Results 11 to 20 of about 3,141,828 (240)

Model of Parametric Reliability of Woodworking Machine Tools

open access: yesЖурнал інженерних наук
The article aims to develop a model of the parametric reliability of woodworking machine tools based on the criterion of technological accuracy. For this purpose, a mathematical model of the operating time of a woodworking machine to parametric failure ...
Lidiia Dziuba   +3 more
doaj   +2 more sources

Modelling the impact of reduced variability of machine tool downtime [PDF]

open access: yes, 2008
A model is presented, which allows a machine tool in a service arrangement to be simulated. The impact of machine tool downtime and the sensitivity of machine performance to the services provided may be modelled and optimised.
Pearce, Nicholas Farquharson
core   +7 more sources

Uncertainty in Loading and Control of an Active Column Critical to Buckling

open access: yesShock and Vibration, 2012
Buckling of load-carrying column structures is an important design constraint in light-weight structures as it may result in the collapse of an entire structure.
G.C. Enss, R. Platz, H. Hanselka
doaj   +1 more source

Wear in wind turbine pitch bearings—A comparative design study

open access: yesWind Energy, 2022
We tested two types of ball bearings with an outer diameter of 750 mm to learn more about the challenges of oscillating motions for pitch bearings. The experimental conditions are derived from aero‐elastic simulations, long‐term wind speed measurements ...
Fabian Schwack   +4 more
doaj   +1 more source

Comparative Analysis of the Failure Rates of Shearer and Plow Systems—A Case Study

open access: yesEnergies, 2022
Mechanised plow and shearer systems are widely applied in underground mines all over the world. Both systems are used in the exploitation of hard coal deposited in the form of seams of various thickness.
Łukasz Bołoz   +2 more
doaj   +1 more source

Reliability approach for safe designing on a locking system [PDF]

open access: yes, 2010
The aim of this work is to predict the failure probability of a locking system. This failure probability is assessed using complementary methods: the First-Order Reliability Method (FORM) and Second-Order Reliability Method (SORM) as approximated methods,
ARNOUX, Philippe   +3 more
core   +1 more source

Development of Instrument Transmitter Protecting Device against High-Temperature Condition during Severe Accidents

open access: yesScience and Technology of Nuclear Installations, 2014
Reliable information through instrumentation systems is essential in mitigating severe accidents such as the one that occurred at the Fukushima Daiichi nuclear power plant. There are five elements which might pose a potential threat to the reliability of
Min Yoo, Sung Min Shin, Hyun Gook Kang
doaj   +1 more source

Grinding Chatter Detection and Identification Based on BEMD and LSSVM

open access: yesChinese Journal of Mechanical Engineering, 2019
Grinding chatter is a self-induced vibration which is unfavorable to precision machining processes. This paper proposes a forecasting method for grinding state identification based on bivarition empirical mode decomposition (BEMD) and least squares ...
Huan-Guo Chen   +5 more
doaj   +1 more source

Machine performance degradation assessment and remaining useful life prediction using proportional hazard model and support vector machine [PDF]

open access: yes, 2012
Machine performance degradation assessment and remaining useful life (RUL) prediction are of crucial importance in condition-based maintenance to reduce the maintenance cost and improve the reliability.
Yang, Bo-Suk   +3 more
core   +1 more source

Passive load alleviation bi-stable morphing concept

open access: yesAIP Advances, 2012
In wind turbines, large loads caused by fluid structure interaction leading to fatigue failure and added robustness to withstand high bending stresses on the root of blades constitute important design bottlenecks.
A. F. Arrieta   +3 more
doaj   +1 more source

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