genepak's picture

Senior Researcher/Post-Doc Position in Solid Mechanics at AICT, Seoul National University, Korea

Applications are invited for the position of senior researcher/postdoctoral fellow in the following areas with special focus on multiscale defect mechanics of electronic materials and devices:


mohsenzaeem's picture

Call for Abstracts in Mini-Symposium on "Computational Modeling of Microstructural Evolution II”- ASME Congress 2014

Dear Colleague,

We would like to invite you to participate in a mini-symposium entitled “Computational Modeling of Microstructural Evolution II” in ASME 2014 International Mechanical Engineering Congress & Exposition (http://www.asmeconferences.org/Congress2014/).
ASME Congress and Exposition will be held in Montreal's downtown convention center, 14-20 November 2014.


siegmund's picture

Post Doc Position


Zhigang Suo's picture

Division of Labor

I have updated my notes on "Energe Release Rate.  Fracture Energy".  I will use my twitter account to update my teaching, research, and reading.  You will get an automatic update if you subscribe to my twitter account.

The qualitative picture of fracture may be well-understood, across disparate scales of length and time, from the distortion of electron clouds, to the jiggling of atoms, to the motion of dislocations, to the extension of the crack, to the load-carrying capacity of a structure.  This statement by itself, however, is of limited value: it offers little help to the engineer trying to prevent fracture of a structure.  Hypes of multiscale computation aside, no reliable method exists today to predict fracture by computation alone.


NEW: Case Studies in Non-Destructive Testing and Evaluation

Now accepting Case Studies! 


Reverse Engineering Ants for Robotics

New research is emerging out of a project where Ohio State University used our software to reconstruct the anatomy of an ant neck. In this project, micro-CT scans of an ant neck were reconstructed using Simpleware software and exported as a mesh for analysis in Abaqus.

Simulations in Abaqus identified where stress concentrations tend to take place for ants' necks, providing insight into how they are able to support large weights. This research has created the potential for developing micro-robots capable of handling similar loads, as well as other ant-inspired designs for space engineering.


Scholarship Boost for UK’s new Structural Integrity Research Centre

TWENTY
full scholarships are available on the 2014 Structural Integrity MSc programme developed
by Brunel University in collaboration with TWI as part of the work of the new National
Structural Integrity Research Centre, (NSIRC).


New Open Access journal: Case Studies in Engineering Failure Analysis

Read over 40 open access articles from Case Studies in Engineering Failure Analysis

Case Studies in Engineering Failure Analysis provides a forum for the rapid publication of short, structured Case Studies in Engineering Failure Analysis and related Short Communications, and will provide an essential compendium of case studies for practitioners in the field of engineering failure analysis and others who are interested in the ways in which components fail.

Read the 40+ articles that are live already!


Heating patterns in English homes: national survey vs common model assumptions

Hightlights of this open access article published in Building and Environment:
• Building stock models need to revise some of their assumptions on space heating.
• Weekends and weekdays are similar in their heating pattern and duration.
• Estimated heating demand temperature is slightly lower than the assumed 21 °C.
• Homes differ widely in their hours of heating and their demand temperature.
• The average temperature during heating periods is about 19.5 °C.


health and safety environmental management

 

Dear all  

i have question that i woud like to know about principle of putting monetary value on human to rduce risk and the principle of weighting the importance of risk , moreover is there any conflic between these principle  

 regards  


Submit an abstract for: Sixth International Conference on Engineering Failure Analysis

Sixth International Conference on Engineering Failure Analysis
6 – 9 July 2014, Lisbon, Portugal

Engineering failure analysis is a key tool for the improvement of the modern innovation cycle now demands that component design involves a whole-of-life approach, incorporating an awareness of manufacture, safety, reliability, environmental sensitivity and disposal. This has focused attention on the pivotal role of failure analysis as an essential tool to improve equipment availability, help prevent accidents and disasters and to inform the processes of design, manufacture, operation and maintenance of key plant and equipment.


