New Technique for “Cullet” Generation of Glass Bottles by Using Underwater Shockwave

2006 ◽  
Vol 326-328 ◽  
pp. 1551-1554
Author(s):  
Hidetoshi Sakamoto ◽  
Shinjiro Kawabe ◽  
Kazuo Satoh ◽  
Masahiro Himeno ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Fracture Process ◽  
Image Converter ◽  
Glass Bottle ◽  
Underwater Shock Wave ◽  
Application Technique ◽  
System A ◽  
Underwater Shock ◽  
Glass Bottles

As the application technique for glass bottle’s recycling system, a new “Cullet” generation method by using underwater shock wave was proposed. This small fragmentation technique of glass bottles has a lot of excellent advantages such as the simplification of process by simultaneous cleaning and crushing operation, the high collect rate of “Cullet” and so on. In this study, the relation between of the explosive conditions and “Cullet” sizes were clarified and the high speed fracture process of glass bottle was observed by framing photograph of high speed image converter.

High-Speed Fracture Phenomena of Glass Bottle by Underwater Shock Wave

2010 ◽  
Vol 654-656 ◽  
pp. 2543-2547 ◽  
Author(s):  
Hidetoshi Sakamoto ◽  
Shinjiro Kawabe ◽  
Yoshifumi Ohbuchi ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Efficient Method ◽  
Fracture Mechanism ◽  
High Speed ◽  
Glass Bottle ◽  
Underwater Shock Wave ◽  
Glass Containers ◽  
Wave Technique ◽  
Underwater Shock ◽  
Glass Bottles

The high-speed fracture phenomena of glass bottles by using underwater shock wave technique for recycling the glass containers were discussed. The proposed technique is an efficient method for the crushing of glass bottles. In this study, the influence of various explosive conditions, that is, the explosive shape, set position, amount, the bottle size and the contents of bottle, on the cullet size, which is the crushed glass fragments, was studied. Furthermore, the behaviors of underwater shock wave were observed by high-framing photograph and the high-speed fracture mechanism was clarified.

Observation of High Speed Glass Bottle Fracture Behaviors by Underwater Shockwave

2012 ◽  
Vol 586 ◽  
pp. 151-155
Author(s):  
Kosuke Nagata ◽  
Hidetoshi Sakamoto ◽  
Yoshifumi Ohbuchi ◽  
Hiroyuki Kuramae ◽  
Eiji Nakamachi
Keyword(s):  
High Speed ◽  
Fracture Process ◽  
Glass Bottle ◽  
Explosive Energy ◽  
Washing Process ◽  
Fracture Behaviors ◽  
Glass Bottles ◽  
Glass Recycling

This paper described new effective glass bottle fracture process for glass recycling by underwater shockwave. The high-speed fracture behaviors of glass bottles by explosive energy were discussed. In the proposed technique, the washing process can be skipped because the bottle crushing process execute in water. As a result, the recycling cost can be decreased. In order to clarify the behaviors of glass bottle fracture, the bottle was painted by 5 colors. The crushing experiment was executed under four explosive conditions. The influence of various explosive conditions on the cullet sizes were calcified by using painted bottle.

A Study of Developing Composite Material of Penetrated Diamond Particles Into Metal Plate

2009 ◽  
Author(s):  
Keijiro Nishi ◽  
Shigeru Tanaka ◽  
Shigeru Itoh
Keyword(s):  
Thermal Conductivity ◽  
Shock Wave ◽  
Composite Material ◽  
High Speed ◽  
High Hardness ◽  
Optical Microscope ◽  
Metal Plate ◽  
Underwater Shock Wave ◽  
Diamond Particles ◽  
Underwater Shock

An explosive welding technique which uses underwater shock wave to weld thin aluminum plate has been studied and the technical advantages were reported. In this research, we propose a method to produce a composite material using an underwater shock wave generated by detonation of explosive. In the production process, a metal plate (flyer plate) accelerates to a high speed by the underwater shock wave, and collided with diamond particles and penetrated the metal plate. Diamonds were used as the particles and aluminum plates (A1050) as the flyer plates. Diamond has high hardness and excellent thermal conductivity, therefore diamond should provide improvement in the thermal conductivity of the composite material. From recovered sample, the multilayer joined surface including diamond particles was observed using an optical microscope. The production of the pipe of composite materials was attempted using this technique as the application. Details of the experimental methods and results are reported in this paper.

