Linear viscoelastic analysis of formation and relaxation of azobenzene polymer gratings

2004 ◽  
Vol 120 (8) ◽  
pp. 4039-4045 ◽  
Author(s):  
Marina Saphiannikova ◽  
Thomas M. Geue ◽  
Oliver Henneberg ◽  
Knut Morawetz ◽  
Ullrich Pietsch
Keyword(s):  
Viscoelastic Analysis ◽  
Azobenzene Polymer ◽  
Linear Viscoelastic ◽  
Polymer Gratings

Analysis of Internal Friction Peaks in High Purity Molybdenum by a Viscoelastic Procedure Independent of the Relaxation Strength

2008 ◽  
Vol 137 ◽  
pp. 49-58
Author(s):  
C.L. Matteo ◽  
O.A. Lambri ◽  
G.I. Zelada-Lambri ◽  
P.A. Sorichetti ◽  
Jose Angel García
Keyword(s):  
Internal Friction ◽  
High Purity ◽  
The Other ◽  
Relaxation Processes ◽  
Relaxation Strength ◽  
Viscoelastic Analysis ◽  
Linear Viscoelastic ◽  
Damping Peak ◽  
And Diffusion ◽  
Diffusion Of Vacancies

In this work we present a novel procedure, involving linear viscoelastic analysis, to discriminate the two possible contributions of the observed damping peak which appears around 840 K – 1050 K in mechanically deformed high purity single-crystalline molybdenum. An interesting feature of the procedure is that, for low damping samples, it can efficiently resolve experimental peaks that result from the superposition of different processes independently of the ratio between their relaxation strengths. This allows us to confirm that two different relaxation processes appear in molybdenum in the temperature range about 0.3 Tm, one around 840 K, and the other one near 1050 K. These can be related to diffusion and to a coupled mechanism involving creation and diffusion of vacancies, respectively.

scholarly journals Linear viscoelastic analysis of a semi-infinite porous medium

2008 ◽  
Vol 45 (5) ◽  
pp. 1458-1482 ◽  
Author(s):  
A.V. Pyatigorets ◽  
S.G. Mogilevskaya ◽  
M.O. Marasteanu
Keyword(s):  
Porous Medium ◽  
Viscoelastic Analysis ◽  
Linear Viscoelastic

Viscoelastic Analysis of Adhesive Bonded Lap Joints Between Tubes Under Torsion

1988 ◽  
Vol 110 (3) ◽  
pp. 384-388 ◽  
Author(s):  
Gianluca Medri
Keyword(s):  
Shear Stress ◽  
Steady State ◽  
Structural Analysis ◽  
Viscoelastic Model ◽  
Adhesive Layer ◽  
Lap Joints ◽  
Viscoelastic Analysis ◽  
Linear Viscoelastic ◽  
Analytical Relations ◽  
Linear Viscoelastic Model

In this paper a structural analysis of cemented lap joints between tubes under torsion is presented. The behavior of the joints has been evaluated using a linear viscoelastic model of the adhesive layer and for both steady state and general loading conditions. Analytical relations for the shear stress in the adhesive layer for the torsional compliance of the joints are proposed.

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