faizan.iitm's picture

Crack length measurement

I am trying to measure J - integral from experiment. " Let my initial fatigue crack length is 6mm, then i did single specimen unloading compliance test on it. The crack legth increased to 8mm" If i want to model the same geometry in FEA. Now my doubt is that "what carck length should i take 1) Initial fatigue crack = 6mm 2) final crack length  = 8 mm.................... Note: I need to model my CT specimen in FEA  to correct my experiments :-)


Erik Bitzek's picture

PhD Position in Computational Materials Science / Nanomechanics

The Institute for General Material Properties of the Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) is seeking an outstanding PhD candidate to participate in a research-training group on in-situ microscopy on nanoscale objects.

 


Erik Bitzek's picture

Symposium on Structure, Plasticity and Fracture of Inorganic Glasses in Paris

Dear Colleagues,

we are organizing a symposium on Plasticity and Fracture in Inorganic Amorphous Materials at 

Condensed Matter in Paris 2014

to be held August 23 to 29, 2014. 

Your experimental or theoretical contributions are highly welcome. 
Please don't hesitate to contact us for more information.

The deadline for abstract submission is  April 1st 2014.

Looking forward to seeing you in Paris in August,

Jean-Pierre Guin, Etienne Barhel and Erik Bitzek


Amit Acharya's picture

Scaling theory of continuum dislocation dynamics in three dimensions: Self-organized fractal pattern formation

Y. S. Chen, W. Choi, S. Papanikolaou, M. Bierbaum, J. P. Sethna

 We focus on mesoscopic dislocation patterning via a continuum dislocation
dynamics theory (CDD) in three dimensions (3D). We study three distinct
physically motivated dynamics which consistently lead to fractal formation in
3D with rather similar morphologies, and therefore we suggest that this is a
general feature of the 3D collective behavior of geometrically necessary
dislocation (GND) ensembles. The striking self-similar features are measured in
terms of correlation functions of physical observables, such as the GND
density, the plastic distortion, and the crystalline orientation. Remarkably,
all these correlation functions exhibit spatial power-law behaviors, sharing a
single underlying universal critical exponent for each type of dynamics

Article in Intl. Journal of Plasticity

Article at arxiv.org


Kamyar M Davoudi's picture

Eighty Years of Dislocation Theory and Work Hardening

On February 7, 1934, two consecutive papers by Sir Geoffrey Ingram Taylor were received and so the dislocation theory was born and the first attempt at describing work hardening was made. Before that date, it was known that there was a big gap between the ideal and the experimentally observed shear strength. While according to the calculations, the shear strength had to be of the order of one tenth (or with finer models one thirtieth) of the shear modulus, the measured shear strength was several orders of magnitude smaller. This large discrepancy brought about Geoffrey I.Taylor, Egon Orowan and Michael Polyani to independently postulate the existence of dislocations. Papers by Orowan and Polyani were published consecutively in one volume of Zeitschrift für Physik.


Jizhou Song's picture

Caltech: secrets of the world’s number one university

Good International news on Caltech and engineering. Ares Rosakis, chair of the Division of Engineering and Applied Science,describes Caltech as “a unique species among universities…a very interesting phenomenon”.More can be found in the attachment or at the link below

http://www.timeshighereducation.co.uk/features/caltech-secrets-of-the-wo...


Rongmei niu's picture

instability induced by incoherent twin boundary in nanotwinned copper

1. Strain hardening and softening in nanotwinned Cu:

Nanotwinned Cu foils with about 99% coherent twin boundaries (TBs) among all the boundaries were made. These coherent

TBs, with an average spacing of 25 nm, were engineered approximately parallel to foil surfaces. Low plane-strain deformation

enhances the hardness by refining microstructure and introducing dislocations. High plane-strain deformation results in crystallographic

lattice rotation and reaction between dislocations and coherent TBs, and induces incoherent TBs, thus twin coarsening and

even diminishing of nanotwins accompanied by recovery and recrystallization, which cause softening.


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