Fatigue Behavior of Granite Subjected to Cyclic Loading Under Triaxial Compression Condition

2013 ◽  
Vol 46 (6) ◽  
pp. 1603-1615 ◽  
Author(s):  
Zhechao Wang ◽  
Shucai Li ◽  
Liping Qiao ◽  
Jiangang Zhao
Keyword(s):  
Cyclic Loading ◽  
Fatigue Behavior ◽  
Triaxial Compression ◽  
Compression Condition

scholarly journals Bond Fatigue of TRC with Epoxy Impregnated Carbon Textiles

2019 ◽  
Vol 9 (10) ◽  
pp. 1980 ◽  
Author(s):  
Juliane Wagner ◽  
Manfred Curbach
Keyword(s):  
Cyclic Loading ◽  
Residual Strength ◽  
Negative Impact ◽  
Fatigue Behavior ◽  
Tensile Load ◽  
Textile Reinforced Concrete ◽  
Anchorage Length ◽  
Static Tests ◽  
Number Of Cycles ◽  
Bearing Behavior

For the economical construction of fatigue loaded structures with textile reinforced concrete (TRC), it is necessary to investigate the fatigue behavior of the materials. Since next to the tensile load-bearing behavior, the bond behavior of a material is crucial as well, the present paper deals with the bond fatigue of TRC with epoxy-impregnated carbon textiles. First, static tests are carried out to determine the sufficient anchorage length of the investigated material combination. Afterwards, the influence of cyclic loading on the necessary anchorage length, deformation, stiffness, and residual strength is investigated. The results of the cyclic tests are summarized in stress-number of cycles to failure (S-N) diagrams. In the end, it can be said that the cyclic loading has no negative impact on the necessary anchorage length. If specimens withstand the cyclic loading, there is no difference between their residual strength and the reference strength. The failure of specimens occurs only at high load levels, provided that the anchorage length is sufficient.

A Comparative Study of the Tensile Fatigue Behavior of Cotton—Polyester Blended Yarn by Cyclic Loading

2007 ◽  
Vol 39 (2) ◽  
pp. 165-179 ◽  
Author(s):  
Ali A.A. Jeddi ◽  
H. Nosraty ◽  
M.R. Taheri otaghsara ◽  
M. Karimi
Keyword(s):  
Cyclic Loading ◽  
Comparative Study ◽  
Fatigue Behavior ◽  
Blended Yarn ◽  
Tensile Fatigue

scholarly journals Effects of thermomechanical history and environment on the fatigue behavior of (β)-Ti-Nb implant alloys

2018 ◽  
Vol 165 ◽  
pp. 06001 ◽  
Author(s):  
André Reck ◽  
Stefan Pilz ◽  
Ulrich Thormann ◽  
Volker Alt ◽  
Annett Gebert ◽  
...  
Keyword(s):  
Fatigue Strength ◽  
Cyclic Loading ◽  
Fatigue Behavior ◽  
Fatigue Tests ◽  
Grain Structure ◽  
Fatigue Properties ◽  
Β Phase ◽  
Α Phase ◽  
Nb Content ◽  
Implant Alloys

This study examined the fatigue properties of a newly developed cast and thermomechanical processed (β)-Ti-40Nb alloy for a possible application as biomedical alloy due to exceptional low Young’s modulus (64-73 GPa), high corrosion resistance and ductility (20-26%). Focusing on the influence of two microstructural states with fully recrystallized β-grain structure as well as an aged condition with nanometer-sized ω-precipitates, tension-compression fatigue tests (R=-1) were carried out under lab-air and showed significant differences depending on the β-phase stability under cyclic loading. Present ω- precipitates stabilized the β-phase against martensitic α’’ phase transformations leading to an increased fatigue limit of 288 MPa compared to the recrystallized state (225 MPa), where mechanical polishing and subsequent cyclic loading led to formation of α’’-phase due to the metastability of the β-phase. Additional studied commercially available (β)-Ti-45Nb alloy revealed slightly higher fatigue strength (300 MPa) and suggest a change in the dominating cyclic deformation mechanisms according to the sensitive dependence on the Nb-content. Further tests in simulated body fluid (SBF) at 37°C showed no decrease in fatigue strength due to the effect of corrosion and prove the excellent corrosion fatigue resistance of this alloy type under given test conditions.

scholarly journals Effect of Creep and Cyclic Loading on Pulsating Fatigue Behavior for Various Ti Alloys under Stress Ratio R=0

