Results 31 to 40 of about 22,711 (254)

Sound Absorption of Microperforated Panel Made from Coconut Fiber and Polylactic Acid Composite

Journal of Natural Fibers, 2022
This paper highlights the sound absorption performance of microperforated panel (MPP) made from coconut fiber and polylactic acid (PLA) composite named as biocomposite microperforated panel (BMPP).
Desmond Daniel Chin Vui Sheng, Musli Nizam Bin Yahya, Nazli Bin Che Din   +2 more
doaj   +1 more source

Improved sound absorption with 3D-printed micro-perforated sandwich structures

Journal of Materials Research and Technology
The micro-perforated sandwich structure based on triply periodic minimal surfaces (TPMS) is a lightweight, high-strength and multi-functional structure, which integrates heat exchange, impact resistance, energy absorption, etc., and has been widely used ...
Peng-Fei Zhang, Zhong-Hua Li, Yu-Jun Zhou, Qi-Fei Zhang, Bin Liu, Fei Liu, Si-Chen Pei, Ke Shi, Pei-kang Bai   +8 more
doaj   +1 more source

Research on the sound absorption characteristics of porous metal materials at high sound pressure levels

Advances in Mechanical Engineering, 2015
Porous metal materials are widely used in noise control with high sound pressure applications such as aircraft engine liners and combustion chambers for rocket engines due to their excellent performance of sound absorption characteristics and ...
Xiaopeng Wang, Yinggang Li, Tianning Chen, Zhiping Ying   +3 more
doaj   +1 more source

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

Advanced 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, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Sound absorption of warp knitted spacer fabrics based on knit structure and nanofiber enhancement

Journal of Industrial Textiles, 2022
In this work, the sound absorption properties of warp knitted spacer fabrics enhanced with nanofiber were studied. The angle of connecting yarns at two different spacing was considered as knit structure variable. Also, the effect of layering on the sound
M Davoudabadi Farahani, M Jamshidi Avanaki, Ali AA Jeddi   +2 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Topology optimization of multi-material acoustic metamaterials for low-frequency and broadband sound absorption

Materials & Design
This paper uses a non-gradient topology optimization method for designing multi-material acoustic metamaterials with low-frequency and broadband sound absorption performance.
Feifei Feng, Lei Diao, Chuan He, Meng Tao   +3 more
doaj   +1 more source

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

Modular Critical Element Recycling Platform Using a Nanoporous Additively Manufactured Gyroid

Advanced Engineering Materials, EarlyView.
A modular recycling platform integrates 3D‐printed nanoporous gyroid structures to enable efficient critical element recovery. This system utilizes a hierarchical architecture, combining macroscopic channels with polymerization‐induced nanoscale porosity. By systematically tuning structural wall thickness and resin formulation, the platform achieves an
Xiangyu Gao, Keldy Mason, Mert Gülçür, Rachel Paddock‐Lamb, Prince Alvin Fofanah, Zachariah A. Page, Michael Cullinan   +6 more
wiley   +1 more source

Noise Reduction Characteristics of Porous Composite Acoustic Absorbers With Adjustable Pore Structure Based on Numerical Investigation

Shock and Vibration
In response to the increasingly pressing issue of road traffic noise pollution, this paper draws on the sound absorption mechanisms of porous media to develop a class of composite porous sound-absorbing materials with a graded, adjustable pore ...
Zhenhua Hou, Zhenfu Zhou, Ke Zhang, Xingyu Chen, Libo Wang   +4 more
doaj   +1 more source