نتایج جستجو برای: bending fatigue

تعداد نتایج: 97074  

Nowadays modification of metallic biomaterials which are used as implants for bone and hard tissues replacement is considered as an important subject. In the current study, corrosion fatigue properties of Ti-6Al-4V alloy investigated via Rotating-Bending standard test method and then, the results compared with the fatigue properties of the specimens tested in the same conditions. Scanning elect...

2015
J. F. Dong

This paper presents experimental research on the fatigue and post-fatigue static behaviour of reinforced concrete beams strengthened with glass or carbon fibre reinforced polymer (FRP) sheets placed either vertically or obliquely. All beams for fatigue tests were subjected to four-point bending for one million cycles with a frequency of 5 Hz. The results show that the FRP sheets can be used to ...

2007
R. Ghajar M. Behrooz

Fatigue evaluation is one of the most concerning issue in the design of mechanical parts subject to alternative forces. Fatigue life estimation is more complicated when loads act on different axes. This paper shows the stress analysis result of the steel shaft of a high-speed microgenerator rotor with 47750 rpm and 100kW which has been carried out with analytical stress formulation. The shaft i...

2017
Stefano Guarino Gennaro Salvatore Ponticelli

This paper deals with the improvement of fatigue life of AISI 1040 steel components by using a High Power Diode Laser (HPDL). First, the meaningfulness of each operational parameter was assessed by varying the experimental laser power and scan speed. After laser treatment, fatigue tests were performed to investigate the influence of laser processing parameters on the material resistance. The fa...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 1996

Journal: :Forschung Im Ingenieurwesen-engineering Research 2021

Gear tooth failure due to root bending fatigue is one of the most dangerous modes in gears. Therefore, precise definition gear strength a key aspect. Furthermore, order calculate service life component, an accurate estimation S?N curve required. This must properly account for slope region, region ahead knee, as well position knee itself. Hence, obtain at different reliability levels, proper dis...

Warm mix asphalts (WMA), because of their low production and compact temperatures, may have different behaviors in long term. In the present work, the energy-based criteria along with the 50% reduction in initial stiffness (Nf50%) using four-point bending test under controlled-strain conditions of 1000 microstrain were applied to compare the prepared two warm mix and HMA samples. All these crit...

This research was conducted in order to evaluate fatigue behavior of asphalt mixes containing Electric Arc Furnace (EAF) steel slag. After initial evaluation of the properties of EAF steel slag using X-ray Diffraction (XRD) and Scanning Electric Microscope (SEM), six sets of laboratory mixtures were prepared. Each set were treated replacing various portions of limestone aggregates of the mix wi...

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