2013 ◽  
Vol 77 (10) ◽  
pp. 455-460 ◽  
Author(s):  
Gen-ichiro Nagatani ◽  
Rumi Kitazawa ◽  
Makoto Yoshida ◽  
Susumu Horibe
Keyword(s):  
Cyclic Loading ◽  
Stress Ratio ◽  
Fatigue Behavior ◽  
Ti Alloys

scholarly journals Molecular Simulations of Cyclic Loading Behavior of Carbon Nanotubes Using the Atomistic Finite Element Method

2009 ◽  
Vol 2009 ◽  
pp. 1-9 ◽  
Author(s):  
Jianfeng Wang ◽  
Marte S. Gutierrez
Keyword(s):  
Finite Element Method ◽  
Carbon Nanotubes ◽  
Finite Element ◽  
Cyclic Loading ◽  
Large Strain ◽  
Fatigue Behavior ◽  
Dominant Role ◽  
Molecular Simulations ◽  
Viscoelastic Behavior ◽  
Element Method

The potential applications of carbon nanotubes (CNT) in many engineered bionanomaterials and electromechanical devices have imposed an urgent need on the understanding of the fatigue behavior and mechanism of CNT under cyclic loading conditions. To date, however, very little work has been done in this field. This paper presents the results of a theoretical study on the behavior of CNT subject to cyclic tensile and compressive loads using quasi-static molecular simulations. The Atomistic Finite Element Method (AFEM) has been applied in the study. It is shown that CNT exhibited extreme cyclic loading resistance with yielding strain and strength becoming constant within limited number of loading cycles. Viscoelastic behavior including nonlinear elasticity, hysteresis, preconditioning (stress softening), and large strain have been observed. Chiral symmetry was found to have appreciable effects on the cyclic loading behavior of CNT. Mechanisms of the observed behavior have been revealed by close examination of the intrinsic geometric and mechanical features of tube structure. It was shown that the accumulated residual defect-free morphological deformation was the primary mechanism responsible for the cyclic failure of CNT, while the bond rotating and stretching experienced during loading/unloading played a dominant role on the strength, strain and modulus behavior of CNT.

scholarly journals Relationship between monotonic and cyclic behavior of saturated soft clay in undrained triaxial compression tests

2021 ◽  
Author(s):  
Tingyu Wu ◽  
Jie Han ◽  
Yuanqiang Cai ◽  
Lin Guo ◽  
Jun Wang
Keyword(s):  
Cyclic Loading ◽  
Triaxial Compression ◽  
Soft Clay ◽  
Cyclic Behavior ◽  
Triaxial Tests ◽  
Engineering Practice ◽  
Compression Tests ◽  
Cyclic Tests ◽  
Saturated Soft Clay ◽  
Triaxial Compression Tests

Cyclic loading-induced deformation of soil is a common problem in the engineering practice. In the current practice, however, monotonic triaxial tests are more commonly used in the practice, due to the availability of apparatus and ease of operation. Thus, it will be very useful and practical if the monotonic triaxial tests can be used to evaluate the behavior of soil under cyclic loading. This study aims to find an explicit relationship between monotonic and cyclic behavior of saturated soft clay. Six monotonic and nine cyclic triaxial compression tests were conducted on undisturbed saturated soft clay under an undrained condition. The test results showed that the monotonic and cyclic tests shared the same stress-strain surface in a three-dimensional space p^'-q-ε_a. It is also found possible to evaluate the effective stress states of cyclic tests at two specific numbers of cycles, using corresponding monotonic tests. Based on these two findings, a simple procedure was then proposed to predict the peak axial strain for the saturated soft clay under different cyclic loadings based on the monotonic tests and only one cyclic test, which was further verified against more test data from the previous literature.

scholarly journals Creep Behavior of Red-Clay Under Triaxial Compression Condition

2020 ◽  
Vol 7 ◽  
Author(s):  
Kaixi Xue ◽  
Shengfu Wang ◽  
Yanxiang Hu ◽  
Mingdong Li
Keyword(s):  
Creep Behavior ◽  
Triaxial Compression ◽  
Red Clay ◽  
Compression Condition

In situ observation of fatigue behavior of single crystal copper micron-scale specimen under tension-compression cyclic loading

2018 ◽  
Vol 2018 (0) ◽  
pp. OS1403
Author(s):  
Takashi SUMIGAWA ◽  
Kim BYUNGWOON ◽  
Yuki MIZUNO ◽  
Takuma MORIMURA ◽  
Takayuki KITAMURA
Keyword(s):  
Cyclic Loading ◽  
Single Crystal ◽  
Fatigue Behavior ◽  
Single Crystal Copper
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