Hojae Yi, Ph.D.

Hojae Yi, Ph.D.

  • Assistant Research Professor of Agricultural and Biological Engineering
228 Agricultural Engineering Building
Shortlidge Road

University Park, PA 16802

Areas of Expertise

  • Engineering Mechanics of Materials; Characterization of Physical and Mechanical Properties of Agricultural and Biological Materials
  • Powder Mechanics; Storage, Conveying, Mixing, Size Reduction, Flow, Segregation, and Compaction of Particulate Materials
  • Mathematical/numerical modeling, simulation, and analysis of mechanical behavior of particulate materials and biological materials
  • Applying mechanical engineering theories to the problems involving biological and particulate materials including renewable energy and consumer products

Education

  • 1998-2003 Ph. D. in Agricultural Engineering, Seoul National University, Seoul, S. Korea
  • 1996-1997 M.S. in Engineering. Dept. of Agricultural Engineering, Seoul National University. Suwon, S. Korea
  • 1992-1995 B.A. in Agricultural Engineering, Dept. of Agricultural Engineering, Seoul National University, Suwon, S. Korea
  • October 2018 - Current|
    Assistant Research Professor
    Dept. of Agricultural and Biological Engineering Department, Pennsylvania State University, University Park, PA, U.S.A
  • 2011 – 2018
    Research Associate
    Dept. of Agricultural and Biological Engineering Department, Pennsylvania State University, University Park, PA, U.S.A
  • February 2006 – 2010
    Post Doctorate Scholar
    Dept. of Agricultural and Biological Engineering Department, Pennsylvania State University, University Park, PA, U.S.A.
  • August 2003 – January 2006
    Guest Researcher
    Research Institute for Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
  • December 2001 – October 2003
    Assistant of the Computing Center
    College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
  • September 2000 – August 2001
    Visiting Scholar
    Agricultural and Biological Engineering Department, Pennsylvania State University, University Park, PA, U.S.A.

Publications

Effects of moisture on the fundamental mechanical properties in the prediction of the flowability of biomass, Yi, Hojae, Lanning, Christopher, Wamsley, Matthew, Puri, V, Dooley, James, 2020

Finite Element Modeling of Biomass Hopper Flow, Yi, Hojae, Puri, V, Lanning, Christopher, Dooley, James, 2020

Thermal properties of ‘Gala’ apples during growing season for predicting harvest time
Transactions of the ASABE, Caliskan-Aydogan, O., Yi, H., Schupp, J. R., Choi, D. D., Heinemann, P. H., Puri, V. M., 2020

Design of a biomass scale cubical triaxial tester, Lanning, Christopher J., Yi, Hojae, Dooley, James H., Puri, Virendra, Whitt, Jordan M., 2020

Overview of DOE flowability measurement and modeling project at forest concepts and Penn State University, Dooley, James H., Lanning, Christopher J., Yi, Hojae, Puri, Virendra, 2020

Finite element modeling of biomass hopper flow, Yi, Hojae, Puri, Virendra M., Lanning, Christopher J., Dooley, James H., 2020

Effects of moisture on the fundamental mechanical properties of the biomass flow models, Yi, Hojae, Lanning, Christopher J., Wamsley, M., Puri, Virendra M., Dooley, James H., 2020

Determination of fundamental mechanical properties of biomass using the cubical triaxial tester to model biomass flow, Yi, Hojae, Puri, Virendra M., Lanning, Christopher J., Dooley, James H., 2020

MicroCT imaging to determine coordination number and contact area of biomass particles in densified assemblies
Powder Technology, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2019

The stomatal flexoskeleton
Journal of Experimental Botany, Yi, Hojae, Chen, Yintong, Wang, James Z., Puri, Virendra M., Anderson, Charles T., 2019

Synergistic pectin degradation and guard cell pressurization underlie stomatal pore formation
Plant Physiology, Rui, Yue, Chen, Yintong, Yi, Hojae, Purzycki, Taylor, Puri, Virendra M., Anderson, Charles T., 2019

Micromechanical characterization of particle-particle bond in biomass assemblies formed at different applied pressure and temperature
KONA Powder and Particle Journal, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2019

Balancing strength and flexibility
Frontiers in Plant Science, Rui, Yue, Chen, Yintong, Kandemir, Baris, Yi, Hojae, Wang, James Z., Puri, Virendra M., Anderson, Charles T., 2018

Comparison of mechanical properties of ground corn stover, switchgrass, and willow and their pellet qualities
Particulate Science and Technology, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2018

Evaluation of dry steam preconditioning on switchgrass pellet quality metrics
Applied Engineering in Agriculture, Covelli, C. R., Yi, H., Karamchandani, A., Ciolkosz, D., Puri, V. M., 2018

Mechanical Effects of Cellulose, Xyloglucan, and Pectins on Stomatal Guard Cells of Arabidopsis thaliana
Frontiers in Plant Science, Yi, Hojae, Rui, Yue, Kandemir, Baris, Wang, James Z., Anderson, Charles T., Puri, Virendra M., 2018

Critical review on engineering mechanical quality of green compacts using powder properties
KONA Powder and Particle Journal, Yi, Hojae, Pandeya, Anuranjan, Karamchandani, Apoorva, Puri, Virendra M., 2018

