Results 81 to 90 of about 403,471 (309)
Cumulative fatigue damage behavior of MAR M-247 [PDF]
The objective was to examine the room temperature fatigue and nonlinear cumulative fatigue damage behavior of the cast nickel-based superalloy, MAR M-247. The fatigue test matrix consisted of single-level, fully reversed fatigue experiments.
Halford, Gary R. +2 more
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Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann +3 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Fatigue damage interaction behavior of PWA 1480 [PDF]
The fatigue damage interaction behavior of PWA 1480 single crystal alloy has been experimentally established for the two-level loading case in which a block of low-cycle fatigue loading is followed by high-cycle fatigue loading to failure.
Mcgaw, Michael A.
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Discussion of "Simplified Model of Low Cycle Fatigue for RC Frames"
, 1999 To model strength degradation due to low cycle fatigue, at least three different approaches can be considered. One possibility is based on the formulation of a new free energy function and damage energy release rate, as was proposed by Ju(1989).
Alarcón Álvarez, Enrique +2 more
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Limit, shakedown and ratchet analyses of defective pipeline under internal pressure and cyclic thermal loading [PDF]
, 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
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Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
COMBINED HIGH AND LOW CYCLE FATIGUE LIFE PREDICTION MODEL TAKING ACCOUNT OF COUPLED DAMAGE
Jixie qiangduMechanical parts such as gas turbine blades are often subjected to low cycle fatigue caused by low⁃frequency centrifugal force and high cycle fatigue caused by high⁃frequency vibration loads during the working process,and the damage caused by the ...
LIU PengShuai, WANG XiaoWei, HOU Jun
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Three dimensional thrust chamber life prediction [PDF]
A study was performed to analytically determine the cyclic thermomechanical behavior and fatigue life of three configurations of a Plug Nozzle Thrust Chamber. This thrust chamber is a test model which represents the current trend in nozzle design calling
Armstrong, W. H., Brogren, E. W.
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