RESEARCH WORKSHOP ON "STATISTICAL MECHANICS OF PLASTIC DEFORMATION"

Administration

Description

	In recent years there has been a growing demand for applying statistical physics concepts to materials problems.  In particular, this is true for problems related to plasticity, such as strength, formability and failure of metals.  While plasticity has for a long time been considered a domain of materials scientists and engineers, it is now being recognized that more advanced theoretical concepts can contribute to predicting the plastic deformation behaviour on microscopic and mesoscopic scales.  On these scales, plasticity is governed by the complex dynamics of systems of interacting defects whose characterization necessitates advanced experimental and theoretical tools. In this perspective, plasticity provides an interesting field of application for non-equilibrium statistical physics concepts such as intermittency, fractal patterning, nonlinear waves, criticality and chaos.
 
	The aim of the Workshop is to provide a forum dedicated to the exchange between materials scientists working in plasticity and statistical physicists interested in materials problems.

Material

announcement bulletin list of participants

RESEARCH WORKSHOP ON "STATISTICAL MECHANICS OF PLASTIC DEFORMATION" | (smr 1399)

Go to day

Monday, 4 March 2002

08:30 - 09:00 Opening Remarks
- 08:30 Opening Remarks 30'
09:00 - 09:45 Self-organized criticality
- 09:00 Self-organized criticality 45'
  
  Speaker: A. Vespignani (ICTP)
10:00 - 10:15 Strain as a time-dependent stochastic process
- 10:00 Strain as a time-dependent stochastic process 15'
  
  Speaker: R. Thomson (NIST)
10:30 - 10:45 Coffee Break
- 10:30 Coffee Break 15'
11:00 - 11:15 Avalanches and scaling in viscoplastic deformation
- 11:00 Avalanches and scaling in viscoplastic deformation 15'
  
  Speaker: C. Miguel (University of Barcelona)

11:30 - 11:45 Power laws in creep - broad patterns and possible origins

11:30 Power laws in creep - broad patterns and possible origins 15'

Speaker:	G. Daehn (Ohio State University)
Material:	abstract

12:00 - 12:15 Crossover in jerky flow: Chaos to criticality
- 12:00 Crossover in jerky flow: Chaos to criticality 15'
  
  Speaker: S. Noronha (Virigina Tech)
12:30 - 13:45 Lunch Break
- 12:30 Lunch Break 1h15'
14:00 - 14:15 Scaling of deformation-induced microstructures
- 14:00 Scaling of deformation-induced microstructures 15'
  
  Speaker: D. Hughes (Sandia National Laboratories)
14:30 - 14:45 Acoustic emission analysis of coated superalloys
- 14:30 Acoustic emission analysis of coated superalloys 15'
  
  Speaker: I. Vougiouklakis (Joint Research Center)
15:00 - 15:15 Statistical mechanics of viscoplastic deformation, AE
- 15:00 Statistical mechanics of viscoplastic deformation, AE 15'
  
  Speaker: J. Weiss (CNRS)
15:30 - 15:45 Coffee Break
- 15:30 Coffee Break 15'

16:00 - 16:15 Submicron resolution 3D X-ray structural microscopy

16:00 Submicron resolution 3D X-ray structural microscopy 15'

Speaker:	B.C. Larson (Oakridge National Laboratory)
Material:	abstract

16:30 - 16:45 X-ray studies of statistical properties of dislocation systems
- 16:30 X-ray studies of statistical properties of dislocation systems 15'
  
  Speaker: F. Szekely (Ëotvos University)
17:00 - 17:15 Surface morphology of deformed crystals studied by AFM
- 17:00 Surface morphology of deformed crystals studied by AFM 15'
  
  Speaker: A. Schwab (Techical University)
17:30 - 17:45 Experimental measurments of the heterogeneous nature of slip
- 17:30 Experimental measurments of the heterogeneous nature of slip 15'
  
  Speaker: L. Levine (NIST)
20:00 - 20:00 Get-Together Party

Location: Main Building Cafeteria
- 20:00 Get-Together Party

Tuesday, 5 March 2002

09:00 - 09:45 Pinning, depinning, and creep of topological defects in random media

09:00 Pinning, depinning, and creep of topological defects in random media 45'

Speaker:	T. Nattermann (University of Cologne)
Material:	abstract

10:00 - 10:15 Depinning, percolation,& size effects in hardening
- 10:00 Depinning, percolation,& size effects in hardening 15'
  
  Speaker: J. Gil Sevillano (CEIT, Spain)
10:30 - 10:45 Coffee Break
- 10:30 Coffee Break 15'
11:00 - 11:15 Pinning/Depinning in the Dislocation Dynamics of Ni3Al
- 11:00 Pinning/Depinning in the Dislocation Dynamics of Ni3Al 15'
  
  Speaker: D. Chrzan (University of California - Berkeley)
11:30 - 11:45 Orowan process controlled dislocation glide
- 11:30 Orowan process controlled dislocation glide 15'
  
  Speaker: V. Mohles (University of Münster)
12:00 - 12:15 Diffusion of linear defects on a periodic structure
- 12:00 Diffusion of linear defects on a periodic structure 15'
  
  Speaker: F. Marchesoni (University of Camerino)
12:30 - 13:45 Lunch Break
- 12:30 Lunch Break 1h15'
14:00 - 14:15 Dislocation creep and plasticity of the vortex matter
- 14:00 Dislocation creep and plasticity of the vortex matter 15'
  
