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Zehnder Research Group

Fracture, failure & dynamics of micro- and macro-scale structures and materials

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  • Welcome
  • Research
    • Self Healing Hydrogels
    • Nonlinear dynamics of MEMS oscillators
    • High Temperature Composites
    • Strength of Nano-scale Structures
    • Damage Tolerance of Composite Materials and Structures
  • Members
    • Jikun Wang
  • Publications
    • MEMS
    • Soft Materials
    • Polymer Matrix Composites
    • Mechanics of Fracture
    • Structural Geology
    • Engineering Education
    • Metal Cutting
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Category: Uncategorized

June 2, 2023June 2, 2023 Alan Taylor Zehnder

Congratulations to Jikun Wang, Ph.D.

Dr. Jikun Wang completed his Ph.D. in Mechanical Engineering in May 2023.  His thesis was on “Time-dependent Damage of Soft Materials with Bond Breaking and Healing Kinetics.” Congratulations Jikun!  

June 2, 2023June 2, 2023 Alan Taylor Zehnder

Paper on neural net for constitutive modeling

Our paper “Determination of Material Parameters in Constitutive Models using Adaptive Neural Network Machine Learning ,” in JMPS is now available on-line at https://authors.elsevier.com/a/1hB7n_WmNpkpW 

December 5, 2022 Alan Taylor Zehnder

New paper on nonlinear viscoelasticity

Jikun Wang, Kunpeng Cui, Bangguo Zhu, Jian Ping Gong, Chung-Yuen Hui, Alan T. Zehnder, Load transfer between permanent and dynamic networks due to stress gradients in nonlinear viscoelastic hydrogels, Extreme Read More …

May 6, 2022May 6, 2022 Alan Taylor Zehnder

New paper on synchronization of coupled MEMS oscillators

Bhaskar, M. Walth, R. H. Rand and A. T. Zehnder, “Bistability in Coupled Opto-Thermal Micro-Oscillators,” Journal of Microelectromechanical Systems, https://doi.org/10.1109/JMEMS.2022.3169430 . (2022) In this work we experimentally investigate the dynamics Read More …

April 4, 2022April 4, 2022 Alan Taylor Zehnder

Zehnder recognized by 2021 S. Nemat-Nasser Award from Society for Experimental Mechanics

https://sem.org/awardsnematnasser  

May 14, 2020May 14, 2020 Alan Taylor Zehnder

New article: Micro-CT Imaging of Fibers in Composite Laminates under High Strain Bending

Experimental Techniques, 2020.  

September 5, 2019September 5, 2019 Alan Taylor Zehnder

New article on crack growth in PVA hydrogel

Crack Propagation in a PVA Dual-Crosslink Hydrogel: Crack Tip Fields Measured using Digital Image Correlation, published in Mechanics of Materials, is now on-line: https://authors.elsevier.com/a/1Zg-Xc7qwU6uo This is available to anyone up Read More …

September 3, 2019September 3, 2019 Alan Taylor Zehnder

Congratulations to Mincong Liu, Ph.D.

Mincong Liu recently (June 2019) completed his Ph.D. on the mechanical behavior of hydrogels.  His work advanced the use of digital image correlation (DIC) for fracture in soft materials and Read More …

June 26, 2019June 26, 2019 Alan Taylor Zehnder

Professor Zehnder named a Fellow of the Society for Experimental Mechanics

In recognition of distinguished contributions to the field of experimental mechanics, and service to that field through the Society, Professor Zehnder was recognized as a Fellow of the Society for Read More …

May 7, 2019 Alan Taylor Zehnder

New papers on hydrogel fracture

“Application of Digital Image Correlation (DIC) to the Measurement of Strain Concentration of a PVA Dual-Crosslink Hydrogel Under Large Deformation,” published online in Experimental Mechanics, (2019), http://link.springer.com/article/10.1007/s11340-019-00520-4 “Crack tip stress Read More …

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Recent News

  • Congratulations to Jikun Wang, Ph.D. June 2, 2023
  • Paper on neural net for constitutive modeling June 2, 2023
  • New paper on nonlinear viscoelasticity December 5, 2022
  • New paper on synchronization of coupled MEMS oscillators May 6, 2022
  • Zehnder recognized by 2021 S. Nemat-Nasser Award from Society for Experimental Mechanics April 4, 2022

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