Results 31 to 40 of about 16,642,961 (356)

Fatigue Testing of Drillpipe

open access: yesSPE Drilling & Completion, 1994
Summary Twenty-nine tests in air and 27 tests in a 3.5% NaCl solution were conducted to test the fatigue strength of Grade E 4.5-in.-OD, 16.6-lbm/ft [114-mm-OD, 24.7-kg/m] drillpipe. The effects of stress range, mean stress, corrosion, and upset geometry were tested on the drillpipe body alone and on specimens that included the tool ...
Grondin, G. Y., Kulak, G. L.
openaire   +2 more sources

Impact of Pilots' Tiredness on the Outcome of Psychological Testing [PDF]

open access: yes, 2019
Presented work is primarily oriented on the experimental verification of the influence of fatigue on the psychological condition of the flying personnel, using psychological and performance tests.
Freigang M.   +6 more
core   +1 more source

Interrupted fatigue testing with periodic tomography to monitor porosity defects in wire + arc additive manufactured Ti-6Al-4V

open access: yesAdditive Manufacturing, 2019
Porosity defects remain a challenge to the structural integrity of additive manufactured materials, particularly for parts under fatigue loading applications.
R. Biswal   +6 more
semanticscholar   +1 more source

Shape Rolling Process Combined with In-line Induction Heat Treatment for Rectangular Wire Die Springs

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
In recent years, environmental issues and high labor costs have been receiving increasing attention. One example is the manufacturing process of conventional oil tempered shaped wire which is high cost, time-consuming and polluting. The aim of this study
Chong-Ching TSENG, Shi-Pin HO
doaj   +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

In situ synchrotron ultrasonic fatigue testing device for 3D characterisation of internal crack initiation and growth

open access: yesFatigue & Fracture of Engineering Materials & Structures, 2019
This work presents a new ultrasonic fatigue testing device for studying the initiation and propagation mechanisms of internal microstructurally short fatigue cracks using in situ synchrotron tomography.
A. Messager   +10 more
semanticscholar   +1 more source

KARAKTERISTIK PATAH DAN KETAHANAN LELAH BESI COR MALLEABLE

open access: yesRekayasa Mesin, 2023
Malleable cast iron is one of the cast irons that has excellent forging properties. Malleable cast iron is the result of heat treatment of white cast iron, so that cementite is decomposed to form graphite in the form of rosettes.
M Dzaky Hafidz, Hendri Chandra
doaj   +1 more source

Acoustic Emission Signatures of Fatigue Damage in Idealized Bevel Gear Spline for Localized Sensing

open access: yesMetals, 2017
In many rotating machinery applications, such as helicopters, the splines of an externally-splined steel shaft that emerges from the gearbox engage with the reverse geometry of an internally splined driven shaft for the delivery of power.
Lu Zhang   +3 more
doaj   +1 more source

Fatigue Testing of Support Structure for Offshore Wind Turbine

open access: yes南方能源建设, 2020
[Introduction] In view of the fatigue problem of support structure for offshore wind turbine, fatigue performance of transition piece with external stiffening ring was studied.
LI Hengjun   +4 more
doaj   +1 more source

Fatigue crack growth in a laser shock peened residual stress field [PDF]

open access: yes, 2019
Laser Shock Peening is a surface treatment technique used in the aerospace sector to increase fatigue life, as well as resistance to fretting fatigue and stress corrosion cracking.
Achintha   +19 more
core   +1 more source

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