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Hamad Karki
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Proceedings Papers

Development of an Oil and Gas Refinery Inspection Robot

John P. H. Steele, Qi Han, Hamad Karki, Khaled Al-Wahedi, Adewole A. Ayoade, Marshall R. Sweatt, Daniel P. Albert, W. Alex Yearsley
Proc. ASME. IMECE2014, Volume 4A: Dynamics, Vibration, and Control, V04AT04A016, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-36358
https://doi.org/10.1115/IMECE2014-36358
View Paper titled, Development of an Oil and Gas Refinery Inspection Robot
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Topics: Inspection, Robots, Sensors, Design, Errors, Acoustics, Algorithms, Computer software, Control rooms, Gas detectors
Proceedings Papers

Implementation of a Nonlinear Torsional Vibration Absorber for Suppression of Vibrations in Rotating Machinery

Ammaar Bin Tahir, Oleg Shiryayev, Nader Vahdati, Hamad Karki
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A064, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-63497
https://doi.org/10.1115/IMECE2013-63497
View Paper titled, Implementation of a Nonlinear Torsional Vibration Absorber for Suppression of Vibrations in Rotating Machinery
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Topics: Machinery, Vibration, Vibration absorbers, Nonlinear vibration, Resonance, Dampers, Design, Dimensions, Dynamic systems, Energy dissipation
Journal Articles

Draft: Stick-Slip Motions of a Rotor-Stator System

Nicholas Vlajic, Chien-Min Liao, Hamad Karki, Balakumar Balachandran
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. April 2014, 136(2): 021005.
Paper No: VIB-12-1078
https://doi.org/10.1115/1.4025994
Published Online: December 16, 2013
View Articletitled, Draft: Stick-Slip Motions of a Rotor-Stator System
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Topics: Dry friction, Rotors, Stators, Stick-slip, Vibration, Whirls, Drill strings
Proceedings Papers

Nonlinear Vibration Absorber for Mitigation of Torsional Vibrations

Ammaar Bin Tahir, Oleg Shiryayev, Hamad Karki, Nader Vahdati
Proc. ASME. IMECE2012, Volume 4: Dynamics, Control and Uncertainty, Parts A and B, 591-599, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-86715
https://doi.org/10.1115/IMECE2012-86715
View Paper titled, Nonlinear Vibration Absorber for Mitigation of Torsional Vibrations
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Topics: Nonlinear vibration, Vibration, Degrees of freedom, Energy dissipation, Optimization, Stiffness
Proceedings Papers

Adaptive Electromagnetic Torsional Tuned Vibration Absorber and its Application in Rotating Equipment

Taher Abu Seer, Nader Vahdati, Hamad Karki, Oleg Shiryayev
Proc. ASME. IMECE2012, Volume 12: Vibration, Acoustics and Wave Propagation, 117-125, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-88836
https://doi.org/10.1115/IMECE2012-88836
View Paper titled, Adaptive Electromagnetic Torsional Tuned Vibration Absorber and its Application in Rotating Equipment
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Topics: Vibration absorbers, Vibration, Electronics, Simulation results
Proceedings Papers

Rotor Torsion Vibrations in the Presence of Continuous Stator Contact

Nicholas Vlajic, Xianbo Liu, Hamad Karki, Balakumar Balachandran
Proc. ASME. IMECE2012, Volume 4: Dynamics, Control and Uncertainty, Parts A and B, 785-794, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89195
https://doi.org/10.1115/IMECE2012-89195
View Paper titled, Rotor Torsion Vibrations in the Presence of Continuous Stator Contact
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Topics: Dry friction, Rotors, Stators, Stick-slip, Torsion, Vibration, Whirls
Proceedings Papers

Stick-Slip and Whirl Motions of Drill Strings: Numerical and Experimental Studies

Nicholas Vlajic, Chien-Min Liao, Hamad Karki, Balakumar Balachandran
Proc. ASME. IDETC-CIE2011, Volume 4: 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A and B, 829-838, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47949
https://doi.org/10.1115/DETC2011-47949
View Paper titled, Stick-Slip and Whirl Motions of Drill Strings: Numerical and Experimental Studies
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Topics: Drill strings, Stick-slip, Whirls