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

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.

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Comparative Study on Fatigue Behavior of K and K-T Steel Truss Joints

International Journal of Science and Research (IJSR) ◽

10.21275/v5i6.18061603 ◽

2016 ◽

Vol 5 (6) ◽

pp. 1842-1846

Keyword(s):

Comparative Study ◽

Fatigue Behavior ◽

Steel Truss

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The tensile fatigue behavior of para-oriented aramid fibers and their fracture morphology

Journal of Applied Polymer Science ◽

10.1002/app.1977.070211017 ◽

1977 ◽

Vol 21 (10) ◽

pp. 2791-2815 ◽

Cited By ~ 60

Author(s):

L. Konopasek ◽

J. W. S. Hearle

Keyword(s):

Fatigue Behavior ◽

Fracture Morphology ◽

Aramid Fibers ◽

Tensile Fatigue

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

MATEC Web of Conferences ◽

10.1051/matecconf/201816506001 ◽

2018 ◽

Vol 165 ◽

pp. 06001 ◽

Cited By ~ 2

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.

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