Results 21 to 30 of about 80,743 (300)

Fission life-time calculation using a complex absorbing potential

open access: yesEPJ Web of Conferences, 2016
A comparison between the semi-classical approximation and the full quantum calculation with a complex absorbing potential is made with a model of the fission of 258Fm. The potential barrier is obtained with the constrained Skyrme HF+BCS theory.
Scamps Guillaume, Hagino Kouichi
doaj   +1 more source

Improved Calculation of Dynamic Load Capacity for Cylindrical Roller Thrust Bearings: Numerical Update of the Lifetime Reduction Factor η for Bearings with Small and Medium Spin-to-Roll Ratios

open access: yesLubricants
The standard procedures for calculating the lifetime of rolling bearings, defined by DIN ISO 281 and ISO/TS 16281, have been revisited in this work with a specific focus on redefining the η factor for cylindrical roller thrust bearings (CRTBs). The new η
Paul Sauvage   +3 more
doaj   +1 more source

Assessment of Depth Contact Endurance of Surface-Hardened Gears

open access: yesМеханика машин, механизмов и материалов
The main factors determining the performance of highly stressed surface-hardened gears of transmissions of energy-consuming machines are the parameters of a hardened layer, especially the behavior of hardness distribution over its thickness. The existing
Sergei P. Rudenko   +2 more
doaj   +1 more source

Fatigue analysis-based numerical design of stamping tools made of cast iron [PDF]

open access: yes, 2013
This work concerns stress and fatigue analysis of stamping tools made of cast iron with an essentially pearlitic matrix and containing foundry defects.
Ronde-Oustau, François   +4 more
core   +1 more source

Lifetime Measurement of Cesium Atoms Using a Cold Rydberg Gas [PDF]

open access: yes, 2022
The lifetimes of nS1/2 and nD5/2 (n = 60–83) cesium Rydberg states are measured accurately in a magneto-optical trap using the field ionization technique and analyzed with the existing theoretical model.
Yuechun Jiao   +4 more
core   +1 more source

Remaining Useful Life Estimation of Spindle Bearing Based on Bearing Load Calculation and Off-Line Condition Monitoring

open access: yesMachines, 2023
Spindles are key components of machine tools. An efficient estimation of the spindle condition and its prognosis can improve production efficiency and quality due to predictive maintenance planning.
Jiri Sova   +3 more
doaj   +1 more source

Generator coordinate method calculation of the E2 decay lifetime of shape isomers in the actinide region [PDF]

open access: yes, 1996
We apply the generator coordinate method in a fully microscopic calculation of the E2 decay lifetime of the shape isomeric states of 236U, 238U, and 240Pu.
Bonche, Paul   +5 more
core   +1 more source

PROBLEM RAISING: THE QUESTION OF DESIGN PROCEDURES DEPENDING ON THE COMPOSITION OF MIXTURES

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering
Different pavement structure design procedures have been carried out since 1960s in Hungary. The main principles of the most recent procedure were laid down in 1992 by Ervin Nemesdy, which was an empirical design guide.
Kornel Almassy, Domonkos Koch
doaj   +1 more source

DLTPulseGenerator: A library for the simulation of lifetime spectra based on detector-output pulses

open access: yesSoftwareX, 2018
The quantitative analysis of lifetime spectra relevant in both life and materials sciences presents one of the ill-posed inverse problems and, hence, leads to most stringent requirements on the hardware specifications and the analysis algorithms. Here we
Danny Petschke, Torsten E.M. Staab
doaj   +1 more source

Residual Lifetime Prediction for Multi-State System Using Control Charts to Monitor Affecting Noise Factor on Deterioration Process [PDF]

open access: yesJournal of Applied Research on Industrial Engineering, 2018
In this research, multi-state complex systems are analyzed in order to measure reliability and predict residual of systems’ lifetime under the effect of an out of control noise factor.
Neda Gol-Ahmadi, Sadigh Raissi
doaj   +1 more source

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