Tracer Transport in a Soil Column for Sine Wave Loading

2015 ◽  
pp. 169-188
Author(s):  
Donald Dean Adrian ◽  
Senda Ozkan ◽  
Akram N. Aishawabkeh
Keyword(s):  
Soil Column ◽  
Sine Wave ◽  
Wave Loading ◽  
Tracer Transport

Strain Rate and Loading Waveform Effects on an Energy-Based Fatigue Life Prediction for AL6061-T6

2012 ◽  
Author(s):  
Todd Letcher ◽  
M.-H. Herman Shen ◽  
Onome Scott-Emuakpor ◽  
Tommy George ◽  
Charles Cross
Keyword(s):  
Fatigue Life ◽  
Strain Rate ◽  
Constant Strain Rate ◽  
Hysteresis Loops ◽  
Sine Wave ◽  
Wave Loading ◽  
Cumulative Energy ◽  
Loading Pattern ◽  
Loading Waveform ◽  
Strain Rate Loading

The energy-based lifing method is based on the theory that the cumulative energy in all hysteresis loops of a specimens’ lifetime is equal to the energy in a monotonic tension test. Based on this theory, fatigue life can be calculated by dividing monotonic strain energy by a hysteresis energy model, which is a function of stress amplitude. Recent studies have focused on developing this method for a sine wave loading pattern — a variable strain rate. In order to remove the effects of a variable strain rate throughout the fatigue cycle, a constant strain rate triangle wave loading pattern was tested. The testing was conducted at various frequencies to evaluate the effects of multiple constant strain rates. Hysteresis loops created with sine wave loading and triangle loading were compared. The effects of variable and constant strain rate loading patterns on hysteresis loops throughout a specimens’ fatigue life are examined.

scholarly journals Tracer Transport in a Homogeneous Porous Medium: Experimental Study and Acquisition Data with LabVIEW

2021 ◽  
Author(s):  
Sana Dardouri ◽  
Jalila Sghaier
Keyword(s):  
Electrical Conductivity ◽  
Experimental Study ◽  
Porous Medium ◽  
Real Time ◽  
Soil Column ◽  
The State ◽  
Tracer Transport ◽  
Solute Transfer ◽  
Homogeneous Porous Medium ◽  
Series Of Experiments

This work represent the incorporation of information procurement (DAQ) equipment and programming to acquire information (LabVIEW) as well as real-time transport to show parameter appraises with regard to subsurface stream and transport issues. The main objective is to understand the mechanism of water and solute transfer in a sandy medium and to study the effect of some parameters on the transport of an inert tracer. In order to achieve this objective, a series of experiments were carried out on a soil column equipped with a tensiometer to monitor the state of saturation of the medium and by two four-electrode probes for measuring the electrical conductivity in the porous medium.

Strain Rate and Loading Waveform Effects on an Energy-Based Fatigue Life Prediction for AL6061-T6

2013 ◽  
Vol 136 (2) ◽  
Author(s):  
Todd Letcher ◽  
M.-H. H. Shen ◽  
Onome Scott-Emuakpor ◽  
Tommy George ◽  
Charles Cross
Keyword(s):  
Fatigue Life ◽  
Strain Rate ◽  
Constant Strain Rate ◽  
Hysteresis Loops ◽  
Sine Wave ◽  
Wave Loading ◽  
Cumulative Energy ◽  
Loading Pattern ◽  
Loading Waveform ◽  
Strain Rate Loading

The energy-based lifing method is based on the theory that the cumulative energy in all hysteresis loops of a specimens' lifetime is equal to the energy in a monotonic tension test. Based on this theory, fatigue life can be calculated by dividing monotonic strain energy by a hysteresis energy model, which is a function of stress amplitude. Recent studies have focused on developing this method for a sine wave loading pattern—a variable strain rate. In order to remove the effects of a variable strain rate throughout the fatigue cycle, a constant strain rate triangle wave loading pattern was tested. The testing was conducted at various frequencies to evaluate the effects of multiple constant strain rates. Hysteresis loops created with sine wave loading and triangle loading were compared. The effects of variable and constant strain rate loading patterns on hysteresis loops throughout a specimens' fatigue life are examined.

Research on forecasting model of sandstone deformation rate during sine wave loading segment under the lag effect

2010 ◽  
Vol 53 (5) ◽  
pp. 1442-1449 ◽  
Author(s):  
Jie Liu ◽  
JianLin Li ◽  
JianJun Qu ◽  
JiFang Zhou ◽  
ChaoFeng ZhanG ◽  
...  
Keyword(s):  
Deformation Rate ◽  
Sine Wave ◽  
Forecasting Model ◽  
Wave Loading ◽  
Lag Effect

The effect of shock-wave loading on transformation temperatures, elastic and anelastic properties of β′ 1 Cu-Al-Ni martensitic single crystals

2002 ◽  
Vol 82 (12) ◽  
pp. 2419-2440
Author(s):  
S. Golyandin ◽  
S. Kustov ◽  
S. Nikanorov ◽  
K. Sapozhnikov ◽  
A. Sinani ◽  
...  
Keyword(s):  
Shock Wave ◽  
Single Crystals ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Transformation Temperatures

Effects of sine wave contexts on compensation for coarticulation

2009 ◽  
Author(s):  
Navin Viswanathan ◽  
James S. Magnuson ◽  
Carol A. Fowler
Keyword(s):  
Sine Wave
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