Results 61 to 70 of about 162,264 (296)

Acoustic Emission Monitoring of Mechanical Seals Using MUSIC Algorithm based on Higher Order Statistics [PDF]

open access: yes, 2009
This paper presents the use of the MUSIC algorithm improved by higher order statistics (HOS) to extract key features from the noisy acoustic emission (AE) signals.
Gu, Fengshou, Ball, Andrew, Fan, Yibo
core   +1 more source

Investigating the performance of seals using photoelastic experimental hybrid method and finite element analysis

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
In this paper, performance behavior of seals under compression and various hydraulic pressures were investigated. Two approaches (experimental and numerical) have been used.
Bruno R. MOSE   +2 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Glyptic Findings with Anatolian Hieroglyphs from Kilis – Oylum Höyük

open access: yesAnadolu Araştırmaları
The archaeological excavations at Oylum Höyük were started in 1987 by Prof. Dr. Engin Özgen. Since 2012, they have been carried out by Prof. Dr. Atilla Engin. During these excavations, a total of eight seals or seal impressions with Anatolian hieroglyphs
Metin Alparslan
doaj   +1 more source

Seals, contracts and tokens in the Balkans Early Neolithic: where in the puzzle

open access: yesDocumenta Praehistorica, 2003
Paper discusses Early Neolithic seals, contracts and tokens in the context of Neolithization processes in southeastern Europe. Paper analyses the assemblages, contexts and the patterns of regional and interregional distributions.
Mihael Budja
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

A remotely operated blood sampling and sedative administration device in freely moving pinnipeds

open access: yesMethods in Ecology and Evolution
A remotely operated device for use with freely moving pinnipeds was designed and successfully developed for the collection of blood samples and the administration of sedatives via an indwelling, venous catheter. The performance of the sampler, called the
Joanna L. Kershaw   +10 more
doaj   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

LAS ESTRUCTURAS BASADAS EN LA INSTITUCIÓN COMO DETERMINANTES DE LA CONFIANZA HACIA LA BANCA ELECTRÓNICA

open access: yesRevista de Estudios Empresariales. Segunda Época, 2014
Information asymmetry is a problem that affects to the trust in the electronic markets, especially in the case of the electronic banking. A possible solution is to generate trust by means of structures and norms generating “institution-based” trust.
Francisco Muñoz Leiva   +2 more
doaj  

Description of the Pumping Rate of Shaft Counterfaces in the Sealing System Radial Lip Seal Using the 3D Parameters of ISO 25178

open access: yesTribology Online, 2016
The sealing system radial lip seal represent a complex tribological system with high requirements to be fulfilled over a long time. The surface texture of shaft counterface has a great influence on the performance of radial lip sealing system.
Cornelius Fehrenbacher   +3 more
doaj   +1 more source

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