scholarly journals On the forward simulation and cost functions for the ultrasonic material characterization of polymers

PAMM ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Dominik Itner ◽  
Hauke Gravenkamp ◽  
Dmitrij Dreiling ◽  
Nadine Feldmann ◽  
Bernd Henning ◽  
...  
Keyword(s):  
Material Characterization ◽  
Cost Functions ◽  
Forward Simulation

scholarly journals Correlation of Global Quantities at Material Characterization of Pressure-Sensitive Materials Using Sharp Indentation Testing

Lubricants ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 29
Author(s):  
Carl F. O. Dahlberg ◽  
Jonas Faleskog ◽  
Per-Lennart Larsson
Keyword(s):  
Finite Element ◽  
Material Characterization ◽  
Pressure Sensitivity ◽  
Pressure Sensitive ◽  
The Mean ◽  
Sharp Indentation ◽  
Von Mises ◽  
Von Mises Plasticity ◽  
Hardness Values

Correlation of sharp indentation problems is examined theoretically and numerically. The analysis focuses on elastic-plastic pressure-sensitive materials and especially the case when the local plastic zone is so large that elastic effects on the mean contact pressure will be small or negligible as is the case for engineering metals and alloys. The results from the theoretical analysis indicate that the effect from pressure-sensitivity and plastic strain-hardening are separable at correlation of hardness values. This is confirmed using finite element methods and closed-form formulas are presented representing a pressure-sensitive counterpart to the Tabor formula at von Mises plasticity. The situation for the relative contact area is more complicated as also discussed.

Mechanical material characterization of photosensitive polymers

2013 ◽  
Vol 20 (10-11) ◽  
pp. 1975-1979 ◽  
Author(s):  
J. Vogel ◽  
H.-J. Feige ◽  
J. Saupe ◽  
S. Schubert ◽  
J. Grimm
Keyword(s):  
Material Characterization ◽  
Photosensitive Polymers

Synthesis and material characterization of amorphous and crystalline (α-) Al2O3via aerosol assisted chemical vapour deposition

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 102956-102960 ◽  
Author(s):  
Sapna D. Ponja ◽  
Ivan P. Parkin ◽  
Claire J. Carmalt
Keyword(s):  
Chemical Vapour Deposition ◽  
Material Characterization ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Facile Synthesis ◽  
Quartz Substrates

The facile synthesis of Al2O3 in the amorphous and corundum phase on glass and quartz substrates, respectively, is reported.

Incompressibility and mesh sensitivity analysis in finite element simulation of rubbers

2016 ◽  
Vol 7 (1) ◽  
pp. 7-12 ◽  
Author(s):  
D. Huri
Keyword(s):  
Finite Element ◽  
Material Characterization ◽  
Numerical Stability ◽  
Material Parameters ◽  
Linear Finite Element ◽  
Element Simulation ◽  
Finite Element Calculations ◽  
Mesh Density ◽  
Rubber Component

Non-linear finite element calculations are indispensable when important information of the material response under load of a rubber component is desired. Although the material characterization of a rubber component is a demanding engineering task, the changing contact range between the parts and the incompressibility behaviour of the rubber further increase the complexity of the investigations. In this paper the effects of the choice of the numerical material parameters (e.g. bulk modulus) are examined with regard to numerical stability, mesh density and calculation accuracy. As an example, a rubber spring is chosen where contact problem is also handled.

Neutron Activation Analysis and Material Characterization of Modern Urban Materials

2020 ◽  
Author(s):  
D. Ospina ◽  
J. Baciak ◽  
J. Nino ◽  
J. Nimmagadda ◽  
M. Benjamin ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Material Characterization
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