vibration of Geared-Rotor Integrated With Active Magnetic Bearings in Identification of Multiple Faults
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Topics: Errors, Gears, Magnetic bearings, Rotors, Vibration, Algorithms, Displacement, Damping, Noise (Sound), Modeling
Journal Articles

Modeling, Analysis, and Identification of Parallel and Angular Misalignments in a Coupled Rotor-Bearing-Active Magnetic Bearing System

Siva Srinivas R., Rajiv Tiwari, Ch Kanna Babu
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. January 2021, 143(1): 011007.
Paper No: DS-19-1160
https://doi.org/10.1115/1.4048352
Published Online: October 1, 2020
View Article titled, Modeling, Analysis, and Identification of Parallel and Angular Misalignments in a Coupled Rotor-Bearing-Active Magnetic Bearing System
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Topics: Bearings, Disks, Magnetic bearings, Rotors, Stiffness, Modeling, Vibration, Algorithms
Proceedings Papers

Experimental Investigation of Active Control of Cracked Rotor-Bearing System Equipped With Magnetic Bearing

Nilakshi Sarmah, Rajiv Tiwari
Proc. ASME. GTINDIA2019, Volume 1: Compressors, Fans, and Pumps; Turbines; Heat Transfer; Structures and Dynamics, V001T05A016, December 5–6, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2019-2647
https://doi.org/10.1115/GTINDIA2019-2647
View Paper titled, Experimental Investigation of Active Control of Cracked Rotor-Bearing System Equipped With Magnetic Bearing
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Topics: Bearings, Fracture (Materials), Magnetic bearings, Rotors
Proceedings Papers

Finite Element Model Based Full Spectrum Response Analysis of a Cracked Rotor With Internal and External Damping

Dipendra Kumar Roy, Rajiv Tiwari
Proc. ASME. GTINDIA2019, Volume 1: Compressors, Fans, and Pumps; Turbines; Heat Transfer; Structures and Dynamics, V001T05A017, December 5–6, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2019-2650
https://doi.org/10.1115/GTINDIA2019-2650
View Paper titled, Finite Element Model Based Full Spectrum Response Analysis of a Cracked Rotor With Internal and External Damping
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Topics: Damping, Finite element methods, Finite element model, Fracture (Materials), Rotors
Proceedings Papers

A Numerical Study on the Effect of Unbalance and Misalignment Fault Parameters in a Rigid Rotor Levitated by Active Magnetic Bearings

Prabhat Kumar, Rajiv Tiwari
Proc. ASME. GTINDIA2019, Volume 1: Compressors, Fans, and Pumps; Turbines; Heat Transfer; Structures and Dynamics, V001T05A003, December 5–6, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2019-2384
https://doi.org/10.1115/GTINDIA2019-2384
View Paper titled, A Numerical Study on the Effect of Unbalance and Misalignment Fault Parameters in a Rigid Rotor Levitated by Active Magnetic Bearings
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Topics: Magnetic bearings, Rotors
Proceedings Papers

Vibration Control of Spur Geared Rotor Systems With Transmission Errors by Active Magnetic Bearings

Gargi Majumder, Rajiv Tiwari
Proc. ASME. IDETC-CIE2019, Volume 10: 2019 International Power Transmission and Gearing Conference, V010T11A017, August 18–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: DETC2019-97176
https://doi.org/10.1115/DETC2019-97176
View Paper titled, Vibration Control of Spur Geared Rotor Systems With Transmission Errors by Active Magnetic Bearings
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Topics: Control equipment, Errors, Magnetic bearings, Rotors, Vibration control
Journal Articles

Multifault Diagnosis of Combined Hydraulic and Mechanical Centrifugal Pump Faults Using Continuous Wavelet Transform and Support Vector Machines

Janani Shruti Rapur, Rajiv Tiwari
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. November 2019, 141(11): 111013.
Paper No: DS-18-1403
https://doi.org/10.1115/1.4044274
Published Online: September 18, 2019
View Article titled, Multifault Diagnosis of Combined Hydraulic and Mechanical Centrifugal Pump Faults Using Continuous Wavelet Transform and Support Vector Machines
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Topics: Centrifugal pumps, Impellers, Support vector machines, Wavelet transforms, Wavelets, Signals, Principal component analysis, Algorithms, Flow (Dynamics), Trains
Journal Articles

