Coatings for Mitigating the Effects of Underwater Shock Waves on Structures

2017 ◽  
pp. 321-335 ◽  
Author(s):  
Serge Abrate
Keyword(s):  
Shock Waves ◽  
Underwater Shock

scholarly journals Study of Ho:YAG Laser Generated Underwater Shock Waves and Cavity Bubble for Revascularization Therapy

2000 ◽  
Author(s):  
S. H. R. Hosseini ◽  
T. Hirano ◽  
O. Onodera ◽  
K. Takayama
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Optical Fiber ◽  
Optical Fibers ◽  
Early Stage ◽  
Underwater Shock Wave ◽  
Ho:Yag Laser ◽  
Direct Laser ◽  
Order Of Magnitude ◽  
Underwater Shock

Abstract For applying shock waves to precise medical procedures like neurosurgery, a reliable generation of micro shock waves is required. Such sensitive applications make limits on usage of conventional underwater shock wave sources like Extracoporeal Shock Waves ESW [1] or micro explosives [2]. In the present study a Q-switched Ho:YAG laser and an optical fiber are used. Advantages of this method over previous shock wave sources are two order of magnitude reduction in focusing area if compared with ESW and elimination of product gases of micro explosives. Nakahara and Nagayama [3] studied underwater shock waves emanated from surface of an optical fiber by pulse Nd:YAG laser input using shadowgraph technique. Their qualitative study limited to visualization of shock waves at its early stage. The present research aims to clarify quantitatively process of the shock wave generation by direct laser beam irradiation through optical fibers, growth and behavior of generated cavities, and structure of heat induced flow in front of the optical fiber.

Relaxation Effects in the Propagation of Underwater Shock Waves

1980 ◽  
pp. 177-183
Author(s):  
T. N. Fedoseeva ◽  
F. E. Fridman ◽  
V. N. Goldberg ◽  
I. G. Zarnitsina
Keyword(s):  
Shock Waves ◽  
Relaxation Effects ◽  
Underwater Shock

Electrical wire explosion as a source of underwater shock waves

2021 ◽  
Author(s):  
Huantong Shi ◽  
Guofeng Yin ◽  
Xingwen Li ◽  
Jian Wu ◽  
Anthony B Murphy ◽  
...  
Keyword(s):  
Shock Waves ◽  
Wire Explosion ◽  
Electrical Wire ◽  
Electrical Wire Explosion ◽  
Underwater Shock

UNDERWATER SHOCK WAVES IN MEDICAL APPLICATIONS

1992 ◽  
pp. 843-846
Author(s):  
Frederick L. YARGER ◽  
Fernando E. PRIETO ◽  
Achim M. LOSKE
Keyword(s):  
Shock Waves ◽  
Medical Applications ◽  
Underwater Shock

Transient Response of Submerged Elastic Structures Subject to Underwater Shock Waves

2010 ◽  
Author(s):  
Zhanke Liu ◽  
Yin L. Young
Keyword(s):  
Shock Waves ◽  
Case Studies ◽  
Transient Response ◽  
Elastic Parameter ◽  
Elastic Structures ◽  
Inertial Parameter ◽  
Dimensional Parameters ◽  
Underwater Shock

This paper presents the transient response of submerged elastic structures subject to underwater shock waves. Two fundamental effects are investigated, namely, the inertial and elastic effects, characterized by two non-dimensional parameters, namely, the inertial parameter M and the elastic parameter K. Case studies are provided with physical and mathematical interpretations of the results.

On Generation of Ultra-High Pressure by Converging of Underwater Shock Waves

1998 ◽  
Vol 120 (1) ◽  
pp. 51-55 ◽  
Author(s):  
S. Itoh ◽  
S. Kubota ◽  
S. Nagano ◽  
M. Fujita
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Detonation Wave ◽  
Simulation Method ◽  
Ceramic Materials ◽  
Underwater Shock Wave ◽  
Water Chamber ◽  
Metallic Compounds ◽  
Underwater Shock ◽  
Graph System

The characteristics of a new assembly for the shock consolidation of difficult-to-consolidate powders, such as inter-metallic compounds or ceramic materials, were investigated by both the experimental method and numerical simulation method. The assembly consists of an explosive container, a water chamber, and a powder container. Once the explosive is detonated, a detonation wave occurs and propagates, and then impinges on the water surface of the water chamber. After that, there occurs immediately an underwater shock wave in the water chamber. The underwater shock wave interacts with the wall of the chamber during its propagation so that its strength is increased by the converging effect. We used the usual shadow graph system to photograph the interaction process between detonation wave and water. We also used a Manganin piezoresistance gage to measure the converged pressure of the conical water chamber. Finally, we numerically investigated, in detail, the converging effects of the various conical water chambers on the underwater shock waves. The experimental results and the correspondingly numerical results agree quite well with each other.

318 Development of Plankton Treatment Technology using Underwater Shock Waves

2009 ◽  
Vol 2009.19 (0) ◽  
pp. 312-315
Author(s):  
Minoru SUZUKI ◽  
Yasuo ISHIKAWA ◽  
Hiroyasu TSUZUKI ◽  
Sayaka YAMAGUCHI ◽  
Tsutomu CHIJIIWA
Keyword(s):  
Shock Waves ◽  
Treatment Technology ◽  
Underwater Shock
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