POLYGALACTURONASE INVOLVED IN EXPANSION3 functions in seedling development, rosette growth, and stomatal dynamics in Arabidopsis thaliana
Plant Cell, Rui, Yue, Xiao, Chaowen, Yi, Hojae, Kandemir, Baris, Wang, James Z., Puri, Virendra M., Anderson, Charles T., 2017

Activation tagging of Arabidopsis POLYGALACTURONASE INVOLVED IN EXPANSION2 promotes hypocotyl elongation, leaf expansion, stem lignification, mechanical stiffening, and lodging
Plant Journal, Xiao, Chaowen, Barnes, William J., Zamil, M. Shafayet, Yi, Hojae, Puri, Virendra M., Anderson, Charles T., 2017

Single particle mechanical characterization of ground switchgrass in air dry and wet states using a microextensometer
Powder Technology, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2016

Integrating cell biology, image analysis, and computational mechanical modeling to analyze the contributions of cellulose and xyloglucan to stomatal function
Plant Signaling and Behavior, Rui, Yue, Yi, Hojae, Kandemir, Baris, Wang, James Z., Puri, Virendra M., Anderson, Charles T., 2016

The mechanical properties of plant cell walls soft material at the subcellular scale
Journal of Materials Science, Zamil, M. Shafayet, Yi, Hojae, Puri, Virendra M., 2015

Fundamental mechanical properties of ground switchgrass for quality assessment of pellets
Powder Technology, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2015

Examination of biological hotspot hypothesis of primary cell wall using a computational cell wall network model
Cellulose, Nili, Abdolmadjid, Yi, Hojae, Crespi, Vincent Henry, Puri, Virendra, 2015

Farm-Scale biomass pelletizer performance for switchgrass pellet production
Applied Engineering in Agriculture, Ciolkosz, Daniel Edward, Hilton, R., Swackhamer, C., Yi, Hojae, Puri, Virendra, Swomley, D., Roth, Gregory Wayne, 2015

Multiscale stress–strain characterization of onion outer epidermal tissue in wet and dry states
American Journal of Botany, Kim, Keekyoung, Yi, Hojae, Shafayet Zamil, M., Amanul Haque, M., Puri, Virendra M., 2015

Mechanical characterization of outer epidermal middle lamella of onion under tensile loading
American Journal of Botany, Zamil, M. Shafayet, Yi, Hojae, Puri, Virendra M., 2014

Development and validation of predictive relationships between mechanical properties of ground willow and pellet quality, Karamchandani, Apoorva, Yi, Hojae, Puri, V, 2014

Finite element approach to examine mechanical consequences of molecular structure of plant cell wall, Yi, Hojae, Puri, V, 2014

Measurement and comparison of mechanical properties of ground corn stover, switchgrass, and willow and their pellet qualities, Karamchandani, Apoorva, Yi, Hojae, Puri, V, 2014

Finite element approach to examine mechanical consequences of molecular structure of plant cell wall, Yi, Hojae, Puri, Virendra M., 2014

Development and validation of predictive relationships between mechanical properties of ground willow and pellet quality, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra, 2014

Measurement and comparison of mechanical properties of ground corn stover, switchgrass, and willow and their pellet qualities, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra, 2014

An architecture based FEM framework to bridge the subcellular scale to tissue scale mechanical properties, Zamil, Mohammad Shafayet, Yi, Hojae, Puri, Virendra, 2014

3-D milk fouling modeling of plate heat exchangers with different surface finishes using computational fluid dynamics codes
Journal of Food Process Engineering, Choi, W., Jun, S., Nguyen, L. T., Rungraeng, N., Yi, H., Balasubramanian, S., Puri, V. M., Lee, J., 2013

Characterizing microscale biological samples under tensile loading
American Journal of Botany, Zamil, M. S., Yi, Hojae, Haque, M. A., Puri, Virendra M., 2013

Stress gradient within powder en masse during hydrostatic compression
Powder Technology, Yi, Hojae, Puri, Virendra M., 2013

Determination of optimum densification conditions for production of corn stover pellets, Karamchandani, Apoorva, Yi, Hojae, Puri, V, 2013

Farm-scale biomass pelletizer performance for switchgrass pellet production, Hilton, R., Ciolkosz, D, Swomley, D., Yi, Hojae, Puri, V, Roth, G, 2013

Investigation of the plant cell wall's molecular structure models using the finite element modeling, Yi, Hojae, Zamil, M., Puri, V, 2013

Determination of optimum densification conditions for production of corn stover pellets, Karamchandani, Apoorva, Yi, Hojae, Puri, Virendra M., 2013

Farm-scale biomass pelletizer performance for switchgrass pellet production, Hilton, R., Ciolkosz, Daniel Edward, Swomley, D., Yi, Hojae, Puri, Virendra, Roth, Gregory Wayne, 2013

Investigation of the plant cell wall's molecular structure models using the finite element modeling, Yi, Hojae, Zamil, M. Shafayet, Puri, Virendra M., 2013

Structure based computational plant cell wall model, Yi, Hojae, Zamil, M. Shafayet, Puri, Virendra M., 2012

A device for plant cell wall testing in tensile loading, Zamil, Mohammad Shafayet, Haque, Aman, Yi, Hojae, Puri, Virendra M., 2012

Architecture based multiscale computational modeling of plant cell wall mechanics using finite element method, Yi, Hojae, Puri, V, 2011

Architecture based multiscale computational modeling of plant cell wall mechanics using finite element method, Yi, Hojae, Puri, Virendra M., 2011