Online Diagnostics of Mechanical and Electrical Faults in Induction Motor Using Multiclass Support Vector Machine Algorithms Based on Frequency Domain Vibration and Current Signals

Purushottam Gangsar, Rajiv Tiwari
Journal: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg
Publisher: ASME
Article Type: Research-Article
ASME J. Risk Uncertainty Part B. September 2019, 5(3): 031001.
Paper No: RISK-16-1141
https://doi.org/10.1115/1.4043268
Published Online: June 10, 2019
View Article titled, Online Diagnostics of Mechanical and Electrical Faults in Induction Motor Using Multiclass Support Vector Machine Algorithms Based on Frequency Domain Vibration and Current Signals
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Topics: Fault diagnosis, Motors, Signals, Stress, Support vector machines, Vibration, Electromagnetic induction, Testing, Engines, Algorithms
Journal Articles

Identification of Speed-Dependent Active Magnetic Bearing Parameters and Rotor Balancing in High-Speed Rotor Systems

Vikas Prasad, Rajiv Tiwari
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. April 2019, 141(4): 041013.
Paper No: DS-17-1315
https://doi.org/10.1115/1.4042026
Published Online: January 7, 2019
View Article titled, Identification of Speed-Dependent Active Magnetic Bearing Parameters and Rotor Balancing in High-Speed Rotor Systems
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Topics: Algorithms, Displacement, Magnetic bearings, Rotors, Stiffness, Modeling, Errors, Disks, Noise (Sound), Computer simulation
Journal Articles

Multifault Diagnosis of Induction Motor at Intermediate Operating Conditions Using Wavelet Packet Transform and Support Vector Machine

Purushottam Gangsar, Rajiv Tiwari
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. August 2018, 140(8): 081014.
Paper No: DS-17-1472
https://doi.org/10.1115/1.4039204
Published Online: March 13, 2018
View Article titled, Multifault Diagnosis of Induction Motor at Intermediate Operating Conditions Using Wavelet Packet Transform and Support Vector Machine
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Topics: Fault diagnosis, Motors, Signals, Stress, Support vector machines, Wavelets, Vibration, Electromagnetic induction
Proceedings Papers

A Compliant Algorithm to Diagnose Multiple Centrifugal Pump Faults With Corrupted Vibration and Current Signatures in Time-Domain

Janani Shruti Rapur, Rajiv Tiwari
Proc. ASME. GTINDIA2017, Volume 2: Structures and Dynamics; Renewable Energy (Solar, Wind); Inlets and Exhausts; Emerging Technologies (Hybrid Electric Propulsion, UAV, ...); GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery, V002T05A007, December 7–8, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2017-4615
https://doi.org/10.1115/GTINDIA2017-4615
View Paper titled, A Compliant Algorithm to Diagnose Multiple Centrifugal Pump Faults With Corrupted Vibration and Current Signatures in Time-Domain
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Topics: Algorithms, Centrifugal pumps, Vibration, Flow (Dynamics), Impellers, Noise (Sound), Suction, Support vector machines, Corrective actions, Cyber-physical systems
Proceedings Papers

Finite Element Analysis for Dynamic Response of Rotor-Bearing System With Cracked Functionally Graded Turbine Shaft

Debabrata Gayen, Debabrata Chakraborty, Rajiv Tiwari
Proc. ASME. GTINDIA2017, Volume 2: Structures and Dynamics; Renewable Energy (Solar, Wind); Inlets and Exhausts; Emerging Technologies (Hybrid Electric Propulsion, UAV, ...); GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery, V002T05A001, December 7–8, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2017-4534
https://doi.org/10.1115/GTINDIA2017-4534
View Paper titled, Finite Element Analysis for Dynamic Response of Rotor-Bearing System With Cracked Functionally Graded Turbine Shaft
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Topics: Bearings, Dynamic response, Finite element analysis, Rotors, Turbines, Fracture (Materials), Design, Whirls, Damage, Deformation
Proceedings Papers

