Use of surface free energy properties to predict moisture damage potential of Asphalt concrete mixture in cyclic loading condition

2003 ◽  
Vol 7 (4) ◽  
pp. 381-387 ◽  
Author(s):  
Sung-Hee Kim ◽  
Jin-Hoon Jeong ◽  
Nakseok Kim
Keyword(s):  
Free Energy ◽  
Cyclic Loading ◽  
Surface Free Energy ◽  
Asphalt Concrete ◽  
Loading Condition ◽  
Moisture Damage ◽  
Concrete Mixture ◽  
Damage Potential ◽  
Cyclic Loading Condition

Investigation on surface free energy and moisture damage of asphalt mortar with fine solid waste

2020 ◽  
Vol 231 ◽  
pp. 117140 ◽  
Author(s):  
Hengji Zhang ◽  
Hui Li ◽  
Ahmed Abdelhady ◽  
Ming Jia ◽  
Ning Xie
Keyword(s):  
Free Energy ◽  
Solid Waste ◽  
Surface Free Energy ◽  
Moisture Damage ◽  
Asphalt Mortar

Unresolved Issues With Regard to Creep and Creep Fatigue Life Prediction

2002 ◽  
Author(s):  
J. Oh ◽  
N. Katsube ◽  
F. W. Brust
Keyword(s):  
Cyclic Loading ◽  
Damage Evolution ◽  
Life Prediction ◽  
Loading Condition ◽  
Cyclic Strain ◽  
Rupture Process ◽  
Steady State Creep ◽  
Creep Failure ◽  
Cyclic Loading Condition ◽  
Creep Fatigue

This paper studies intergranular creep failure of high temperature service material under a stress-controlled unbalanced cyclic loading condition. The grain boundary rupture process was numerically analyzed using Tvergaard’s axisymetric model. The present numerical model incorporated the experimentally verified Murakami-Ohno cyclic strain hardening creep law and Norton’s creep law. The numerical results show that void growth accelerates under cyclic loading condition. Also, analysis shows that a steady state creep law is not sufficient to analyze damage evolution under cyclic loading conditions.

scholarly journals The influence of stress level on the ratcheting magnitude and progress rate in steel alloys under uniaxial loading conditions

2021 ◽  
Author(s):  
Prasanth Chandrasekar
Keyword(s):  
Cyclic Loading ◽  
Plastic Strain ◽  
Strain Rate ◽  
Loading Condition ◽  
Stress Amplitude ◽  
Fatigue Loading ◽  
Mean Stress ◽  
Cyclic Loading Condition ◽  
Ratcheting Strain ◽  
Cyclic Damage

Engineering materials in their service life undergo symmetric or asymmetric fatigue loading, which leads to fatigue damage in the material. Ratcheting damage is due to the application of mean stress under cyclic loading condition. From deformation behavior perspective, application of mean stress under stress-controlled fatigue loading gives rise to accumulation of plastic strain in the material. Ratcheting strain increases with an increase in applied mean stress and stress amplitude. In addition, ratcheting behavior will increase in cyclic damage with the rise in strain accumulation and it can be illustrated by a shift in the hysteresis loop towards large plastic strain amplitudes. This study focuses on the ratcheting behavior of different steel materials under uniaxial cyclic loading condition and suggests a suitable method to arrest ratcheting by loading the materials at zero ratcheting strain rate condition with specified mean stress and stress amplitudes. The three dimensional surface is created with stress amplitude, mean stress and ratcheting strain rate for different steel materials. This represents a graphical surface zone to study the ratcheting strain rates for various mean stress and stress amplitude combinations.

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