  Speaker: V. Vinokur (Arogonne National Laboratory)
14:30 - 14:45 Dislocation patterning and size effects in 2D
- 14:30 Dislocation patterning and size effects in 2D 15'
  
  Speaker: R. Selinger (The Catholic University of America)
15:00 - 15:15 Statistics of vortex velocity fluctuations, theory of turbulence
- 15:00 Statistics of vortex velocity fluctuations, theory of turbulence 15'
  
  Speaker: C. Sire (University Paul Sabatier)
15:30 - 15:45 Coffee Break
- 15:30 Coffee Break 15'
16:00 - 16:45 Brief presentations of Poster Contributions

Location: Main Building, Lobby
- 16:00 Brief presentations of Poster Contributions 45'
17:00 - 17:00 Poster Session
- 17:00 Poster Session

Wednesday, 6 March 2002
- 09:00 - 09:15 Cell structures - a physics approach
  - 09:00 Cell structures - a physics approach 15'
    
    Speaker: J. Sethna (Cornell University)
- 10:15 - 10:30 Disorientation in dislocation structures
  - 10:15 Disorientation in dislocation structures 15'
    
    Speaker: W. Pantleon (Risø National Laboratory)
- 10:30 - 10:45 Coffee Break
  - 10:30 Coffee Break 15'
- 11:00 - 11:15 Statistical properties of dislocation assemblies
  - 11:00 Statistical properties of dislocation assemblies 15'
    
    Speaker: I. Groma (Ëotvos University)
- 11:30 - 11:45 Statistical dislocation dynamics under finite deformations
  - 11:30 Statistical dislocation dynamics under finite deformations 15'
    
    Speaker: A. El-Azab (Pacific Northwest National Laboratory)
- 12:00 - 12:15 Mesoscopic modelling of plastic flow
  - 12:00 Mesoscopic modelling of plastic flow 15'
    
    Speaker: M. Zaiser (The University of Edinburgh)
- 12:30 - 12:45 Lunch Break
  - 12:30 Lunch Break 15'
- 14:00 - 14:15 From dislocation intersections to plastic flow, DDSim
  - 14:00 From dislocation intersections to plastic flow, DDSim 15'
    
    Speaker: B. Devincre (CNRS/ONERA)
- 14:30 - 14:45 Phase Field Methods and Dislocations
  - 14:30 Phase Field Methods and Dislocations 15'
    
    Speaker: A. Finel (CNRS/ONERA)
- 15:00 - 15:15 Stochastic finite elements
  - 15:00 Stochastic finite elements 15'
    
    Speaker: P. Spanos (or TBA)
- 15:30 - 15:45 Coffee Break
  - 15:30 Coffee Break 15'
- 16:00 - 16:15 Plasticity of granular media
  - 16:00 Plasticity of granular media 15'
    
    Speaker: S. Roux (CNRS/St. Gobain)
- 16:30 - 16:45 Plasticity of metallic glasses
  - 16:30 Plasticity of metallic glasses 15'
    
    Speaker: V. Bengus (B. Verkin Inst. for Low Temperature Physics & Engineering)
- 17:00 - 17:15 Controlling plastic flow at the quantum level
  - 17:00 Controlling plastic flow at the quantum level 15'
    
    Speaker: F. Nori (Frontier Research System)
- 17:30 - 17:45 Plasticity of amorphous polymers
  - 17:30 Plasticity of amorphous polymers 15'
    
    Speaker: C. G'sell (UMR/CNRS 7556)
- 18:00 - 18:15 Acoustic emission from the failure of paper
  - 18:00 Acoustic emission from the failure of paper 15'
    
    Speaker: M. Alava (Helsinki University of Technology)
- 20:00 - 20:15 CONFERENCE DINNER
  - 20:00 CONFERENCE DINNER 15'
Thursday, 7 March 2002
- 09:00 - 09:15 Plastic waves in dynamic strain aging alloys
  - 09:00 Plastic waves in dynamic strain aging alloys 15'
    
    Speaker: P. Hähner (Joint Research Centre - Petten)
- 10:00 - 10:15 Stick-slip transition during shear deformation of a polymer melt
  - 10:00 Stick-slip transition during shear deformation of a polymer melt 15'
    
    Speaker: V. Koutsos (The University of Edinburgh)
- 10:30 - 10:45 Coffee Break
  - 10:30 Coffee Break 15'
- 11:00 - 11:15 Portevin-LeChatelier serrations in CuAl and AlMg
  - 11:00 Portevin-LeChatelier serrations in CuAl and AlMg 15'
    
    Speaker: F.B. Klose (Technical University - Braunschweig)
- 11:30 - 11:45 Time series analysis and deterministic structure of PLC
  - 11:30 Time series analysis and deterministic structure of PLC 15'
    
    Speaker: D. Kugiumtzis (Aristotle University of Thessaloniki)
- 12:00 - 12:15 Chaos, SOC and Anderson-like transition in jerky flow
  - 12:00 Chaos, SOC and Anderson-like transition in jerky flow 15'
    
    Speaker: M.S. Bharati (Indian Institute of Science - Bangalore)
- 12:30 - 12:45 Lunch Break
  - 12:30 Lunch Break 15'
- 14:00 - 14:15 Discussion Session
  - 14:00 Discussion Session 15'
- 15:15 - 15:30 Closing Remarks
  - 15:15 Closing Remarks 15'