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John H. Crews
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Proceedings Papers

Development of Robust Control Algorithms for Shape Memory Alloy Bending Actuators

John H. Crews, Ralph C. Smith, Jennifer C. Hannen
Proc. ASME. SMASIS2012, Volume 1: Development and Characterization of Multifunctional Materials; Modeling, Simulation and Control of Adaptive Systems; Structural Health Monitoring, 391-400, September 19–21, 2012
Paper No: SMASIS2012-7989
DOI: https://doi.org/10.1115/SMASIS2012-7989
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Topics: Actuators, Algorithms, Robust control, Shape memory alloys, Temperature, Control equipment, Sliding mode control, Parameter estimation, Uncertainty, Chain
Proceedings Papers

Modeling and Experimental Validation of Shape Memory Alloy Bending Actuators

Casey D. Haigh, John H. Crews, Shiquan Wang, Gregory D. Buckner
Proc. ASME. SMASIS2012, Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 79-87, September 19–21, 2012
Paper No: SMASIS2012-7974
DOI: https://doi.org/10.1115/SMASIS2012-7974
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Topics: Actuators, Modeling, Shape memory alloys, Composite materials, Design, Phase transitions, Wire, Blood vessels, Catheters, Equilibrium (Physics)
Proceedings Papers

Characterization and Modeling of Opposing SMA-Wire System for Multifunctional, Resistance-Based Controls Applications

Stephen J. Furst, John H. Crews, Stefan Seelecke
Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2, 97-106, September 18–21, 2011
Paper No: SMASIS2011-4987
DOI: https://doi.org/10.1115/SMASIS2011-4987
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Topics: Modeling, Wire, Springs, Bending (Stress), Actuators, Deflection, Stress, Calibration, Control equipment, Heating
Proceedings Papers

Density Function Optimization for the Homogenized Energy Model of Shape Memory Alloys

John H. Crews, Ralph C. Smith
Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 371-379, September 18–21, 2011
Paper No: SMASIS2011-5036
DOI: https://doi.org/10.1115/SMASIS2011-5036
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Topics: Density, Optimization, Shape memory alloys, Stress, Probability, Accounting, Algorithms, Genetic algorithms, Optimization algorithms, Real-time control
Proceedings Papers

Multi-Objective Design Optimization of a Shape Memory Alloy Actuated Robotic Catheter

John H. Crews, Gregory D. Buckner
Proc. ASME. SMASIS2011, ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 381-389, September 18–21, 2011
Paper No: SMASIS2011-5037
DOI: https://doi.org/10.1115/SMASIS2011-5037
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Topics: Catheters, Design, Optimization, Robotics, Shape memory alloys, Tendons, Modeling, Stiffness, Ablation (Vaporization technology), Actuators
Proceedings Papers

Design and Control of a Shape Memory Alloy Actuated Robotic Catheter

Arun S. Veeramani, John H. Crews, Gregory D. Buckner, Stephen B. Owen, Richard C. Cook, Gil Bolotin
Proc. ASME. DSCC2008, ASME 2008 Dynamic Systems and Control Conference, Parts A and B, 1131-1138, October 20–22, 2008
Paper No: DSCC2008-2255
DOI: https://doi.org/10.1115/DSCC2008-2255
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Topics: Catheters, Design, Robotics, Shape memory alloys, Control equipment, Ablation (Vaporization technology), Artificial neural networks, Engineering prototypes, Feedback, Imaging
Proceedings Papers

Development of a Shape Memory Alloy Actuated Catheter for Cardiovascular Procedures

Arun S. Veeramani, John H. Crews, Gregory D. Buckner, Stephen B. Owen, Richard C. Cook, Gil Bolotin
Proc. ASME. BIOMED2008, ASME 2008 3rd Frontiers in Biomedical Devices Conference, 29-30, June 18–20, 2008
Paper No: BioMed2008-38076
DOI: https://doi.org/10.1115/BioMed2008-38076
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Topics: Cardiovascular system, Catheters, Shape memory alloys, Design, Ablation (Vaporization technology), Deflection, Dynamic models, Engineering prototypes, Heating, Imaging
Journal Articles

Dynamic Behavior of SMA Actuated Catheter

Arun S. Veeramani, Gregory D. Buckner, Stephen B. Owen, John H. Crews, Richard C. Cook, Gil Bolotin
Journal: Journal of Medical Devices
Article Type: Design Of Medical Devices Conference Abstracts
J. Med. Devices. June 2008, 2(2): 027556.
DOI: https://doi.org/10.1115/1.2936116
Published Online: June 25, 2008
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Topics: Catheters, Heat transfer