The Study about “Cullet” Generation Technique and Application for Recycling System by Using Underwater Shockwaves

2007 ◽  
Vol 566 ◽  
pp. 231-236 ◽  
Author(s):  
S. Kawabe ◽  
Hidetoshi Sakamoto ◽  
Masahiro Himeno ◽  
T. Ono ◽  
Shigeru Itoh
Keyword(s):  
Fracture Mechanism ◽  
High Speed ◽  
Fem Simulation ◽  
Recycling Process ◽  
Recycling System ◽  
Generation Technique ◽  
Washing Process ◽  
Glass Bottles ◽  
Photography Method

The high-speed fracture mechanism of glass bottles by using underwater shockwave and the recycling process by crushing the glass bottles were discussed. The proposed crushing process of the glass bottles can decrease the recycle cost by generating small fragments called "Cullet" and by executing the washing process at the same time as the crushing process. In this study, the relations between the "Cullet" sizes and various explosive conditions, that is, the distance from explosive, the amount, the velocity and the shapes of explosive, were clarified by using beer bottles, and the influence of the serial and concentric arrangements of two or more bottles on "cullet" sizes were examined. Moreover the behaviors of the underwater shockwave were observed by framing photograph method, shadowgraph method, illumination photography method and the FEM simulation was executed in order to make clear the high speed fracture mechanism.

“Glass Cullet” Generation Technique by Underwater Shockwave for Recycling System of Glass Bottles

2007 ◽  
Vol 353-358 ◽  
pp. 3120-3123
Author(s):  
Shinjiro Kawabe ◽  
Hidetoshi Sakamoto ◽  
Kazuo Satoh ◽  
Masahiro Himeno ◽  
Shigeru Itoh
Keyword(s):  
High Speed ◽  
Fem Simulation ◽  
Fracture Propagation ◽  
Cleaning Process ◽  
Glass Cullet ◽  
Underwater Shock Wave ◽  
Recycling System ◽  
Generation Technique ◽  
Underwater Shock ◽  
Glass Bottles

The high-speed fracture mechanics of glass bottles by using underwater shockwaves technique and its application for recycling system of glass bottles were discussed. The proposed small fragments, also called “Cullet”, generation technique can decrease the recycling cost by carrying out of crashing and cleaning process simultaneously. In this study, the effects of the explosive conditions and multi-specimen’s arrangements on the “Cullet” sizes were investigated and basic data for commercialization of this method were obtained. An FEM simulation and framing photograph were used to observe underwater shock wave and fracture propagation.

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.

Observation of High-Speed Fracture Phenomena of Glass Containers by Using Underwater Shockwave

2011 ◽  
Vol 673 ◽  
pp. 53-58 ◽  
Author(s):  
Shinjiro Kawabe ◽  
Hidetoshi Sakamoto ◽  
Yoshifumi Ohbuchi ◽  
Shigeru Itoh
Keyword(s):  
High Speed ◽  
Fem Simulation ◽  
High Speed Photography ◽  
Explosive Energy ◽  
Generation Technique ◽  
Glass Containers ◽  
Fracture Behaviors

The glass containers crushing process for recycling by using underwater shockwave was observed and the new cullet generation technique by explosive energy was proposed. In this study, the high-speed fracture behaviors of glass containers were visualized by using the high-speed photography and FEM simulation.

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.

Investigating particle phase velocity in a 3D spouted bed by a novel fiber high speed photography method

2013 ◽  
Author(s):  
Long Qian ◽  
Yong Lu ◽  
Wenqi Zhong ◽  
Xi Chen ◽  
Bing Ren ◽  
...  
Keyword(s):  
Phase Velocity ◽  
High Speed ◽  
High Speed Photography ◽  
Particle Phase ◽  
Spouted Bed ◽  
Photography Method

Seam Welds Modeling and Mechanical Properties Prediction in the Extrusion of AA6082 Alloy

2008 ◽  
Vol 367 ◽  
pp. 125-136 ◽  
Author(s):  
Lorenzo Donati ◽  
Luca Tomesani
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Fem Simulation ◽  
Die Design ◽  
Welding Parameters ◽  
Middle Section ◽  
3D Fem ◽  
Strain And Strain Rate ◽  
Mechanical Properties Prediction ◽  
Temperature Time

This work summarizes the outcome of recent research by the authors on modeling the formation of seam welds in aluminum extrusion and on evaluating the related mechanical properties on the final products. A profile with a seam weld in the middle section was produced with different die designs in order to investigate the relation between die design and local welding parameters, such as contact pressure, temperature, time of contact, strain and strain rate paths. The local welding conditions were evaluated by complete thermo-mechanical 3D FEM simulation of the processes. Specimens were extracted from the profiles and tensile tested, the resulting mechanical properties being discussed with respect to the local welding conditions. The possibility to adopt criteria for assessing the welding quality is discussed, together with the effect of high speed damage cracking.

scholarly journals FEM Simulation of the Riveting Process and Structural Analysis of Low-Carbon Steel Tubular Rivets Fracture

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 374
Author(s):  
Jaroslaw Jan Jasinski ◽  
Michal Tagowski
Keyword(s):  
Carbon Steel ◽  
Fracture Mechanism ◽  
Fem Simulation ◽  
Low Carbon Steel ◽  
Structural Defects ◽  
Composition Analysis ◽  
Assembly Process ◽  
Low Carbon ◽  
Forming Process ◽  
Explicit Integration

Riveted joints are a common way to connect elements and subassemblies in the automotive industry. In the assembly process, tubular rivets are loaded axially with ca. 3 kN forces, and these loads can cause cracks and delamination in the rivet material. Such effects at the quality control stage disqualify the product in further assembly process. The article presents an analysis of the fracture mechanism of E215 low-carbon steel tubular rivets used to join modules of driver and passenger safety systems (airbags) in vehicles. Finite element method (FEM) simulation and material testing were used to verify the stresses and analysis of the rivet fracture. Numerical tests determined the state of stress during rivet forming using the FEM-EA method based on the explicit integration of central differences. Light microscopy (LM), scanning electron microscopy (SEM) and chemical composition analysis (SEM-EDS) were performed to investigate the microstructure of the rivet material and to analyze the cracks. Results showed that the cause of rivet cracking is the accumulation and exceeding of critical tensile stresses in the rivet flange during the tube processing and the final riveting (forming) process. Moreover, it was discovered that rivet fracture is largely caused by structural defects (tertiary cementite Fe,Mn3CIII along the boundaries of prior austenite grains) in the material resulting from the incorrectly selected parameters of the final heat treatment of the prefabricate (tube) from which the rivet was produced. The FEM simulation of the riveting and structural characterization results correlated well, so the rivet forming process and fracture mechanism could be fully investigated.

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