Exfoliation of Marine Organisms Technology by Using Underwater Shock Wave

2005 ◽  
Author(s):  
Toshiaki Watanabe ◽  
Hirofumi Iyama ◽  
Ayumi Takemoto ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Marine Organisms ◽  
High Speed Camera ◽  
Sluice Gate ◽  
Underwater Shock Wave ◽  
Manual Operation ◽  
Fluid Resistance ◽  
Personnel Expenses ◽  
Underwater Shock

Adhesion problem of marine organisms often becomes a problem, in the case of ship, marine floating construction and sluice gate of power plant. These make fluid resistance of a hull increase, cause a buoyancy fall, or cause reducing coolant etc. Although these are chiefly removed by manual operation now, immense expense and immense labors, such as personnel expenses and time and effort, are needed. We tried application of an underwater shock wave, in order to solve these problems. Interference of a shock wave and the mechanism of marine organisms exfoliation were explored using the explosive and PMMA plate, which imitated a marine organisms adhesion. The process of exfoliation of organisms from PMMA plate was observed by using of the high-speed camera.

Basic Study on the Crushing of Frozen Soil by Shock Loading

2007 ◽  
Author(s):  
Toshiaki Watanabe ◽  
Hironori Maehara ◽  
Masahiko Otsuka ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Shock Loading ◽  
Underwater Explosion ◽  
Frozen Soil ◽  
High Speed Camera ◽  
Underwater Shock Wave ◽  
Basic Study ◽  
Underwater Shock ◽  
A New Technique

The aim of study is to confirm a new technique that can crush the frozen soil and/or ice block using underwater shock wave generated by the underwater explosion of explosive. This technique can lead to the earlier sowing, which can have the larger harvest because the duration of sunshine increases. Especially, in Hokkaido prefecture, Japan, if the sowing is carried out in April, we can expect to have 150% of harvest in the ordinary season. This technique is effective against the cold regions. For example, Korea, China, Mongolia, Russia, Norway, and Sweden, etc. At first, we carried out experiments usung a detonating fuse and ice block. The process of ice breaking was observed by means of a high-speed camera. In order to check about that influence we tried to give an actual frozen soil a shock wave.

Investigation of a converging underwater shock wave using high-speed photography

1995 ◽  
Author(s):  
Shigeru Itoh ◽  
S. Kubota ◽  
Shirou Nagano ◽  
I. Morita ◽  
A. Chiba ◽  
...  
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
High Speed Photography ◽  
Underwater Shock Wave ◽  
Underwater Shock

A Deburring Process Performed by Underwater Shock Wave

2011 ◽  
Vol 673 ◽  
pp. 271-274 ◽  
Author(s):  
Kazumasa Shiramoto ◽  
Junki Shimizu ◽  
Akiyoshi Kobayashi ◽  
Masahiro Fujita
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Present Report ◽  
Shock Pressure ◽  
Normal Operation ◽  
Underwater Shock Wave ◽  
Water Flows ◽  
Underwater Shock ◽  
Machining Operations ◽  
Equipment Performance

A burr is most commonly created after machining operations, such as drilling. Drilling burrs, for example, are common when drilling almost any material. When burrs are broken during the operation of a machine including the parts with the created burrs, the broken piece is in fear of disturbing normal operation or damaging the parts of the machine, so that the sufficient deburring is requested because it can affect equipment performance, reliability, and durability. Several deburring method have been developed up to date. In the present report, we proposed a deburring method by means of applying underwater shock wave. The method is as follows: after all entrance of holes is closed with seal tape, the equipment is submerged, so that all passages for running fluid are filled with air. The explosive is set under water near the entrance of the main hole. As soon as the explosive is detonated, the underwater shock wave generated at the detonation point arrives at the entrance of the hole and breaks through the tape. The water flows into the hole with a high speed. The burr is broken by water hummer action of high speed. In the present investigation, the experiments of deburring are performed under some setting conditions of explosive. It is found by experimental results, that the burr is sufficiently removed with the newly proposed method. When the shock pressure is sufficiently high at the entrance of hole, the burr is broken surface is smooth as polished one. When the shock pressure is not sufficiently high, the broken surface of the burr is notched.

Glass Bottle Fracture Behavior by Underwater Shock-Wave - Effect of Micro-Bubble on the Fracture Behavior -

2018 ◽  
Vol 774 ◽  
pp. 303-306
Author(s):  
Yoshifumi Ohbuchi ◽  
Sota Sugahara ◽  
Shigeru Tanaka ◽  
Shinichi Enoki ◽  
Genj Hotta ◽  
...  
Keyword(s):  
Shock Wave ◽  
Fracture Behavior ◽  
Experimental Result ◽  
Glass Bottle ◽  
Underwater Shock Wave ◽  
Small Glass ◽  
Micro Bubble ◽  
Underwater Shock ◽  
The One ◽  
The Impact

In order to promote the recycling of the one way glass bottles, the impact fracture by using the pulse power underwater shock-wave with micro bubble was examined. It is reported that the pressure of underwater shock-wave with micro-bubble increases. From the experimental result, the glass bottle‘s crushed experiment was executed in the water with micro-bubble. As a result, the small glass fragments (Cullet) increased and it was shown that the micro-bubble in the water promoted the bottle fracture.

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