Results 61 to 70 of about 40,603 (292)

Multimodal Data‐Driven Microstructure Characterization

Advanced 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, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Transcranial Focusing of Ultrasonic Vortices by Acoustic Holograms

Physical Review Applied, 2020
This research was supported by the Spanish Ministry of Science, Innovation, and Universities through "Juan de la Cierva-Incorporacion" Grants No. IJC2018-037897-I and No. PID2019-111436RB-C22, by the Agencia Valenciana de la Innovacio through Grants No. INNVAL10/19/016, No. INNVA1/2020/92, and No.
Sergio Jiménez-Gambín, Noé Jiménez, Francisco Camarena   +2 more
openaire   +3 more sources

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

Advanced 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, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Planer-structure focusing lens for acoustic microscope.

Journal of the Acoustical Society of Japan (E), 1985
A planar-structure acoustic focusing lens proposed by the authors is applied successfully to the scanning acoustic microscope as a substitute for the conventional concave lens. The lens is composed of a number of concentric annular grooves of uniform depth formed on the radiation plane according to the theory of a Fresnel zone plate.
Yamada, Ken, Shimizu, Hiroshi
openaire   +2 more sources

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

Advanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle, María Ángeles Navacerrada, Johan Christensen, Carlos González   +3 more
wiley   +1 more source

Acoustic focusing effect of composite metamaterial column in air

Journal of Measurement Science and Instrumentation, 2017
The acoustic focusing effect of metamaterial has a wide range of applications in medicine,acoustic imaging,signal detection,etc.This paper presents an acoustic metamaterial applied to the acoustic focusing effect.The formation of acoustic metamaterial is
HAN Jian-ning, ZHEN Wen-xiang, QIN Jia-jie, WU Yu-peng, TANG Shuai, Key Laboratory of Instrumental Science & Dynamic Measurement   +5 more
doaj  

Acoustic Transmission Characteristics Based on H-Type Metamaterials

IEEE Access, 2019
To achieve the artificial manipulation of the acoustic wave front, and to produce high-efficiency acoustic focusing effect, this paper designed an $H$ -type locally resonant metamaterial structure based on a two-dimensional three-component local ...
Shuai Tang, Jianning Han
doaj   +1 more source

Quasi-flat high-index acoustic lens for 3D underwater ultrasound focusing [PDF]

, 2022
We report a quasi-flat and sub-wavelength acoustic lens built using a soft matter process for broadband ultrasonic 3D focusing in water. By using a simple emulsion templating method, a soft porous material with a high acoustic index relative to water (∼5)
BRUNET, Thomas, LOMBARD, Olivier, MONDAIN-MONVAL, Olivier, Thomas Brunet, KUMAR, Raj, PONCELET, Olivier, Olivier Lombard, Olivier Poncelet, Raj Kumar, Olivier Mondain-Monval   +9 more
core   +1 more source

Experimental Characterization of Mycelium‐Based Composites Under Multiple Loading Conditions

Advanced Engineering Materials, EarlyView.
This study examines the mechanical response of mycelium‐based composites under compression, shear, and tension using mechanical testing and imaging methods. The comparison between unpressed and hot‐pressed specimens shows that hot pressing is associated with higher compression and shear stiffnesses.
Shaghayegh Elahi, Kimiya Tajik, Harvey Shaw, Matti Isakov, Sami Pajunen, Lauri Rautkari   +5 more
wiley   +1 more source

Performance and influencing factors of acoustic grating based on signal enhancement

Xibei Gongye Daxue Xuebao
In the acoustic signal receiving section of underwater vehicle, an effective measure to improve surface acoustic impedance and reduce signal attenuation is to cover acoustic barrier plate of hydrophone array with high impedance material (signal ...
YANG Lei, CHEN Kean, LYU Ning, TIAN Fenghua, ZHANG Jiyang, LIU Yidong   +5 more
doaj   +1 more source