|
|
|
|
|
Aleksey Marchenko and Nataliya Marchenko
Changes in the masses of icebergs due to deterioration processes affect the drift of icebergs and should be taken into account when assessing iceberg risks in the areas of offshore development. In 2022 and 2023, eight laboratory experiments were carried ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Natalie S. Grigorieva, Fiodor F. Legusha, Dmitry V. Nikushchenko and Kirill S. Safronov
A numerically efficient technique is presented for computing the backscattered fields from two spherical targets embedded in an underwater sediment. The bottom is assumed to be a homogeneous liquid attenuating half-space. The transmitter/receiver is loca...
ver más
|
|
|
|
|
|
|
|
|
|
|
|
Andreas P. Mayer, Elena A. Mayer, Markus Mayer, Werner Ruile, Vikrant Chauhan, Thomas Forster and Karl C. Wagner
In the framework of electro-elasticity theory and the finite element method (FEM), a model is set up for the computation of quantities in surface acoustic wave (SAW) devices accounting for nonlinear effects. These include second-order and third-order int...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yu Gai, Qi Tan, Yating Zhang, Zhengyi Zhao, Yiguang Yang, Yanyan Liu, Ruitao Zhang and Jianquan Yao
Uplink communication across the water?air interface holds great potential for offshore oil surveys and military applications. Among the various methods available for implementing uplink communication, translational acoustic-RF (TARF) communication stands...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kangkang Shi, Dongsheng Li, Dongsen Hu, Qi Shen and Guoyong Jin
The acoustic absorption characteristics of anechoic coatings attached to the surface of underwater vehicles are closely related to their acoustic stealth. Owing to the essential property of local resonance, the narrow sound-absorption band cannot meet th...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nikolay Kanev
Metasurfaces formed by monopole and dipole resonators are studied theoretically. The monopole resonators are Helmholtz resonators or membranes vibrating on the first eigenfrequency; the dipole ones are spheres on springs or membranes vibrating on the sec...
ver más
|
|
|
|
|
|
|
|
|
|
|
Chang Shi, Xide Cheng, Zuyuan Liu, Kunyu Han, Penghui Liu and Long Jiang
When a vehicle moves underwater, disturbance is generated and a wake remains that destroys the original free surface and produces a new wake. In order to study the mechanism and characteristics of the wave-making wake generated by the maneuvering motion ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jianbin Li, Yi He, Qian Li and Zhen Zhang
The detection of bolt loosening using vibro-acoustic modulation (VAM) has been increasingly investigated in the past decade. However, conventional nonlinear coefficients, derived from theoretical analysis, are usually based on the assumption of ideal wav...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jinchao Wang, Junfeng Huang, Hui Min, Feng Wang, Yiteng Wang and Zengqiang Han
A weak interlayer is the key factor in controlling slope stability. It is of great significance to effectively identify the weak interlayer in the study of spatial and temporal distribution law and the internal structure characteristics of a landslide. C...
ver más
|
|
|
|
|
|