High strain extensional rheometry of polymer melts: Revisiting and improving the Meissner design

2014 ◽  
Vol 58 (4) ◽  
pp. 869-890 ◽  
Author(s):  
R. J. Andrade ◽  
P. Harris ◽  
J. M. Maia
Keyword(s):  
Polymer Melts ◽  
High Strain ◽  
Extensional Rheometry

Addendum: Rotary Clamp in Uniaxial and Biaxial Extensional Rheometry of Polymer Melts [J. Rheol., 25 1 (1981)]

1981 ◽  
Vol 25 (6) ◽  
pp. 673-674 ◽  
Author(s):  
J. Meissner ◽  
T. Raible ◽  
S. E. Stephenson
Keyword(s):  
Polymer Melts ◽  
Extensional Rheometry

Rotary Clamp in Uniaxial and Biaxial Extensional Rheometry of Polymer Melts

1981 ◽  
Vol 25 (1) ◽  
pp. 1-28 ◽  
Author(s):  
J. Meissner ◽  
T. Raible ◽  
S. E. Stephenson
Keyword(s):  
Polymer Melts ◽  
Extensional Rheometry

High Strain Rate Rheology of Polymer Melts

2009 ◽  
Author(s):  
Adrian Kelly ◽  
Tim Gough ◽  
Ben Whiteside ◽  
Phil D. Coates ◽  
Martin Zatloukal
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Polymer Melts ◽  
High Strain

High Strain Rate Rheometry of Polymer Melts Using an Instrumented Injection Molding Machine

2008 ◽  
Author(s):  
Adrian Kelly ◽  
Tim Gough ◽  
Phil Coates ◽  
Albert Co ◽  
Gary L. Leal ◽  
...  
Keyword(s):  
Injection Molding ◽  
High Strain Rate ◽  
Strain Rate ◽  
Polymer Melts ◽  
High Strain ◽  
Molding Machine ◽  
Injection Molding Machine

Horizontal extensional rheometry (HER) for low viscosity polymer melts

2020 ◽  
Vol 64 (1) ◽  
pp. 177-190
Author(s):  
Benke Li ◽  
Wei Yu ◽  
Xiao Cao ◽  
Quan Chen
Keyword(s):  
Polymer Melts ◽  
Low Viscosity ◽  
Extensional Rheometry ◽  
Viscosity Polymer

scholarly journals Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts

2011 ◽  
Vol 55 (4) ◽  
pp. 875-900 ◽  
Author(s):  
D. Auhl ◽  
D. M. Hoyle ◽  
D. Hassell ◽  
T. D. Lord ◽  
O. G. Harlen ◽  
...  
Keyword(s):  
Steady State ◽  
Polymer Melts ◽  
Branched Polymer ◽  
Extensional Rheometry ◽  
Long Chain

Solid Solution Effects and Deformation Micros trueture of Shock-Loaded Iron Manganese Alloys

1970 ◽  
Vol 28 ◽  
pp. 420-421
Author(s):  
A. Christou ◽  
J. V. Foltz ◽  
N. Brown
Keyword(s):  
Solid Solution ◽  
Shock Loading ◽  
High Strain ◽  
Local Stress ◽  
Strain Rates ◽  
Local Stress Concentration ◽  
Bcc Metals ◽  
Manganese Alloys ◽  
Iron Manganese ◽  
Transmission Microscope

In general, all BCC transition metals have been observed to twin under appropriate conditions. At the present time various experimental reports of solid solution effects on BCC metals have been made. Indications are that solid solution effects are important in the formation of twins. The formation of twins in metals and alloys may be explained in terms of dislocation mechanisms. It has been suggested that twins are nucleated by the achievement of local stress-concentration of the order of 15 to 45 times the applied stress. Prietner and Leslie have found that twins in BCC metals are nucleated at intersections of (110) and (112) or (112) and (112) type of planes.In this paper, observations are reported of a transmission microscope study of the iron manganese series under conditions in which twins both were and were not formed. High strain rates produced by shock loading provided the appropriate deformation conditions. The workhardening mechanisms of one alloy (Fe - 7.37 wt% Mn) were studied in detail.

Plastic Deformation in Microtomed Sections

1971 ◽  
Vol 29 ◽  
pp. 458-459
Author(s):  
J. Temple Black
Keyword(s):  
Plastic Deformation ◽  
Plastic Strain ◽  
Applied Stress ◽  
Elastic Strain ◽  
High Strain ◽  
Tool Material ◽  
Cutting Edge ◽  
Material Structure ◽  
Geometrical Constraints

The output of the ultramicrotomy process with its high strain levels is dependent upon the input, ie., the nature of the material being machined. Apart from the geometrical constraints offered by the rake and clearance faces of the tool, each material is free to deform in whatever manner necessary to satisfy its material structure and interatomic constraints. Noncrystalline materials appear to survive the process undamaged when observed in the TEM. As has been demonstrated however microtomed plastics do in fact suffer damage to the top and bottom surfaces of the section regardless of the sharpness of the cutting edge or the tool material. The energy required to seperate the section from the block is not easily propogated through the section because the material is amorphous in nature and has no preferred crystalline planes upon which defects can move large distances to relieve the applied stress. Thus, the cutting stresses are supported elastically in the internal or bulk and plastically in the surfaces. The elastic strain can be recovered while the plastic strain is not reversible and will remain in the section after cutting is complete.

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