About Us

Dominion is one of the nation's largest producers and transporters of energy, with a portfolio of approximately 27,500 megawatts of electric generation, 11,000 miles of natural gas transmission, gathering and storage pipeline and 63,200 miles of electric transmission and distribution lines. The company operates one of the largest natural gas storage systems in the U.S. with 947 billion cubic feet of capacity, and serves nearly 6 million utility and retail energy customers in 10 states.

Following an earlier post on dynamic necking of tensile bars, we show in the attached paper (to appear in JMPS) that the presence of deep notches in the specimen does not necessarily dictate the location of the neck. Various material parameters are identified and modeled numerically, to assess their respective influence. Strain-rate sensitivity is identified as an important factor.

It is commonly admitted that "rough" surfaces promote osseo-integration of dental implants. Numerous studies emphasize an optimal Ra parameter for this purpose. One very common way to achieve that state is the so-called "grit blasting" process whereby tiny ceramic (alumina) particles are shot on the implant's surface.

Up to here for the basic story.

It has also been noted in other instances that surface blasting may not be entirely beneficial and it should be controlled, in terms of blasting pressure, particle size and shape. 

I would like to bring to your attention the mini-symposium entitled "Mechanical Properties of Randomly Cross-Linked Semiflexible Fibrous Materials”,  http://13.usnccm.org/MS1011

It is our pleasure to invite you to submit an abstract to the symposium on

Mechanics of Hydraulic Fracturing (fracking)

as part of Track 12 of IMECE 2015, Houston, Texas, November 13-19, 2015. See attached for more details.

The abstract submission deadline is March 2nd, 2015 (final deadline, no extension).

Organizers:

Rashid K. Abu Al-Rub, Masdar Institute, Abu Dhabi, UAE

K. Ravi-Chandar, University of Texas-Austin

Chad M. Landis, University of Texas-Austin

Ali Ghahremaninizhad, University of Miami

Dear IMECE Attendees:

The Applied Mechanics Executive Committee (AMD-EC) is pleased to announce the 2015 IMECE student travel award and best paper competition.

In the context of metal plasticity, the yield function of a metal polycrystal is its most complex macro-characteristic. Letting aside the questions of kinematic or distortional hardening, the basic problem is geometric in nature: to design a family of convex surfaces capable of reproducing a wide range of experimental, or theoretically predicted data. While many satisfactory solutions have been proposed for the modeling of symmetric (with respect to the origin of the stress space) yield functions, the more general case of asymmetric functions has not witnessed comparable progress.