نتایج جستجو برای: shearing properties

تعداد نتایج: 872944  

2009
CHRISTIAN CLASEN H. PIROUZ KAVEHPOUR GARETH H. MCKINLEY

An enhanced version of the flexure-based microgap rheometer (FMR) is described which enables rheological measurements in steady state shearing flows of bulk fluid samples of PDMS with an absolute gap separation between the shearing surfaces of 100 nm – 100 μm. Alignment of the shearing surfaces to a parallelism better then 10 rad allows us to reliably measure shear stresses at shear rates up to...

Journal: :Biomacromolecules 2007
M Pääkkö M Ankerfors H Kosonen A Nykänen S Ahola M Osterberg J Ruokolainen J Laine P T Larsson O Ikkala T Lindström

Toward exploiting the attractive mechanical properties of cellulose I nanoelements, a novel route is demonstrated, which combines enzymatic hydrolysis and mechanical shearing. Previously, an aggressive acid hydrolysis and sonication of cellulose I containing fibers was shown to lead to a network of weakly hydrogen-bonded rodlike cellulose elements typically with a low aspect ratio. On the other...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 1999

2005
Bryan M. Johnson Charles F. Gammie

We consider the nonaxisymmetric linear theory of radially-stratified disks. We work in a shearing-sheet-like approximation, where the vertical structure of the disk is neglected, and develop equations for the evolution of a plane-wave perturbation comoving with the shear flow (a shearing wave, or “shwave”). We calculate a complete solution set for compressive and incompressive short-wavelength ...

Journal: :Chemical communications 2005
C Malla Reddy Srinivas Basavoju Gautam R Desiraju

Mechanical shearing of crystals of a polymorph with a layered structure may be used to separate them from harder crystals of a visually indistinguishable polymorph that resist such shearing.

Journal: :The Astrophysical Journal 2007

Journal: :Journal of Laboratory Automation 2014

Journal: :International Astronomical Union Colloquium 1979

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