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Study & Modeling of 'Acoustic Matching Layers' for Ultrasound Imaging Probes Through Pulse-Echo FEM Simulation - new

L. Spicci[1]
[1]Esaote SpA, Florence, Italy

Ultrasound Imaging probes are specific devices that require a very detailed design of acoustic impedance match for the stack of layers that form the ...

Utilization of COMSOL Multiphysics® Java API for the Integration of Composite Material Properties Through a Customized User Interface - new

R. Malav[1]
[1]Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

Introduction: Usage of Composite Materials properties is rapidly gaining acceptance in various industries such as aircraft manufacturing, automotive, ...

Simulation of Acoustical Transfer Paths for Active Noise Control

L. Fromme [1], J. Waßmuth [1], D. Wehmeier [1],
[1] Bielefeld University of Applied Sciences, Bielefeld, Germany

The knowledge of the acoustical transfer paths in active noise control systems is very important for the performance of the system. Unfortunately, ...

旋转器结构单元尺寸对其工作带宽的影响

屈治国 [1], 张秀海 [1],
[1] 热流科学与工程教育部重点实验室,西安交通大学能动学院,西安,中国

引言 超材料是一类具有天然材料所不具备的特殊性质的材料[1-3]。近年来,有学者开始研究超材料对波的旋转效应,这一研究有着工程应用价值。江雪等[4]设计并实验验证了一种声场旋转器。江雪等[5]进一步研究了声场旋转器整体尺寸大小对其工作带宽的影响及声场旋转器中心处的旋转角度与其结构单元长度的关系 ...

Numerical Modelling of Wave Propagation in Particulate Composites

P. S. K. Mylavarapu, and S. Boddapati
Defence Metallurgical Research Laboratory

Syntactic foams are hollow particle filled composites that have recently emerged as attractive materials for use in advanced structural applications in ...

Design of a Self-Recharging Untethered Mobile Inspection Tool inside a Pipeline

W. Chalgham [1], A. C. Seibi [1],
[1] University of Louisiana at Lafayette, Lafayette, LA, USA

Pipeline inspection tools present some limitations related to power supply which require recharging after each operation. Using batteries or tethered ...

Design Of Acoustic Metamaterials Based On The Concept Of Dual Transmission Line

A-S.Moreau[1], H.Lissek[1], and F. Bongard[2]
[1]Ecole Polytechnique Fédérale de Lausanne, Switzerland
[2]JAST SA, Antenna Systems, Lausanne, Switzerland

In this context, a one-dimensional acoustic transmission line, exhibiting metamaterial properties, is presented. It is composed of an acoustic ...

Simulation of Pearl-Chain Formation of Microparticles by Acoustic Standing Waves, including Inter-Particle Forces and Collisions

T. Baasch [1], J. Dual [1],
[1] ETH Zurich, Insitute for Mechanical Systems, Zurich, Switzerland

Acoustic standing waves can be used to manipulate micrometer sized particles, cells and organisms. In most applications these objects are driven ...

COMSOL Multiphysics® Simulation of Ultrasonic Energy in Cleaning Tanks - new

L. Zhong[1]
[1]Seagate Technology, Bloomington, MN, USA

Ultrasonic based cleaning process, widely used in various industries, mainly utilizes the cavitation effect to achieve contamination removal. For a ...

Support-Q Optimisation of a Trapped Mode Beam Resonator - new

T. H. Hanley[1], H. T. D. Grigg[1], B. J. Gallacher[1]
[1]Newcastle University, Newcastle-Upon-Tyne, UK

Introducing a disorder into a finite periodic oscillatory system induces the presence of a 'trapped mode': a mode in which the displacement field is ...