Thermo-mechanical fatigue resistance characterization and materials ranking from heat-flux-controlled tests. Application to cast-irons for automotive exhaust part

2013 ◽  
Vol 55 ◽  
pp. 136-146 ◽  
Author(s):  
F. Szmytka ◽  
P. Michaud ◽  
L. Rémy ◽  
A. Köster
Keyword(s):  
Heat Flux ◽  
Fatigue Resistance ◽  
Automotive Exhaust ◽  
Cast Irons ◽  
Mechanical Fatigue

Nitriding effect on fatigue resistance of grey and nodular cast irons

2012 ◽  
Vol 6 (1) ◽  
pp. 33-37 ◽  
Author(s):  
R Neves Penha ◽  
J C Morilla ◽  
J Vatavuck ◽  
L C F Canale
Keyword(s):  
Fatigue Resistance ◽  
Cast Irons

Study on Thermal Fatigue Resistance of Non-Smooth Cast Iron Treated by Laser Surface Alloying of CrNi Powders

2011 ◽  
Vol 291-294 ◽  
pp. 1405-1411
Author(s):  
Tong Xin ◽  
Zhou Hong ◽  
Liu Min
Keyword(s):  
Cast Iron ◽  
Fatigue Resistance ◽  
Thermal Fatigue ◽  
Fatigue Behavior ◽  
Laser Surface ◽  
Surface Alloying ◽  
Laser Melting ◽  
Cast Irons ◽  
Laser Surface Alloying ◽  
Thermal Fatigue Resistance

The past studies indicated that thermal fatigue resistance of cast irons could be improved by partly laser melting treatment. However the only disadvantage of this technology is that the enhancement of thermal fatigue resistance would be limited because of the fixed chemical composition of sample matrix. For this purpose, the laser surface alloying of CrNi was selected for changing both the compositions and the microstructures of laser treated zone, and the effects of alloy powder compositions on thermal fatigue behavior were also investigated in this paper. The results indicate that the alloy elements distribute homogeneously, and their contents increase markedly in the non-smooth unit on the alloyed layer. The non-smooth unit is strengthened further compared with laser melting treatment. Thermal fatigue resistance of cast iron is enhanced evidently by laser surface alloying of CrNi powders, and for all samples tested, those treated with 25%Cr-75%Ni powders have the best thermal fatigue resistance.

Improving mechanical fatigue resistance by optimizing the nanoporous structure of inkjet-printed Ag electrodes for flexible devices

2014 ◽  
Vol 25 (12) ◽  
pp. 125706 ◽  
Author(s):  
Byoung-Joon Kim ◽  
Thomas Haas ◽  
Andreas Friederich ◽  
Ji-Hoon Lee ◽  
Dae-Hyun Nam ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Nanoporous Structure ◽  
Flexible Devices ◽  
Mechanical Fatigue ◽  
Ag Electrodes

scholarly journals Mechanical fatigue resistance of an implantable branched lead system for a distributed set of longitudinal intrafascicular electrodes

2017 ◽  
Vol 14 (6) ◽  
pp. 066014 ◽  
Author(s):  
A E Pena ◽  
S S Kuntaegowdanahalli ◽  
J J Abbas ◽  
J Patrick ◽  
K W Horch ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Lead System ◽  
Mechanical Fatigue ◽  
Intrafascicular Electrodes

scholarly journals Damage mechanisms in silicon-molybdenum cast irons subjected to thermo-mechanical fatigue

2017 ◽  
Vol 99 ◽  
pp. 258-265 ◽  
Author(s):  
V. Norman ◽  
P. Skoglund ◽  
D. Leidermark ◽  
J. Moverare
Keyword(s):  
Cast Irons ◽  
Damage Mechanisms ◽  
Mechanical Fatigue

Influence of microstructure on the thermo-mechanical fatigue behavior and life of vermicular graphite cast irons

2020 ◽  
Vol 771 ◽  
pp. 138617 ◽  
Author(s):  
M.X. Zhang ◽  
J.C. Pang ◽  
Y. Qiu ◽  
S.X. Li ◽  
M. Wang ◽  
...  
Keyword(s):  
Fatigue Behavior ◽  
Cast Irons ◽  
Mechanical Fatigue

Effect of mechanically imposed stresses on the contact fatigue resistance of two cast irons with high hardness matrix

Wear ◽  
2007 ◽  
Vol 263 (1-6) ◽  
pp. 700-706 ◽  
Author(s):  
Julio Cesar Klein das Neves ◽  
Cristiane Martins Ângelo ◽  
Roberto Martins Souza ◽  
Amilton Sinatora
Keyword(s):  
Fatigue Resistance ◽  
Contact Fatigue ◽  
High Hardness ◽  
Cast Irons ◽  
Contact Fatigue Resistance

scholarly journals Mechanical Fatigue Resistance of Piezoelectric PVDF Polymers

Micromachines ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 503 ◽  
Author(s):  
Youn-Hwan Shin ◽  
Inki Jung ◽  
Hyunchul Park ◽  
Jung Pyeon ◽  
Jeong Son ◽  
...  
Keyword(s):  
Fatigue Resistance ◽  
Remnant Polarization ◽  
Output Voltage ◽  
Piezoelectric Response ◽  
Phase Content ◽  
Metal Electrodes ◽  
Mechanical Fatigue ◽  
Tension And Compression ◽  
Response To Stress ◽  
Tension Experiments

The fatigue resistance of piezoelectric PVDF has been under question in recent years. While some report that a significant degradation occurs after 106 cycles of repeated voltage input, others report that the reported degradation originates from the degraded metal electrodes instead of the piezoelectric PVDF itself. Here, we report the piezoelectric response and remnant polarization of PVDF during 107 cycles of repeated compression and tension, with silver paste-based electrodes to eliminate any electrode effect. After applying repeated tension and compression of 1.8% for 107 times, we do not observe any notable decrease in the output voltage generated by PVDF layers. The results from tension experiments show stable remnant polarization of 5.5 μC/cm2, however, the remnant polarization measured after repeated compression exhibits a 7% decrease as opposed to the tensed PVDF. These results suggest a possible anisotropic response to stress direction. The phase analyses by Raman spectroscopy reveals no significant change in the phase content, demonstrating the fatigue resistance of PVDF.

scholarly journals The effect of N-acetylcysteine on mechanical fatigue resistance of antibiotic-loaded bone cement

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Erhan Sukur ◽  
Abdulhalim Akar ◽  
Huseyin Nevzat Topcu ◽  
Ozgur Cicekli ◽  
Alauddin Kochai ◽  
...  
Keyword(s):  
Bone Cement ◽  
Fatigue Resistance ◽  
Mechanical Fatigue
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