Results 251 to 260 of about 5,097,379 (301)

Stretched polymer surfaces: Atomic force microscopy measurement of the surface deformation and surface elastic properties of stretched polyethylene

Journal of Polymer Science Part B: Polymer Physics, 2001
AbstractThe surface structure and surface mechanical properties of low‐ and high‐density polyethylene were characterized by atomic force microscopy (AFM) as the polymers were stretched. The surfaces of both materials roughened as they were stretched. The roughening effect is attributed to deformation of nodular structures, related to bulk spherulites ...
A. Opdahl, G. A. Somorjai
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Stretching a Surface in a Rotating Power‐Law Fluid

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1995
The authors consider the steady flow of an incompressible power-law fluid past a horizontal stretching plate that rotates around a vertical axis. The equations are formulated for the velocity and the stress tensor. Assuming the boundary layer approximation from [the authors, Z. Angew. Math. Mech. 75, No.
Gorla, R. S. R., Dakappagari, V., Pop, I.   +2 more
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Stretched-exponential relaxation at a self-similiar surface

Physical Review A, 1991
The double-layer impedance at a rough electrode can be related to properties of random walks near the surface of that electrode. We apply this method to the calculation of the double-layer impedance at a self-similar electrode in two dimensions. We find that the impedance at a self-similar surface shows stretched-exponential behavior.
, Halsey, , Leibig
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Thermocapillarity in a liquid film on an unsteady stretching surface

International Journal of Heat and Mass Transfer, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dandapat, Bhabani S., Santra, Bidyut, Andersson, Helge I.   +2 more
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Altered surface character of stretched condom latex

Contraception, 1992
A new type of imperfection in condom latex, present during moderate stretching, was observed by low magnification scanning electron microscopy. The normally smooth surface of relaxed natural latex was transformed into an accordion-like arrangement of ripples in addition to tears.
G D, Jay, E, Drummond, B, Lane
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Stretching a surface in a rotating fluid

ZAMP Zeitschrift f�r angewandte Mathematik und Physik, 1988
A surface is stretched in a rotating fluid. The solution to the governing set of nonlinear differential equations depends on a parameter \(\lambda\) which is the ratio of the rotation rate to the stretching rate. Perturbation solutions for small and large \(\lambda\) compare well with exact numerical integration.
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Turbulent stretching of line and surface elements

Journal of Fluid Mechanics, 1990
Material line and surface elements transported in a turbulent velocity field increase in length or area at an exponential rate. In this paper we investigate how the stretching rates are related to the statistical properties of the velocity field both analytically and numerically in simple models of turbulence. In a Gaussian model the statistics exhibit
Drummond, I. T., Münch, W.
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Stretching a Curved Surface in a Viscous Fluid

Chinese Physics Letters, 2010
This work is concerned with the viscous flow due to a curved stretching sheet. The similarity solution of the problem is obtained numerically by a shooting method using the Runge–Kutta algorithm. The physical quantities of interest like the fluid velocity and skin friction coefficient are obtained and discussed under the influence of dimensionless ...
M Sajid, N Ali, T Javed, Z Abbas
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Stretching surface in rotating viscoelastic fluid

Applied Mathematics and Mechanics, 2013
The boundary layer flow over a stretching surface in a rotating viscoelastic fluid is considered. By applying a similarity transformation, the governing partial differential equations are converted into a system of nonlinear ordinary differential equations before being solved numerically by the Keller-box method.
K. Zaimi, A. Ishak, I. Pop
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NOTE ON STRETCHING OF LINE AND SURFACE ELEMENTS IN ISOTROPIC TURBULENCE

SIAM Journal on Applied Mathematics, 1973
Certain inequalities are rigorously established connecting the statistical stretching of line and surface elements with the statistical dilatation of volume in a compressible fluid in isotropic turbulent motion. The method of approach differs only slightly from those used by Cocke (1969) and by Orszag (1970) for the incompressible case, the only novel ...
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