Interaction Between Unbalance and Misalignment Responses in Flexibly Coupled Rotor Systems Integrated With AMB

Rangavajhala Siva Srinivas, Rajiv Tiwari, Ch. Kanna Babu
Proc. ASME. GTINDIA2017, Volume 2: Structures and Dynamics; Renewable Energy (Solar, Wind); Inlets and Exhausts; Emerging Technologies (Hybrid Electric Propulsion, UAV, ...); GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery, V002T05A002, December 7–8, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2017-4535
https://doi.org/10.1115/GTINDIA2017-4535
View Paper titled, Interaction Between Unbalance and Misalignment Responses in Flexibly Coupled Rotor Systems Integrated With AMB
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Topics: Rotors, Computer simulation, Disks, Excitation functions, Finite element analysis, Magnetic bearings, Matlab, Modeling, Vibration, Weight (Mass)
Proceedings Papers

Analysis of Time, Frequency and Wavelet Based Features of Vibration and Current Signals for Fault Diagnosis of Induction Motors Using SVM

Purushottam Gangsar, Rajiv Tiwari
Proc. ASME. GTINDIA2017, Volume 2: Structures and Dynamics; Renewable Energy (Solar, Wind); Inlets and Exhausts; Emerging Technologies (Hybrid Electric Propulsion, UAV, ...); GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery, V002T05A027, December 7–8, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GTINDIA2017-4774
https://doi.org/10.1115/GTINDIA2017-4774
View Paper titled, Analysis of Time, Frequency and Wavelet Based Features of Vibration and Current Signals for Fault Diagnosis of Induction Motors Using SVM
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Topics: Electromagnetic induction, Fault diagnosis, Motors, Signals, Support vector machines, Vibration, Wavelets, Rotors, Bearings, Machinery
Journal Articles

Experimental Time-Domain Vibration-Based Fault Diagnosis of Centrifugal Pumps Using Support Vector Machine

Janani Shruti Rapur, Rajiv Tiwari
Journal: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg
Publisher: ASME
Article Type: Technical Briefs
ASME J. Risk Uncertainty Part B. December 2017, 3(4): 044501.
Paper No: RISK-16-1087
https://doi.org/10.1115/1.4035440
Published Online: June 13, 2017
View Article titled, Experimental Time-Domain Vibration-Based Fault Diagnosis of Centrifugal Pumps Using Support Vector Machine
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Topics: Centrifugal pumps, Flow instability, Impellers, Support vector machines, Vibration, Fault diagnosis, Algorithms, Suction
Journal Articles

Model-Based Switching-Crack Identification in a Jeffcott Rotor With an Offset Disk Integrated With an Active Magnetic Bearing

Sandeep Singh, Rajiv Tiwari
Journal: Journal of Dynamic Systems, Measurement, and Control
Publisher: ASME
Article Type: Research-Article
J. Dyn. Sys., Meas., Control. March 2016, 138(3): 031006.
Paper No: DS-15-1135
https://doi.org/10.1115/1.4032292
Published Online: January 12, 2016
View Article titled, Model-Based Switching-Crack Identification in a Jeffcott Rotor With an Offset Disk Integrated With an Active Magnetic Bearing
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Topics: Fracture (Materials), Rotors, Disks, Displacement, Signals, Stiffness
Journal Articles

Multitude of Objectives Based Optimum Designs of Cylindrical Roller Bearings With Evolutionary Methods

Rajiv Tiwari, Rahul M. P. Chandran
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2015, 137(4): 041504.
Paper No: TRIB-14-1170
https://doi.org/10.1115/1.4030166
Published Online: October 1, 2015
View Article titled, Multitude of Objectives Based Optimum Designs of Cylindrical Roller Bearings With Evolutionary Methods
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Topics: Bearings, Design, Temperature, Bearing design, Rollers, Algorithms, Roller bearings