Results 81 to 90 of about 302,242 (373)
Aviation, 2013 The paper considers the results of modelling acoustic emission signals that form under variations in the rotational speed of a friction pair made of a composite material.
Sergey Filonenko, Aleksandr Kosmach
doaj +1 more source
Advanced Materials, EarlyView.A novel dual‐modification approach, ─NH₂ groups modification and Cu ions coordination, is first imposed on MIL‐125, which greatly improved carrier separation due to the enhanced piezoelectricity of MOFs caused by polarity alteration, leading to exceptional high piezo‐photocatalytic hydrogen production.
Haijun Hu +11 more
wiley +1 more source
Relationship between ae signal strength and absolute energy in determining damage classification of concrete structures [PDF]
, 2006 The most efficient tools in real monitoring system is acoustic emission (AE). This technique can be used to identify the damage classifications in RC structure.
Abdullah, Siti Radziah +2 more
core +2 more sources
Intelligent location of simultaneously active acoustic emission sources: Part I [PDF]
arXiv, 2007 The intelligent acoustic emission locator is described in Part I, while Part II discusses blind source separation, time delay estimation and location of two simultaneously active continuous acoustic emission sources. The location of acoustic emission on complicated aircraft frame structures is a difficult problem of non-destructive testing.
arxiv
Gravitational Waves and Black Hole perturbations in Acoustic Analogues [PDF]
AVS Quantum Science, Vol.7, Issue 1, (2025)Phonons in Bose-Einstein condensates propagate as massless scalar particles on top of an emergent acoustic metric. This hydrodynamics/gravity analogy can be exploited to realize acoustic black holes, featuring an event horizon that traps phonons. We show that by an appropriate external potential, gravitational wave-like perturbations of the acoustic ...
arxiv +1 more source
Smart Dust for Chemical Mapping
Advanced Materials, EarlyView.This review article explores the advancement of smart dust networks for high‐resolution spatial and temporal chemical mapping. Comprising miniature, wireless sensors, and communication devices, smart dust autonomously collects, processes, and transmits data via swarm‐based communication.
Indrajit Mondal, Hossam Haick
wiley +1 more source
Study of response regularity of acoustic emission in gas jet orifice
Gong-kuang zidonghua, 2016 In order to prevent danger of coal and gas outburst in process of rock cross-cut coal uncovering, tests and analysis on acoustic emission in rock cross-cut coal uncovering process in a coal mine were conducted based on acoustic emission monitoring system.
LI Guo’ai +4 more
doaj +1 more source
Modal analysis of high frequency acoustic signal approach for progressive failure monitoring in thin composite plates [PDF]
, 2012 During the past few decades, many successful research works have evidently shown remarkable capability of Acoustic Emission (AE) for early damage detection of composite materials.
Epaarachchi, J. +2 more
core
Localization algorithm for acoustic emission
Physics Procedia, 2010 AbstractIn this paper, an iterative algorithm for localization of acoustic emission (AE) source is presented. The main advantage of the system is that it is independent of the “ability” in the determination of signal level to triggering the signal by the researcher.
V. Salinas +3 more
openaire +2 more sources
Intelligent location of simultaneously active acoustic emission sources: Part II [PDF]
arXiv, 2007 Part I describes an intelligent acoustic emission locator, while Part II discusses blind source separation, time delay estimation and location of two continuous acoustic emission sources. Acoustic emission (AE) analysis is used for characterization and location of developing defects in materials.
arxiv