Results 81 to 90 of about 1,300 (175)

Rapid Morphological Changes in the Intertidal Zone of the Ganges‐Brahmaputra Delta Revealed by SWOT Altimetry Mission

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Intertidal zones of the Ganges‐Brahmaputra (GB) delta are among the most active coastal environments worldwide, and quantifying their morphological evolution remains challenging due to rapid change and scarce in situ observations. This study presents a satellite‐based direct quantification of intertidal sediment volume change in the Meghna ...
Nushrat Yeasmin, Laurent Testut, Valérie Ballu, Md Jamal Uddin Khan   +3 more
wiley   +1 more source

Rayleigh beam underwater metamaterial for low-frequency and broadband sound absorption

Materials Today Communications, 2023
Yu Liu, Boya Xiao, Kaiqi Yan, Jinju Liu, Meng Chen, Heng Jiang, Yuren Wang   +6 more
openaire   +1 more source

Heuristic algorithm-enhanced inverse design of deep-subwavelength hybrid metamaterials for ultra-broadband underwater sound absorption

Materials & Design
This study proposes a hybrid acoustic metamaterial (HAM) composed of four quasi-Helmholtz resonators (QHRs, with rubber liners and embedded necks) and one boundary-constrained viscoelastic material (BVM) arranged in parallel.
Ming Li, Fengxian Xin
doaj   +1 more source

Investigation of Acoustic Target Strength of a Cylindrical Shell Partially Covered with Anechoic Coating

水下无人系统学报
The primary structural configuration of underwater equipment consists of cylindrical shells. To study the characteristics of the acoustic target strength(TS) of a cylindrical shell partially covered with anechoic coatings, an anechoic coating with an ...
Qi MA, Shifeng NI, Hao GENG, Haibin YANG
doaj   +1 more source

Deep-subwavelength and hydrostatic-pressure-resistant meta-absorber for broadband low-frequency underwater sound

Applied Physics Express
By embedding center-supported graded-circular-plates (CS-GCPs) into an elastomer, a deep-subwavelength and hydrostatic-pressure-resistant meta-absorber was designed and manufactured for sound absorption (SA) under hydrostatic pressure.
Yanni Zhang, Manlin Tong, Xiaoting Rui, Guoping Wang, Fufeng Yang   +4 more
doaj   +1 more source

Porous AlPO4 ceramic with high strength and good acoustic performance prepared by direct foaming and gel-casting

Journal of Materials Research and Technology
Acoustic stealth of underwater vehicles demands sound insulation and decoupling materials (SIDM) with good acoustic performance, high strength, and relatively low acoustic impedance. To address this, low elastic modulus AlPO4 was selected as the backbone
Bingqing Zhao, Wei Xie, Hailong Wang, Huimin Xiang, Mingliang Li, Cheng Fang, Yanchun Zhou   +6 more
doaj   +1 more source

Study on Sound Field Properties of Parametric Array Under the Influence of Underwater Waveguide Interface Scattering Based on Non-Paraxial Model—Theory and Experiment

Journal of Marine Science and Engineering
This paper theoretically and experimentally studies the effect of underwater waveguide interface scattering on the nonlinear sound field characteristics of parametric array (PA) radiation.
Yuan Cao, Jie Shi, Jiangyi Zhang, Yuezhu Cheng, Haokang Shi   +4 more
doaj   +1 more source

Low-Frequency Sound Absorption Mechanism and Bidirectional Prediction of a Viscoelastic Rubber-Based Underwater Acoustic Coating Using Multimodal Deep Ensemble Learning. [PDF]

Polymers (Basel)
Zhang Z, Ye R, Liu N, Zhu G.
europepmc   +1 more source

Editorial for Special Issue "Research on Friction, Wear and Corrosion Properties of Materials". [PDF]

Materials (Basel)
Liu Y, Ma Y.
europepmc   +1 more source

A First-Order Shear Deformation Theory-Based Analytical Approach for Acoustic-Vibration Research of Rib-Stiffened PVC Foam Sandwich Structures with Reinforcing and Weakening Phases. [PDF]

Polymers (Basel)
Ma Z, Dai R, Zhou Z, Li Y.
europepmc   +1 more source