Hyock Ju Kwon

HJ Kwon is an Associate Professor in the Department of Mechanical and Mechatronics Engineering at the University of Waterloo.

His research topics include Elastography, Ultrasond Forming, Biomechanics, Fatigue and Fracture.

Elastography is a non-invasive testing method that measures the deformations of tissues using ultrasound to detect and classify tumourous lesions. Professor Kwon’s elastography research group is developing a new phase-based algorithm that has much better diagnostic performance and a protable ultrasound device that can display the elastogram on an i-pad or a tab.

His research group is also developing a new ultrasound micro forming device that can modify the surface of the material in microscopic to nanoscopic level. The modified surface is designed to have improved durability (micro peening) for weight reduction as well as wetting property (hydrophobicity) of the surface.

The research team is also developing methods to test the fracture toughness and fatigue properties of engineering and biological materials based on fracture and fatigue mechanics theories, such as Stress Intensity Factor, J-Integral, EWF Concept, and Stress- and Strain-Based Fatigue Analysis.

Bio-mechanics research aims to understand biologic systems through mechanics, develop non-invasive in vivo testing for live cells and organs, and establish a bridge between mechanical and biomedical engineering. Professor Kwon’s bio-mechanics-focused research projects include the “Measurement of the Cell-Induced Force in 3D Space” and “Development of Hybrid Hydrogel for Biomedical Application”.

• cell traction force measurement
• hydrogel
• mechanical measurement using optical technique
• digital Image correlation
• multi-photon microscopy
• optical tweezers
• Advanced Materials Joining
• Biomechanics and Biotechnology
• Constitutive modeling of soft bio-polymers
• Viscous fracture of soft materials
• Fatigue and Fracture

• 2007, Doctorate, Mechanical Engineering, University of Alberta
• 2003, Master's, Mechanical Engineering, University of Alberta
• 1988, Master's, Mechanical Engineering, KAIST
• 1985, Bachelor's, Mechanical and Design Engineering, Seoul Natiional University

• ME 627 - Fatigue Analysis and Design
  • Taught in 2015
• ME 219 - Mechanics of Deformable Solids 1
  • Taught in 2014, 2015, 2016, 2018, 2019
• ME 628 - Fracture Mechanics
  • Taught in 2014, 2016, 2019
• ME 481 - Mechanical Engineering Design Project 1
  • Taught in 2015, 2016, 2018
• ME 482 - Mechanical Engineering Design Project 2
  • Taught in 2016
• ME 380 - Mechanical Engineering Design Workshop
  • Taught in 2014, 2015, 2016
• ME 526 - Fatigue and Fracture Analysis
  • Taught in 2015, 2018

• Moslem Sadeghi-Goughari, Yanjun Qian, Soo Jeon, Sohrab Sadeghi and Hyock-Ju Kwon, An Experimental and Numerical Study on Tactile Neuroimaging: A Novel Minimally Invasive Technique for Intraoperative Brain Imaging, The International Journal of Medical Robotics and Computer Assisted Surgery, 14(2), 2018
  Link
• Moslem Sadeghi-Goughari, Soo Jeon and Hyock-Ju Kwon, Effects of Magnetic-Fluid Flow on Structural Instability of a Carbon Nanotube Conveying Nanoflow under a Longitudinal Magnetic Field, Physics Letters A, 381(35), 2018, 2898 - 2905
  Link
• Bonghun Shin, Soo Jeon, Jeongwon Ryu and Hyock-Ju Kwon, Compressed Sensing for Elastography in Portable Ultrasound, Ultrasonic Imaging, 39(6), 2017, 393 - 413
  Link
• Shin, Bonghun and Gopaul, Darindra and Fienberg, Samantha and Kwon, Hyock Ju, Application of Eshelby’s Solution to Elastography for Diagnosis of Breast Cancer, Ultrasonic imaging, 38(2), 2016, 115 - 136
• Rogalsky, Allan and Kwon, Hyock Ju and Lee-Sullivan, Pearl, The Rheological Injectability of N-succinyl-chitosan Solutions, Carbohydrate Polymers, 2016
• Shin, Bonghun and Kwon, Hyock-Ju and Han, Sang-Wook and Im, Chang Min, Fatigue life estimation of vertical probe needle for wafer probing, International Journal of Precision Engineering and Manufacturing, 16(12), 2015, 2509 - 2515