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Faculty Positions at the University of North Texas

Submitted by Sandra Boetcher on

The Department of Mechanical and Energy Engineering invites applications for a tenure-track faculty member at the rank of assistant professor, associate professor, or full professor preferably in the areas of controls, solid mechanics/design.  Applications will be reviewed until the search is filled. For complete qualifications and applications information see http://www.mee.unt.edu. AA/EOE/ADA

Growth kinetics of precipitates: misfitting and non-misfitting

Submitted by Mogadalai Gururajan on

Quantitative studies on diffusional growth of an isolated
precipitate in a supersaturated matrix date back to the classic work of
C Zener (1949) and F C Frank
(1950); while Zener-Frank (ZF) theory is for precipitates that are
non-misfitting, misfitting precipitates have been studied by Laraia,
Johnson and Voorhees (1988) (hereafter, LJV). Both ZF and LJV are sharp
interface models (and are mostly analytical); further, the assumptions
made in these theories make it difficult to verify their results by

Experimental temperature field at the crack tip in a natural rubber

Submitted by LECAM on

Dear colleagues, this is a paper on the experimental determination of temperature field at the crack tip in a natural rubber using a motion compensation technique. The contribution of the non-uniformity of the IR detectors and the Narcissus effect is taking into account to determine the temperature field.

JB LE CAM

Cyclic volume changes in rubber

Submitted by LECAM on

This is a study dealing with the volume variation in filled crystallizable natural (F-NR) and uncrystallizable styrene butadiene (F-SBR) rubbers subjected to cyclic loadings. During their deformation, such materials exhibit volume variation induced by the cavitation phenomenon and the decohesion between particles and the rubber matrix.

Volume variation in filled and unfilled natural rubber : competition between cavitation and stress-induced crystallization

Submitted by LECAM on

this is a study on the competition between cavitation and stress-induced crystallization during the deformation of cis-1,4 polyisoprene rubber. During deformation, this kind of material exhibits volume variation induced by both phenomena. In this study, we propose to measure this volume variation by an original full-field measurement technique. The high resolution of this technique allows us to identify characteristic stretch ratios during mechanical cycles.

advice to understand the Gurson Model

Submitted by jingzheng on

Recently, I am studying on the Gurson Model, but it is a little bit hard for me to understand most part in the paper 'Continuum Theory of Ductile Rupture by Void Nucleation and Growth', I don't know about the spirit of deduction of formulas and some keywords make me confused, like 'convexity'and 'normality','loci',many....

It may be helpful if someone who is highly understand better about Gurson can introduce me some references maybe basic or middle hard, Thanks!