Education

Research Description

Computational Modeling and Mechanics: hierarchical models spanning the nano to the macro scales; prediction of material and structural response based on physically based material models Failure models for heterogeneous ductile and brittle systems: fracture mechanics; plasticity; microstructural effects due to grain-boundaries, cell walls, sub-grains and grain morphology Dynamic behavior of structures and materials: stress waves in solids; structural dynamics; mechanical behavior of composite structures subjected to high impact velocities; grain-boundary and interfacial effects Experimental Solid Mechanics: AFM, TEM, and SEM quantitative measurements of nano and micro failure surfaces; universal scaling laws, dynamic failure Micromechanics: strengthening and toughening mechanisms in composites; mechanical behavior and structural integrity; mechanical response of ceramics, intermetallics, and polymers; interfacial fracture mechanics Active materials: structural stability and design of smart structures and materials; integration of embedded devices within host systems

Honors and Awards

• R.J. Reynolds Award for Excellence in Teaching, Research and Extension, 2015

Publications

Effects of electron beam manufacturing induced defects on fracture in Inconel 718

Bond, D. M., & Zikry, M. A. (2020), ADDITIVE MANUFACTURING, 32. https://doi.org/10.1016/j.addma.2020.101059

Channel Cracking and Interfacial Delamination of Indium Tin Oxide (ITO) Nano-Sized Films on Polyethylene Terephthalate (PET) Substrates: Experiments and Modeling

Ziaei, S., Wu, Q., Fitch, J., Elbadry, M., & Zikry, M. A. (2019), EXPERIMENTAL MECHANICS, 59(5), 703–712. https://doi.org/10.1007/s11340-019-00534-y

How semi-coherent b.c.c. hydride interfacial interactions affect the inelastic deformation and fracture behavior of h.c.p. zirconium alloys

Ziaei, S., & Zikry, M. A. (2019), MECHANICS OF MATERIALS, 130, 1–8. https://doi.org/10.1016/j.mechmat.2018.12.015

Hydrogen in zirconium alloys: A review

Motta, A. T., Capolungo, L., Chen, L.-Q., Cinbiz, M. N., Daymond, M. R., Koss, D. A., … Zikry, M. A. (2019). [Review of , ]. JOURNAL OF NUCLEAR MATERIALS, 518, 440–460. https://doi.org/10.1016/j.jnucmat.2019.02.042

Microstructural Modeling of the Mechanical Behavior of Face-Centered Cubic Nanocrystalline-Twinned Systems

Hasan, T. S., Ziaei, S., & Zikry, M. (2019), METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 50A(2), 609–615. https://doi.org/10.1007/s11661-018-5008-2

Thermo-mechanical transformation of shape memory polymers from initially flat discs to bowls and saddles

Mailen, R. W., Wagner, C. H., Bang, R. S., Zikry, M., Dickey, M. D., & Genzer, J. (2019), SMART MATERIALS AND STRUCTURES, 28(4). https://doi.org/10.1088/1361-665X/ab030a

Differentiating between intergranular and transgranular fracture in polycrystalline aggregates

Bond, D. M., & Zikry, M. (2018), Journal of Materials Science, 53(8), 5786–5798. https://doi.org/10.1007/s10853-017-1847-2

A fully coupled thermo-viscoelastic finite element model for self-folding shape memory polymer sheets

Mailen, R. W., Dickey, M., Genzer, J., & Zikry, M. (2017), Journal of Polymer Science. Part B, Polymer Physics, 55(16), 1207–1219. https://doi.org/10.1002/polb.24372

A predictive framework for dislocation-density pile-ups in crystalline systems with coincident site lattice and random grain boundaries

Bond, D. M., & Zikry, M. (2017), Journal of Engineering Materials and Technology, 139(2). https://doi.org/10.1115/1.4035494

Controllable curvature from planar polymer sheets in response to light

Hubbard, A. M., Mailen, R. W., Zikry, M. A., Dickey, M. D., & Genzer, J. (2017), Soft Matter, 13(12), 2299–2308. https://doi.org/10.1039/C7SM00088J

View all publications via NC State Libraries

Grants

Vibration-Enhanced Underground Sensing (VEnUS)

US Dept. of Defense (DOD)(9/15/20 - 8/31/22)

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Vibration-Enhanced Underground Sensing (VEnUS)

Sponsor: US Dept. of Defense (DOD)

Start Date: 9/15/20

End Date: 8/31/22

Abstract

NCSU's effort wil be on developing algorithms for the detection of buried objects by the use of electro-maganetic-mechanical computational approaches.

