Plasticity and Damage Size Effects at the Micron and Nano Length Scales
The emerging areas of micro- and nano-devices exhibit important strength differences that result from continuous modification of the material microstructural characteristics with changing size, whereby the smaller is the size the stronger is the response. This resulted in an increasing need for basic research to better understand the underlying deformation mechanisms at the micron and nano length scales. For example, experimental works have shown increase in strength by decreasing the particle size in particle-reinforced composites, the diameter of thin wires in micro-torsion and uniaxial compression, the thickness of thin films in micro-bending and uniaxial tension, the grain size of polycrystalline materials, void size in porous media, the indentation depth in micro/nano indentation tests etc.
This symposium focuses upon presenting experimental, theoretical, and/or computational results that will increase our understanding of the deformation mechanisms responsible for size effects at the micron and nano length scales in metals and metal alloys, ceramics, polymers, composites, etc. Presentation topics include but are not limited to the following areas: Size effect in thin films, composites, micro/nano indentation, fracture toughness, fatigue resistance, initial yield strength, and hardening; grain size effect; surface and interface effects; strain-gradient plasticity/damage theories; dislocation mechanics; size effect testing techniques; and measurement of material length scales.
Organizers
-
Cemal Basaran
The State University of New York at Buffalo
cjb@eng.buffalo.edu -
George Z. Voyiadjis
Louisiana State University
voyiadjis@eng.lsu.edu -
Rashid K. Abu Al-Rub
Texas A&M University
979-862-6603
rabualrub@civil.tamu.edu
Schedule
Wednesday 1
Room | Time | Talk |
---|---|---|
Excellence Room | 8:00 AM |
Elasticity and Strength Size Effects in Zinc Oxide Nanowires Horacio Espinosa, Bei Peng, Ravi Agrawal, Eleftherios Gdoutos |
Excellence Room | 8:20 AM |
Nonlinear elasticity, slip, and mechanical twinning in ceramic crystals John Clayton |
Excellence Room | 8:40 AM |
A Methodology for Studying Hydrogen Embrittlement in a Steel Pipeline Mohsen Dadfarnia, Petros Sofronis, Brian P. Somerday, Ian M. Robertson |
Excellence Room | 9:00 AM |
Prediction of Micro and Nano Indentation Size Effects from Pyramidal and Spherical Indentation Rashid K. Abu Al-Rub |
Excellence Room | 9:20 AM |
Bauschinger Effect in Unpassivated Freestanding Metal Thin Films Jagannathan Rajagopalan, Jong H. Han, Taher A. Saif |
Wednesday 2
Room | Time | Talk |
---|---|---|
Excellence Room | 11:00 AM |
A Micromechanical Model for the Nonlinear Viscoelastic-Viscoplastic Behaviors of Hybrid Composites Anastasia Muliana, Jeongsik Kim |
Excellence Room | 11:20 AM |
Fatigue Damage Evolution and Reliability Assessment of Cu and Solder Interconnects in 3D Integrated Circuits Leila Ladani |
Excellence Room | 11:40 AM |
Fractal Pattern Formation at Elastic-Plastic Transition in Heterogeneous Materials Martin Ostoja-Starzewski, Jun Li |
Excellence Room | 12:00 PM |
Strain Gradient Plasticity with Interface Energy Effects using Consistent Thermodynamics George Voyiadjis, Babur Deliktas |
Excellence Room | 12:20 PM |
Role of Size Effects on Plastic Deformation of Free-Standing
Cu Films Ashraf Bastawros, Shakti S. Chauhan |
Wednesday 3
Room | Time | Talk |
---|---|---|
Excellence Room | 2:00 PM |
Interface and surface effects in the mechanical behavior of crystalline materials Marisol Koslowski, Abigail Hunter |
Excellence Room | 2:20 PM |
Strain Localization in Anisotropic Plastic Materials undergoing Microstructural Evolution Haizhen Pan, J.l. Bassani |
Excellence Room | 2:40 PM |
On the Higher-order Nonlocal Gradient Plasticity Theory and its Non-classical Microscopic Boundary Conditions for Size Effects Rashid K. Abu Al-Rub |
Excellence Room | 3:00 PM |
An analysis of the size effect in void growth in single crystals
using discrete dislocation dynamics Javier Segurado, Ignacio Romero, Javier Llorca |
Excellence Room | 3:20 PM |
Multiscale modeling of covalent materials through an atomistic field theory Liming Xiong, Youping Chen |