Microscale characterization of granular deformation near a crack tip
Abstract
This paper presents a study of microscale plastic deformation at the crack
tip and the effect of microstructure feature on
the local deformation of aluminum specimen during fracture
test. Three-point bending test of aluminum specimen was conducted
inside a scanning electron microscopy (SEM) imaging system.
The crack tip deformation was measured in situ utilizing SEM imaging
capabilities and the digital image correlation (DIC)
full-field deformation measurement technique. The microstructure feature
at the crack tip was examined to understand its effect on
the local deformation fields. Microscale pattern that was suitable
tip and the effect of microstructure feature on
the local deformation of aluminum specimen during fracture
test. Three-point bending test of aluminum specimen was conducted
inside a scanning electron microscopy (SEM) imaging system.
The crack tip deformation was measured in situ utilizing SEM imaging
capabilities and the digital image correlation (DIC)
full-field deformation measurement technique. The microstructure feature
at the crack tip was examined to understand its effect on
the local deformation fields. Microscale pattern that was suitable
Slow-Fast Crack Propagation in Ferroelectric Single Crystals
Dear Colleague,
I have uploaded a video which shows the simulation of Slow-Fast crack propagation in ferroelectric single crystals:
http://www.youtube.com/watch?v=6E7WSVOVAWM
For technical details, please refer to our recently published paper in Acta Materialia:
http://www.sciencedirect.com/science/article/pii/S1359645411001777
Best regards,
Looking for a postdoc position (Thermoelectric material)
I am an engineering doctor of School of Physics in Shandong University, China, graduated in July of 2011. And I have, during the doctor's research period, actively engaged myself in the area of thermoelectric material for 5 years, focusing particularly on the oxide thermoelectric material and module. I keenly desire to obtain a post-doc. Research position in a thermoelectric research group, and further continue the study of thermoelectric.Most of my work has published in peer-viewed journals. So I can do academic writing by myself.
Call for Papers - “International Journal of Fundamental Physical Sciences (IJFPS)” - Next issue Sep. 2011
Dear Researchers, Scholars,
We are very glad to inform you about publishing a new quarterly journal, in Multidisciplinary Sciences and Fundamental Physical Sciences as,
“International Journal of Fundamental Physical Sciences (IJFPS)”
New ICE Journal: Géotechnique Letters
A new journal published by the Institution of Civil Engineers (UK) is available: Géotechnique Letters.
Average time to first peer review decision: 32.5 consecutive days.
First papers are available for free at the ICE Virtual Library: http://www.icevirtuallibrary.com/content/serial/geolett/fasttrack
Have a look!
Graduate assistantship (MS in Engineering System-Mechanical) available in the University of North Texas-Denton
A RA (MS level) position is available in the Department of Engineering Technology, University of North Texas-Denton in the fields of characterization of piezoelectric crystals, design and modeling of piezoelectric resonators and sensors. The position will start from spring, 2012. Candidates should have a Bachelor/Master's degree in engineering mechanics, mechanical engineering or electrical engineering with good academic standing and should have some experiences in the following:
The indentation of pressurized elastic shells: from polymeric capsules to yeast cells - D.Vella, A.Ajdari, A.Vaziri & A.Boudaoud
Pressurized elastic capsules arise at scales ranging from the 10 m diameter pressure vessels used to store propane at oil refineries to the microscopic polymeric capsules that may be used in drug delivery. Nature also makes extensive use of pressurized elastic capsules: plant cells, bacteria and fungi have stiff walls, which are subject to an internal turgor pressure. Here, we present theoretical, numerical and experimental investigations of the indentation of a linearly elastic shell subject to a constant internal pressure.