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Collaborative Research: Template-free roll coatings for scalable manufacturing of regular microstructures by controlling ribbing instabilities

National Science Foundation (NSF)(9/01/20 - 8/31/23)

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Collaborative Research: Template-free roll coatings for scalable manufacturing of regular microstructures by controlling ribbing instabilities

Sponsor: National Science Foundation (NSF)

Start Date: 9/01/20

End Date: 8/31/23

Abstract

The long-term goal of the research is to develop an economical manufacturing method producing large-area superhydrophobic (SHPo) surfaces for hydrodynamic drag reduction (DR) by utilizing spontaneous 3-dimensional (3D) structure generation in roll coating of viscoelastic composite polymer. SHPo surfaces featured by 3D topographical structures are studied as a superior DR technology. While there is a spray-type product that coats a layer of random 3D geometry, it was found that the periodic linear grating structures provide superior DR performance stability. However, the high cost of producing large-area SHPo surfaces with periodic grating structure by the lithography-based micro-fabrication is still an obstacle to practical implementation. To address this challenge, we propose to utilize an inexpensive and scalable roll coating method producing the linear grates by the ribbing instability, which are spontaneously generated on the polymer surface due to the shear stress applied by the rollers. The specific objectives for the long-term goal are (1) to test the hypothesis that linear ribbing can be obtained near the instability onset condition predicted by a theoretical model and observed for the different manufacturing processes for polymer composites, and (2) to establish the fundamental knowledge of the relationship between the roll coating process conditions, the micro-grating structure geometry, and the DR efficiency.

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Modeling of Vibration-Enhanced Underground Sensing (VENUS)

US Army - Army Research Office(9/08/17 - 7/31/20)

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Modeling of Vibration-Enhanced Underground Sensing (VENUS)

Sponsor: US Army - Army Research Office

Start Date: 9/08/17

End Date: 7/31/20

Abstract

Humanitarian demining will be advanced by exploiting a new sensing modality based on magnetically induced vibrations of small metallic parts. An alternating or pulsed magnetic field induces vibrations of structures containing diamagnetic and paramagnetic materials. If these materials are conductive then the primary mechanism driving vibrations is the induction of eddy currents and subsequent Lorentz forces. While the physics is known, the analytic modeling is intractable which affects the ability to optimize a vibration-enhanced underground sensing system (VENUS). The main problem addressed in this proposal is researching a working mathematical model of a complex interacting system involving multiple physics, multiple scales, and multiple analysis domains. This project will explore the abstraction levels necessary to achieve usable multi-physics simulations of magnetically induced mechanical vibrations accounting for different material types, ageing effects, construction variability, and the effect of different soil types.

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Understanding AM Solidification Profile Effects on Material Inhomogenieties, Defects, and Qualification

US Navy(6/01/17 - 12/01/17)

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Understanding AM Solidification Profile Effects on Material Inhomogenieties, Defects, and Qualification

Sponsor: US Navy

Start Date: 6/01/17

End Date: 12/01/17

Abstract

This research project will develop a thermo-mechanical model of the Electron Beam Melting process that will predict how the process parameters will affect the resulting microstructure and potential defects that are formed during the process. The model will be validated via experiments and the resulting microstructures will be analyzed by our collaborators. The experiments will be using different speed function and the resulting microstructures and defects will be analyzed. The goal of the project is to finally fabricate a complex geometry where the properties and microstructures can be predicted by the developed thermo-mechanical model.

