Results 161 to 170 of about 1,897,908 (315)

Fatigue after COVID-19 in occupationally exposed workers: prevalence, severity and associated risk factors in a cross-sectional analysis of a multicentre registry study. [PDF]

BMJ Open
Kobes K, Rademacher C, Kozak A, Gonschorek A, Schmehl I, Seddigh S, Fürst A, Wohlfarth K, Engel L, Wefers J, Wischnat J, Kleinmüller O, Nienhaus A, Tegenthoff M, Schwenkreis P.   +14 more
europepmc   +1 more source

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, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

The Effect of Progressive Relaxation Exercises Applied to Individuals With Type 2 Diabetes on FATIQUE Level and Sleep Quality: A Randomised Controlled Study. [PDF]

Scand J Caring Sci
Vardar Inkaya B, Koç A, Genç B, Mumcu C, Güngör C, Ersoy R.   +5 more
europepmc   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

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, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Exploring the Relationship Between Alarm Fatigue and Compassion Fatigue Among Critical Care Nurses. [PDF]

Nurs Crit Care
Ceran FN, Güneş Ü.
europepmc   +1 more source

The analysis of fatigue crack growth mechanism and oxidation and fatigue life at elevated temperatures [PDF]

Two quantitative models based on experimentally observed fatigue damage processes have been made: (1) a model of low cycle fatigue life based on fatigue crack growth under general-yielding cyclic loading; and (2) a model of accelerated fatigue crack ...
Liu, H. W.
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

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, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Broadening the understanding of fatigue in multiple sclerosis: a qualitative study protocol of the EMA-FAMS project. [PDF]

BMJ Open
Lukkaroinen AM, Suikkanen S, Vuoskoski P, Miettinen O, Romberg A, Hämäläinen P, Rintala A.   +6 more
europepmc   +1 more source

Characterization of Macro/Microstructure and Corrosion Resistance of Austenitic Gas Tungsten Arc Welding Cladding

Advanced Engineering Materials, EarlyView.
Cladding is a proven method that boosts the surface qualities of mechanical parts by applying a layer of more durable material over a base substrate. This work responds to the needs of offshore and pressure vessels sectors by focusing on cladding a super austenitic steel onto low‐carbon steel through gas tungsten arc welding.
E. J. da Cruz Junior, F. M. F. A. Varasquim, F. O. Carvalho, L. F. F. Santiago, V. A. Ventrella, I. Calliari, M. Pigato   +6 more
wiley   +1 more source

Differential effects of caffeine, acute aerobic exercise, and placebo on mental fatigue. [PDF]

PLoS One
Shirzad A, Frewen N, Morava A, Elshawish N, Prapavessis H.   +4 more
europepmc   +1 more source