Results 41 to 50 of about 18,801 (297)

Non-Extensive Statistical Mechanics in Acoustic Emissions: Detection of Upcoming Fracture in Rock Materials

open access: yesApplied Sciences, 2023
Acoustic emission (AE), recorded during uniaxial compressive loading with constantly increasing stress and stepped stress increments until the fracture of prismatic marble specimens, were analyzed in terms of non-extensive statistical mechanics (NESM ...
Andronikos Loukidis   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Deformation processes and emissions of acoustic impulses at the uniaxial loading of selected rocks from the Czech part of the Upper Silesian Basin [PDF]

open access: yesActa Montanistica Slovaca, 1998
The deformation and induced acoustic emission during uniaxial loading were studied. Three main phases were distinguished during the whole deformation process: the initial one, in which the adjustment of rock specimen to the loading frame occurred, the ...
Konečný Petr
doaj  

Towards an intraoperative feedback system for laparoscopic access with the Veress needle

open access: yesCurrent Directions in Biomedical Engineering, 2021
About 50 % of complications during laparoscopy occur when surgical access is created. The Veress needle and proposed technical alternatives do not provide reliable information to support the surgeons in guiding the needle, or the feedback is not clearly ...
Spiller Moritz   +6 more
doaj   +1 more source

Multimodal Data‐Driven Microstructure Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang   +4 more
wiley   +1 more source

Influence of EGR and Acoustic Waves on Particles and Other Emissions of IC Engine Powered with Diesel and RME Fuels

open access: yesFuels
To achieve the goal of climate neutrality set by the European Union, it is important to find an efficient strategy to simultaneously lower nitrogen oxide, carbon monoxide, and particle emissions.
Sai Manoj Rayapureddy, Jonas Matijošius
doaj   +1 more source

Using Otoacoustic emissions as a biometric

open access: yes, 2004
This paper presents research into using otoacoustic emissions (OAE) as a biometric. OAE are a group of sounds emitted by the cochlea of the ear. The main types are spontaneous OAE which are continuously emitted and the transient and distortion product ...
Matthew A. Swabey   +7 more
core   +1 more source

Observations of acoustic emission activity during gear defect diagnosis. [PDF]

open access: yes, 2003
It is widely recognised that acoustic emission (AE) is gaining ground as a non- destructive technique (NDT) for health diagnosis on rotating machinery.
Mba, David   +3 more
core   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Diesel engine fuel injection monitoring using acoustic measurements and independent component analysis [PDF]

open access: yes, 2010
Air-borne acoustic based condition monitoring is a promising technique because of its intrusive nature and the rich information contained within the acoustic signals including all sources.
Gu, Fengshou   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy