Forensics: residual stress of fractured part
I’ll present this below without the answer, in case you want to enjoy a little brain teaser. It is a solid and experimental mechanics problem that, while not terribly practical, I found very interesting:
A part fractures cleanly in two by brittle fracture (no plasticity) under the action of residual and applied stresses. You only have the broken part in front of you, no prior information.
What were the original residual stresses on the fracture plane?
2nd International Conference on BioTribology (ICoBT2014) - Preliminary Programme Available
The ICoBT2014 preliminary programme is now available on the conference website. If you register by the 7 March early booking deadline, you will save on the standard rate.
For more information and to register, please visit www.biotribologyconference.com.
Competition for a post-doc position on computational mechanics now open at IMT Lucca
Dear Colleague,
this is to inform you that the research unit MUSAM "Multi-scale Analysis of Materials" (http://musam.imtlucca.it) at the IMT Institute for Advanced Studies Lucca (Italy) has opened 1 Post-doctoral Fellow position (1 year but renewable for a maximum of 3 years in total) on Computational mechanics applied to solar energy materials, related to the ERC Starting Grant CA2PVM
(http://musam.imtlucca.it/CA2PVM.html) and under my supervision.
Split Hopkinson Compression Test data analysis
Forums
I have performed some high strain rate split hopkinson
compression tests. The oscilloscope reads the incident and reflected
displacments (in input pressure bar) and transmitted displacment (in output
pressure bar) in volt. To convert displacement in volt (output voltage) to
mechanical strain (m/m), I have a difficalty. What is the relationship between
the output voltage (volt) (the reading from oscilloscope), excitation voltage (volt)
and strain gauge Gauge Factor (GF)?
Normal
0
false
false
false
EN-US
X-NONE
X-NONE
Post-doctoral position (computational mechanics) at Rice University
Post-doctoral position available in computational mechanics at Rice University. The announcement and instructions to apply are posted at
Mechanics journal impact factors 2012
Some funding agencies require that articles be published only in journals with impact factors greater than 1. Here's a list from 2012 that tells you which to choose (if you care about impact factors).
-- Biswajit
Announcing Wear of Materials 2015 - Website has just gone live
20th International Conference on Wear of Materials
12-16 April 2015
The Sheraton Centre, Toronto, Canada
The 20th International Conference on Wear of Materials will focus on both the fundamental and applied aspects of wear and friction of materials at the macro-, micro-, and nano-scale. It will address the understanding of tribological phenomena; particularly the progress in recent decades and a special session will concentrate on modeling of wear.
Paper: On finding cohesive law parameters for foam-metal interfaces
A detailed report of our work on trying to find cohesive laws for interfacial fracture is attached. I will add the experimental data after a shorter version of this report has been published.
The reason for posting this report on iMechanica is so that people who want to replicate the tests or perform similar tests know what is involved. As we have found out, many details and potential problems faced by an experimentalist are hard to determine from the concise papers that are typically published as journal articles.