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Development of a Mechanistic Hydride Behavior Model for Spent Fuel Cladding Storage and Transportation

US Dept. of Energy (DOE)(10/01/17 - 9/30/21)

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Development of a Mechanistic Hydride Behavior Model for Spent Fuel Cladding Storage and Transportation

Sponsor: US Dept. of Energy (DOE)

Start Date: 10/01/17

End Date: 9/30/21

Abstract

We will model the failure behavior of zircaloys subjected to extreme changes in load and temperature.

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Feasibility Project: Mechanical Experiments for Adhesion Strengths of ITO and IZO Thin Films

Eastman Chemical Company(1/15/16 - 9/15/16)

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Feasibility Project: Mechanical Experiments for Adhesion Strengths of ITO and IZO Thin Films

Sponsor: Eastman Chemical Company

Start Date: 1/15/16

End Date: 9/15/16

Abstract

Conduct mechanical strength and failure experiments pertaining to ITO/IZO thin films to determine the adhesion strength of ITO and IZO thin films and to understand how cracks can initiate cohesively either in the thin film or along the interface.

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Army Research Proposal for a Workshop on Nanomanufacturing

US Army - Army Research Office(9/03/12 - 10/02/13)

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Army Research Proposal for a Workshop on Nanomanufacturing

Sponsor: US Army - Army Research Office

Start Date: 9/03/12

End Date: 10/02/13

Abstract

A workshop is proposed for nanomanufacturing related to rapid output for specialized products

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Mechanical Properties of Organic Solar Cells

National Science Foundation (NSF)(5/01/12 - 4/30/16)

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Mechanical Properties of Organic Solar Cells

Sponsor: National Science Foundation (NSF)

Start Date: 5/01/12

End Date: 4/30/16

Abstract

Organic semiconductors have the potential to revolutionize macroelectronic devices including solar cells and displays. Organic solar cells, in particular, may provide renewable energy that is cost competitive with fossil fuel sources. A key aspect of this technology is the inherent flexibility and low temperature processing methods of the organic materials. These attributes allow for low cost roll-to-roll production onto lightweight plastic substrates with potential for simpler installation in traditional implementation settings as well as employment in unique applications afforded by their thin film flexible characteristics. While flexibility is critical to the success of organic solar cells, there has been limited research into the mechanical properties of the active layer of these devices. The proposed research aims to investigate the mechanical properties of the active layer of organic solar cells.

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DESIGN OF A NEW MARS MINI-ROVER

National Aeronautics & Space Administration (NASA)(10/17/11 - 2/29/12)

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DESIGN OF A NEW MARS MINI-ROVER

Sponsor: National Aeronautics & Space Administration (NASA)

Start Date: 10/17/11

End Date: 2/29/12

Abstract

Professor Zikry will be teaching the Mechanical Engineering Senior Design Class at NCSU this fall. These funds will be used to sponsor 4-5 teams of 4 students each, who will work on small scale robots that could be carried and deployed off from a larger platform. These robots should seek to access some form of extreme terrain that might be found on Mars. Examples include, but are not limited to crater walls, lava tubes, subsurface water flows. Specifically, the money will be used as the team's hardware budgets, allowing them to buy motors, sensors, and electronics for their projects. The students will be required to make a final presentation on their efforts.

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ONR Proposal

US Navy-Office Of Naval Research(6/01/11 - 9/30/15)

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ONR Proposal

Sponsor: US Navy-Office Of Naval Research

Start Date: 6/01/11

End Date: 9/30/15

Abstract

In the proposed research, new three-dimensional crystalline dislocation-density based plasticity formulations will be used with grain-boundary (GB) kinematic interfacial schemes, new void nucleation and growth formulations, specialized computational models, and experimental measurements to predict how failure initiates and how it evolves, as transgranular or intergranular modes, to complete rupture in high strength steels, such as HSLA 100, dual-phase steels, and bainitic steels. This methodology will be used to determine how dislocation densities evolve and accumulate on different slip-systems in polycrystalline aggregates representative of high strength steels that will account for combinations of f.c.c. parent and b.c.c. habit planes that is physically representative of high strength steel alloys.

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