Effects of Experimental Parameters in the Explosive Welding Process Using Reflected Underwater Shock Wave

Detonating code is a flexible code with an explosive core. It is used to transmit the ignition of explosives with high detonation velocity in the range of 5.5 to 7 km/s. However, it is difficult to use detonating code for the explosive welding of common metals since the horizontal point velocity usually exceeds the sound velocity. Hence, in the present work, a new method using underwater shock wave generated by the detonation of detonating code was tried. The details of the experimental parameters and the results are presented. From the results it is observed that the above technique is suitable to weld thin metal plates with relatively less explosives.

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Numerical Simulation on Explosive Welding Process Using Reflected Underwater Shock Wave

Materials Science Forum ◽

10.4028/www.scientific.net/msf.566.309 ◽

2007 ◽

Vol 566 ◽

pp. 309-314

Author(s):

Kazumasa Shiramoto ◽

Masahiro Fujita ◽

Yasuhiro Ujimoto ◽

Hirofumi Iyama ◽

Shigeru Itoh

Keyword(s):

Numerical Simulation ◽

Shock Wave ◽

Explosive Welding ◽

Welding Process ◽

Underwater Shock Wave ◽

Underwater Shock ◽

Effective Use

The paper describes a numerically simulated result for the explosive welding using reflected underwater shock wave. Through the numerical simulation, the effective use of reflected underwater shock wave was clearly suggested and the method to improve the assembly was demonstrated.

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2729 An Explosive Welding Process by Effective Application of Reflected Underwater Shock Wave : Investigation on effects of Parameters Using Numerical Simulation

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2007.1.0_619 ◽

2007 ◽

Vol 2007.1 (0) ◽

pp. 619-620

Author(s):

Kazumasa SHIRAMOTO ◽

Hirofumi IYAMA ◽

Yasuhiro UJIMOTO ◽

Shoichiro KAI ◽

Masahiro FUJITA ◽

...

Keyword(s):

Numerical Simulation ◽

Shock Wave ◽

Explosive Welding ◽

Welding Process ◽

Underwater Shock Wave ◽

Effective Application ◽

Underwater Shock

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1433 An Explosive Welding Process by Effective Application of Reflected Underwater Shock Wave : A Method by Using Reflection at Bottom Surface

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2008.1.0_273 ◽

2008 ◽

Vol 2008.1 (0) ◽

pp. 273-274

Author(s):

Kazumasa SHIRAMOTO ◽

Takahiro TAKEDA ◽

Hirofumi IYAMA ◽

Yasuhiro UJIMOTO ◽

Shoichiro KAI ◽

...

Keyword(s):

Shock Wave ◽

Explosive Welding ◽

Welding Process ◽

Bottom Surface ◽

Underwater Shock Wave ◽

Effective Application ◽

Underwater Shock

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Numerical Simulation of Underwater Explosive Welding Process

Materials Science Forum ◽

10.4028/www.scientific.net/msf.767.120 ◽

2013 ◽

Vol 767 ◽

pp. 120-125 ◽

Cited By ~ 5

Author(s):

Wei Sun ◽

Xiao Jie Li ◽

Kazuyuki Hokamoto

Keyword(s):

Numerical Simulation ◽

Explosive Welding ◽

Welding Process ◽

High Hardness ◽

Acceleration Process ◽

Flyer Plate ◽

Underwater Shock Wave ◽

Experimental Parameters ◽

Wave Morphology ◽

Underwater Shock

Recently, underwater explosive welding shows its advantage in some difficult-to-weld combinations such as material with thin thickness, high hardness, and fragile quality. The pattern of the typical wave morphology in the interface of the welding specimen indicates the suitability of the selected experimental parameters and sound strength of the laminates. For the existence of the water, traditional Gurney formula and Aziz formula can not directly be used to evaluate the velocity and acceleration process of the flyer plate. Numerical simulation is necessary and irreplaceable for existing knowledge. Underwater explosive welding process was numerically simulated by ANSYS/LS-DYNA to explore the underwater shock wave and deformation process of the flyer plate. Velocity and pressure distribution of welding plates were obtained. The velocity of the flyer plate could satisfy the minimum velocity in explosive welding. It was found that water prevented the gross distortion and ensured the integrity of the composite laminate. Welding rate was increased by expanding the size of the explosive.

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