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Surface preparation of dental implants

Submitted by D.Rittel on

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. 

Dental implants can fail......

Submitted by D.Rittel on

Contrary to the common naive feeling of clinical dentists, it so happens that dental implants can also fracture. This is a very unpleasant event which necessitates a surgical extraction procedure. So far, the most part of reserach on dental implants has been emphasizing biological failures and biocompatibility related issues. Mechanical aspects of implant design have been touched upon and a lot of work has been done on the surface condition of the implants to allow optimal osseo-integration. Those are all central clinical issues.

Abaqus tools

Submitted by Sri Nikhil on
research
abaqus 6.10

<p>Hi all</p>
<p>im modeling an laminated rubber isolator in abaqus and i have used mooney rivlin model.My model consists of three layers of rubber and steel plates in between.&nbsp; I dont know how to view the results for seperate parts of rubber and also how to adjust the contour plot valuees. kindly help me with it. thanks in advance.<a href="http://imechanica.org/comment/26854#comment-26854"><br /></a></p>

Experiments with porous materials

Submitted by D.Rittel on

The additive manufacturing technology, among its many advantages, allows us to manufacture solids with controlled enclosed porosity. To the best of my knowledge, this was not doable with conventional machining technologies, but now this is done. In the attached document, the interested reader will find experimental results (both static and dynamic) describing the influence of the porosity on the specimen's performance. We show that while the volume fraction is indeed an important parameter, aas expected, the spatial arrangement of the voids is also of prime importance.

Running user subroutines in Fortran 90 with ABAQUS

Submitted by Hanif Hoseini on

Hi,

I need to run a UEL in Fortran90 with ABAQUS 6.13, however, I keep getting error. 

I can run subroutines in FORTRAN77, but it's not the case for Fortran90.

My machine is Windows7/64 and I have Intle Composer XE 2011 and Microsoft Visual Studio 2010.

Any help on that would be greatly appreciated.

Thanks,

Hanif

IMECE 2015 Symposium on “Mechanics of Hydraulic Fracturing (fracking)”

Submitted by Rashid K. Abu Al-Rub on
conference

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

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