Topic 1: Laboratory investigations and constitutive modeling The distribution of fluids in natural rock salt to understand deformation mechanisms

2012 ◽  
pp. 17-26
Keyword(s):  
Rock Salt ◽  
Constitutive Modeling ◽  
Deformation Mechanisms ◽  
Natural Rock ◽  
Laboratory Investigations

Constitutive Modeling of Polymer Films From Viscoelasticity to Viscoplasticity

1998 ◽  
Vol 120 (2) ◽  
pp. 145-149 ◽  
Author(s):  
Z. Qian ◽  
M. Lu ◽  
S. Liu
Keyword(s):  
Polymer Films ◽  
Constitutive Modeling ◽  
Evolution Equations ◽  
Small Deformation ◽  
Back Stress ◽  
Deformation Mechanisms ◽  
Master Curves ◽  
Model Predictions ◽  
Polycarbonate Film ◽  
Good Agreement

A unified constitutive model for polymer films is proposed with viscoelastic characterization at small deformation and viscoplastic characterization at large deformation based on molecular chain deformation mechanisms. The evolution equations and the temperature dependence of drag stress and back stress are established from molecular network theories in this paper. The material constants are then determined by master curves and a consistent procedure. A good agreement between the experimental data of polycarbonate film tests and model predictions is achieved.

Hollow Cylinder Tests on Natural Rock Salt

1989 ◽  
Vol 12 (2) ◽  
pp. 157 ◽  
Author(s):  
VP Drnevich ◽  
PE Senseny ◽  
KD Mellegard ◽  
LA Wagner
Keyword(s):  
Hollow Cylinder ◽  
Rock Salt ◽  
Natural Rock

MEASUREMENT OF ATTENUATION LENGTH FOR RADIO WAVE IN NATURAL ROCK SALT SAMPLES CONCERNING ULTRA HIGH ENERGY NEUTRINO DETECTION

2006 ◽  
Vol 21 (supp01) ◽  
pp. 25-29
Author(s):  
MASAMI CHIBA ◽  
YUSUKE WATANABE ◽  
OSAMU YASUDA ◽  
TOSHIO KAMIJO ◽  
YUICHI CHIKASHIGE ◽  
...  
Keyword(s):  
Radio Wave ◽  
Rock Salt ◽  
Large Mass ◽  
High Energy ◽  
Ultra High Energy ◽  
Neutrino Detector ◽  
Attenuation Length ◽  
Huge Number ◽  
Natural Rock ◽  
Detection Medium

Ultra high energy (UHE) neutrinos with the energy larger than 1015 eV, surely arrive at the earth with Greisen, Zatsepin, Kuz'min (GZK) effect, though the rate is very few. The rare call requires us to utilize a large mass (>10 Gton) of detection medium. UHE neutrino generates a huge number of unpaired electrons in rock salt. They would emit sensible radio wave by coherent Cherenkov (Askar'yan) effect. The longer attenuation length of radio wave in rock salt reduces the number of antennas required. Several rock salt samples including synthesized one are measured in attenuation length for radio wave transmission at 0.3 and 1.0 GHz. Some show attenuation length larger than 300 m, which indicate a possibility for constructing a salt neutrino detector.

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