Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)


Tags: Atomistic, Characterization, characterization definition, characterization definition literary term, characterization direct and indirect, characterization definition literature, characterization dynamic, characterization definition in literature, characterization definition and examples, characterization dictionary, characterization definition for kids, characterization death of a salesman, characterization facility, characterization direct indirect, characterization define, direct characterization definition, Dislocation, Nucleation, Fracture,
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Atomistic Characterization of Dislocation Nucleation and Fracture
#1

One of the central objectives of multiscale materials modeling is to develop and apply simulation techniques to uncover atomic-level mechanisms without the significant limitations on system size and simulation time inherent to purely atomistic methods. In this context, I have made two contributions. I developed an interatomic potential finite element method (IPFEM) to study homogeneous dislocation nucleation by nano-indentation. The implementation of IPFEM facilitates simulations at length scales that are large compared to atomic dimensions, while remaining faithful to the nonlinear interatomic interactions. Aided by a shear localization criterion, which was also calculated from the interatomic potential, I was able to provide atomically accurate predictions about when, where and how a dislocation nucleates beneath a nanoindenter. My second contribution was to extend the time-scale of atomistic simulation of fracture by adopting several reaction pathway sampling schemes. I studied the thermally activated processes at a crack tip that control the brittle to ductile transitions in solids. Using the sampling scheme of the nudged elastic band method, atomistic pathways were identified that characterize dislocation loop emission in Cu, cleavage crack extension in Si, and water-assisted bond ruptures in a silica nanorod. The associated energetics and atomistic geometries were quantified, thus making contact with previous continuum analyses and experimental observations.
Reply

Marked Categories : project topic on dislocation, atomistic characterization of dislocation nucleation and fracture,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  Ultrasonic NDE and Characterization of Aerospace Materials Computer Science Clay 1 13,712,425 29-08-2017, 01:13 PM
Last Post: jaseela123
  Experimental Characterization and Numerical Modeling of a Float Glass Furnace Computer Science Clay 0 11,314,045 25-08-2017, 09:32 PM
Last Post: Computer Science Clay
  Ductile Mixed-mode Fracture Criterion Development and Crack Growth Simulations Computer Science Clay 0 7,027,533 25-08-2017, 09:32 PM
Last Post: Computer Science Clay
  Modeling and Nonlinear analysis of Chemical and Biological Reactor-Separator systems computer science crazy 0 11,566,773 25-08-2017, 09:32 PM
Last Post: computer science crazy
  Atomistic Characterization of Dislocation Nucleation and Fracture mechanical wiki 0 11,041,466 25-08-2017, 09:32 PM
Last Post: mechanical wiki
  Topographic Characterization and Modeling of the Precision Surface Grinding Process Computer Science Clay 0 12,133,437 25-08-2017, 09:32 PM
Last Post: Computer Science Clay
Thumbs Up Design and Analysis of Rocket Nozzle-Full Report and Presentation mechieprojects 3 474 09-07-2016, 12:47 PM
Last Post: dhanabhagya
  Types and Functions of Jigs and Fixtures project uploader 1 9,068 07-04-2016, 09:59 AM
Last Post: mkaasees
  DEVELOPMENT AND ANALYSIS OF PEDAL POWERED AND VACUUM ZEOLITE REFRIGERATION SYSTEM seminar projects maker 1 1,707 11-01-2015, 01:08 PM
Last Post: Tejashri Padman
  DESIGN AND RATING SHELL AND TUBE HEAT EXCHANGERS pdf seminar projects maker 0 312 14-05-2014, 12:12 PM
Last Post: seminar projects maker
This Page May Contain What is Atomistic Characterization of Dislocation Nucleation and Fracture And Latest Information/News About Atomistic Characterization of Dislocation Nucleation and Fracture,If Not ...Use Search to get more info about Atomistic Characterization of Dislocation Nucleation and Fracture Or Ask Here

Options: