Results 51 to 60 of about 232,569 (291)
Model of acoustic emission signal at self‐accelerated crack development
Aviation, 2005 The article is devoted to the theoretical analysis the problem of acoustic emission signals application for the detection of self‐accelerated crack development.
Vitalii Babak +2 more
doaj +1 more source
Acoustic based safety emergency vehicle detection for intelligent transport systems [PDF]
, 2009 A system has been investigated for the detection of incoming direction of an emergency vehicle. Acoustic detection methods based on a cross microphone array have been implemented.
Atmoko, H +4 more
core
Advanced Functional Materials, EarlyView.Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng +9 more
wiley +1 more source
IET Radar, Sonar & NavigationThe low frequency line spectrum noise radiated by ships has strong stability and is difficult to eliminate, which is the key information required for passive signal detection.
He Li +4 more
doaj +1 more source
Sensors, 2023 A resonant acoustic wave detector combined with Fabry–Pérot interference (FPI) and piezoelectric (PE) effects based on a polyvinylidene fluoride (PVDF) piezoelectric film was proposed to enhance the ability of the sensor to detect acoustic signals in a ...
Qingkai Yao +4 more
doaj +1 more source
Studying and modeling of submerged aquatic vegetation environments seen by a single beam echosounder
, 2012 International audienceFor both environmental and economic reasons, it is important to map the distribution of submerged aquatic vegetation. Acoustic technologies seem to be the more efficient and cost effective methods for that.
Le Caillec, Jean-Marc +4 more
core +3 more sources
Acoustic behavior of melon-headed whales varies on a diel cycle. [PDF]
, 2015 Many terrestrial and marine species have a diel activity pattern, and their acoustic signaling follows their current behavioral state. Whistles and echolocation clicks on long-term recordings produced by melon-headed whales (Peponocephala electra) at ...
Baumann-Pickering, Simone +4 more
core +2 more sources
Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization
Advanced Functional Materials, EarlyView.Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao +12 more
wiley +1 more source
Denoising of MEMS Vector Hydrophone Signal Based on Empirical Model Wavelet Method
Proceedings, 2019 Underwater acoustic technology is a major method in current ocean research and exploration, which support the detection of seabed environment and marine life.
Huichao Yan, Linmei Zhang
doaj +1 more source
Research on Transformer Noise Suppression Based on Redundant Convolutional Encoder Decoder
Zhongguo dianli, 2023 The acoustic signal generated during the operation of the transformer is an important basis for evaluating the operation status of the transformer and the noise level of the substation.
Quanjin XIN +4 more
doaj +1 more source