Determination of residual stresses by ESPI-HD method
We have an equipment and technology for determination of residual stresses. They are based on the hole-drilling method and electron speckle
interferometry (ESPI-HD method).
Blog posts
"Indo-Danish International Conference on Wind Energy: Materials, Engineering and Policies (WEMEP2012)"
The deadline for abstract submission is extended to 16th August 2012. The title of the international conference is "Indo-Danish International Conference on Wind Energy: Materials, Engineering and Policies (WEMEP2012)". The Conference will be held only two days i.e. 22nd - 23rd November 2012 at BITS-Pilani, Hyderabad Campus, Jawahar Nagar, R.R. Dist, Hyderabad – India.
Postdoc Position in Advanced Materials Lab, Northwestern University
A postdoctoral position is available immediately in Brinson’s Advanced Materials Lab involving collaborative work on finite element modeling of nanostructured polymer composites. The majority of the work will be split across two projects on the subject. The first project involves 3D modeling of filled elastomers, with a focus on the viscoelastic properties. Non-linear viscoelastic modeling experience is a plus, but not required.
CISM SUMMER COURSE in Italy: Materiomics: Multiscale Mechanics of Biological Materials and Structures
June 4, 2012 — June 8, 2012 (Udine, Italy @ CISM)
Subra Suresh elected to the National Academy of Sciences
Dr. Subra Suresh, material scientist and the Director of the National Science Foundation, is elected to the US National Academy of Sciences. He is iMechanica user 190. Congratulations!
Journal Club Theme of May 2012: Hierarchical and Quasiperiodic Phononic Crystals and Metamaterials
Following last month’s blog by Mahmoud on the role of structure in the design of materials capable of controlling the propagation of mechanical waves, I would like to delve into the characteristics of the structure itself. The propagation of mechanical waves can be controlled via scattering induced by a material’s structure.The propagation of waves for example is significantly disturbed when their wavelength and direction become correlated with the medium’s structure.
Conditionning
Convergence of Numerical solution may depend on the conditionning of the problem's matrices.
An ill-conditionned matrix produce singulariy cases. This is due to bad shaped elements in
structural mechanics: nearly degenerated elements with zero area (in 2D) or zero volume (in 3D)
The conditionning can be analyzed by numerical algorithms or existing commands in order to
detect these problems.
Complementary numerals
Sometimes a change of notation can advance thought. In today's blog the tradition of numerals 6,7,8, and 9 will be challenged.
Suppose the five letters a, b, c, d, and e are used to represent numbers satisfying
a + 1 = 0, b + 2 = 0, c + 3 = 0, d + 4 = 0, e + 5 = 0.
