Results 11 to 20 of about 508,360 (354)

Effect of expiratory muscle fatigue on exercise tolerance and locomotor muscle fatigue in healthy humans [PDF]

open access: yes, 1988
High-intensity exercise (> or =90% of maximal O(2) uptake) sustained to the limit of tolerance elicits expiratory muscle fatigue (EMF). We asked whether prior EMF affects subsequent exercise tolerance.
Taylor, BJ, Romer, LM
core   +3 more sources

Limit, shakedown and ratchet analyses of defective pipeline under internal pressure and cyclic thermal loading [PDF]

open access: yes, 2011
In this study, the limit load, shakedown and ratchet limit of a defective pipeline subjected to constant internal pressure and a cyclic thermal gradient are analyzed.
Chen, Haofeng   +4 more
core   +1 more source

Influence of Carbon Content on Elevated Temperature Fatigue Properties of Different Steel Alloys [PDF]

open access: yesEngineering and Technology Journal, 2012
Fatigue properties (fatigue life and fatigue limit) of three different carbon content steel alloys, CK35, Y8 and Y10 were investigated at RT and 300 ºC fatigue testing.
Hessen J. Mohamed Alalkawi   +3 more
doaj   +1 more source

High cycle fatigue of ARMCO iron severely deformed by ECAP [PDF]

open access: yes, 2017
The high-cycle fatigue behavior of ARMCO iron severely deformed by Equal Channel Angular Pressing (ECAP) at room temperature through route Bc until 8 passes, with an average grain size of ~365 nm, was studied and compared with the same material in the ...
Cabrera Marrero, José M.   +2 more
core   +2 more sources

Fatigue assessment by energy approach during tensile tests on AISI 304 steel [PDF]

open access: yesFracture and Structural Integrity, 2017
Estimation of the fatigue limit for steel ductile materials using non-destructive methods is a topic of great interest to researchers today. In recent years, the method adopted has implemented infrared sensors to detect the surface temperature and ...
A. Risitano   +4 more
doaj   +1 more source

Experimental Study on the Effect of Temperature on the Fatigue Endurance Limit of Two AL Alloys [PDF]

open access: yesEngineering and Technology Journal, 2012
In this work , an experimental study to obtain the fatigue endurance limit for two aluminum alloy , 2024 and 5052 , were carried out at stress ratio R=-1 and rotary bending tests .
ad Abbas Al-Saraf
doaj   +1 more source

A study on rapid evaluation of fatigue limit based on temperature variation (Source of the second harmonic of temperature variation)

open access: yesNihon Kikai Gakkai ronbunshu, 2018
The technique of rapid evaluation of fatigue limit using infrared thermography has been paid attention during the past 30 years. This technique is beneficial because it also makes possible to detect the location of fatigue damage in real structures.
Ryogo KAWAI   +3 more
doaj   +1 more source

A study on rapid evaluation of fatigue limit based on temperature variation (Method for determining the fatigue limit based on the second harmonic amplitude of temperature)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The technique of rapid evaluation of fatigue limit using infrared camera is beneficial because it not only allows the fatigue limit to be obtained in a short time and at low cost, but also it makes possible to detect the location of fatigue damage in ...
Kosuke TOKIHIRO   +4 more
doaj   +1 more source

A unified statistical model for S-N fatigue curves: probabilistic definition [PDF]

open access: yes, 2013
In recent years, experimental tests exploring the gigacycle fatigue properties of materials suggest the introduction of modifications in well known statistical fatigue life models.
ASTM E739-91 Reapproved 2004   +33 more
core   +1 more source

Role of compressive residual stresses produced by cutting and rubbing processing on fatigue strength of heat-treated SCM435 smooth specimens

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Aiming at an enhanced fatigue strength of various metal materials, surface treatment named cutting and rubbing process was developed. The surface of processed specimen of a quenched and tempered SCM435 had an extremely large value of compressive residual
Terutoshi YAKUSHIJI   +2 more
doaj   +1 more source

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