Results 41 to 50 of about 1,146,309 (300)

Assessing the sound insulation and thermal performance of a partition based on recycled materials as a sustainable retrofitting solution for buildings [PDF]

open access: yesE3S Web of Conferences
Global warming and carbon emissions force us to rethink the use of our resources in a circular way. Recycling of materials such as paper and bio-based products offers an economically viable and straightforward way to reuse waste products.
Garcia Jorge Joaquin   +2 more
doaj   +1 more source

Acoustic iridescence [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2011
An investigation has been undertaken into acoustic iridescence, exploring how a device can be constructed which alter sound waves, in a similar way to structures in nature that act on light to produce optical iridescence. The main construction had many thin perforated sheets spaced half a wavelength apart for a specified design frequency.
openaire   +2 more sources

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai   +2 more
wiley   +1 more source

Acoustic signatures of the seafloor: Tools for predicting grouper habitat [PDF]

open access: yes, 2006
Groupers are important components of commercial and recreational fisheries. Current methods of diver-based grouper census surveys could potentially benefit from development of remotely sensed methods of seabed classification.
Eklund, Anne-Marie   +3 more
core  

Laser Doppler Velocimetry for Joint Measurements of Acoustic and Mean Flow Velocities : LMS-based Algorithm and CRB Calculation

open access: yes, 2009
This paper presents a least mean square (LMS) algorithm for the joint estimation of acoustic and mean flow velocities from laser doppler velocimetry (LDV) measurements.
Degroot, Anne   +3 more
core   +1 more source

Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations [PDF]

open access: yes, 2006
We show that full-image micro-PIV analysis in combination with images of transient particle motion is a powerful tool for experimental studies of acoustic radiation forces and acoustic streaming in microfluidic chambers under piezo-actuation in the MHz ...
Abbott   +32 more
core   +3 more sources

Acoustic Emission [PDF]

open access: yes, 2021
AbstractAcoustic emission (AE) is one of the most promising methods for structural health monitoring (SHM) of materials and structures. Because of its passive and non-invasive nature, it can be used during the operation of a structure and supply information that cannot be collected in real time through other techniques. It is based on the recording and
Aggelis, Dimitrios G.   +6 more
openaire   +2 more sources

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

Reverse Doppler effect in backward spin waves scattered on acoustic waves

open access: yes, 2009
We report on the observation of reverse Doppler effect in backward spin waves reflected off of surface acoustic waves. The spin waves are excited in a yttrium iron garnet (YIG) film. Simultaneously, acoustic waves are also generated.
A. A. Serga   +12 more
core   +1 more source

3D numerical simulation of hydro-acoustic waves registered during the 2012 negros-cebu earthquake [PDF]

open access: yes, 2019
The paper investigates on the hydro-acoustic waves propagation caused by the underwater earthquake, occurred on 6 February 2012, between the Negros and Cebu islands, in the Philippines.
Bellotti, Giorgio   +3 more
core   +1 more source

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