When a bi-material sample for the characterization of interfacial fracture toughness is manufactured, the sample is not usually stress-free at room temperature. If an interface between a metallic substrate and a polymeric adhesive is considered, there are essentially two sources of residual stresses for a dry sample at room temperature:

1-    The mismatch between the Coefficient of Thermal Expansion (CTE) of adhesive and substrate induces a concave or convex warpage, depending on the CTE values of the two materials.

Hi, how the Peach-Koelher force acts on a dislocation?, I understand when the resolved shear stress acts on a dislocation. But not quite the term that provokes  climb on an edge dislocation...

does anyone know any current theories on the stress wave propagation in a  complex media(such as concrete or rock).(1D sphere wave or complex)

all i see is the simulation with a complex constitutive model. but i think it`s not perfect. 

hope for your help

Mar 05, 2009 

This position has been filled. Thanks for reading and applying.

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Composite Vehicle Research Center (CVRC) at MSU has an immediate opening for a postdoctoral research associate to conduct research in non-destructive evaluation (NDE) and structural health monitoring (SHM) of composite materials in an effort to develop self-diagnostic composite structures for air and ground vehicles. 

http://www.egr.msu.edu/~shong/Postdoc.html

Many of you developed Finite Element codes. These codes are usually quite complex. So you all know the importance of testing your results to see if what you programmed makes sense. The usual approach is to compare your FEM program with somethig already published. With this in mind, I designed a series of "lectures" on the topic of elasticity solutions for plates. You can find the details in 

http://attila.sdsu.edu/~demasi/list_lectures.htm

Evelyn L. Hu, a pioneer in the fabrication of nanoscale electronic and photonic devices, has been named Gordon McKay Professor of Applied Physics and Electrical Engineering in Harvard University’s School of Engineering and Applied Sciences (SEAS), effective Jan. 1, 2009.  Read more

The W.M. Keck Institute for Space Studies at the California Institute of Technology announces an opportunity for highly qualified individuals to apply for postdoctoral fellowships to conduct research in space science and engineering. Please see http://www.kiss.caltech.edu for additional information.