Influence of the Density of PETN-Coal Composites on the Threshold Characteristics of Explosive Decomposition in Laser Initiation

2020 ◽  
Keyword(s):  
Explosive Decomposition ◽  
Laser Initiation

Effect of the microfocal nature of the initiation of the explosive decomposition reaction on the efficiency of laser initiation

2014 ◽  
Vol 8 (6) ◽  
pp. 848-851
Author(s):  
E. D. Aluker ◽  
A. S. Zverev ◽  
A. G. Krechetov ◽  
A. Y. Mitrofanov ◽  
A. V. Tupitsyn
Keyword(s):  
Decomposition Reaction ◽  
Explosive Decomposition ◽  
Laser Initiation

Miro-hotspot model for the laser initiation of explosive decomposition of energetic materials with melting taken into account

2014 ◽  
Vol 50 (6) ◽  
pp. 704-710 ◽  
Author(s):  
B. P. Aduev ◽  
M. V. Anan’eva ◽  
A. A. Zvekov ◽  
A. V. Kalenskii ◽  
V. G. Kriger ◽  
...  
Keyword(s):  
Energetic Materials ◽  
Explosive Decomposition ◽  
Laser Initiation

Influence of the Density of PETN–Coal Composites on the Threshold Characteristics of Explosive Decomposition in Laser Initiation

2020 ◽  
Vol 56 (2) ◽  
pp. 231-236
Author(s):  
B. P. Aduev ◽  
D. R. Nurmukhametov ◽  
G. M. Belokurov ◽  
Ya. V. Kraft ◽  
Z. R. Ismagilov
Keyword(s):  
Explosive Decomposition ◽  
Laser Initiation

Constructing interparticle hotspots through cracking silver nanoplates for laser initiation of explosives

2021 ◽  
Vol 139 ◽  
pp. 106989
Author(s):  
Wencai Bai ◽  
Wenzhi Qin ◽  
Duo Tang ◽  
Faming Ji ◽  
Huisan Chen ◽  
...  
Keyword(s):  
Laser Initiation ◽  
Silver Nanoplates

scholarly journals Study of the effect of inter-pass temperature on weld overlap start-stop defects and mitigation by application of laser defocusing

2021 ◽  
Vol 114 (1-2) ◽  
pp. 117-130
Author(s):  
Wai Jun Lai ◽  
Supriyo Ganguly ◽  
Wojciech Suder
Keyword(s):  
Thermal Cycle ◽  
Laser Initiation ◽  
Thick Section ◽  
Keyhole Welding ◽  
Run Off ◽  
And Control ◽  
Laser Keyhole Welding

AbstractLaser keyhole initiation and termination-related defects, such as cracking and keyhole cavities due to keyhole collapse, are a well-known issue in laser keyhole welding of thick section steels. In longitudinal welding, run-on and run-off plates are used to avoid this problem. However, such an approach is not applicable in circumferential welding where start/stop defects remain within the workpiece. These issues can hinder industry from applying laser keyhole welding for circumferential welding applications. In this paper, the effect of inter-pass temperature on laser keyhole initiation and termination at the weld overlap start-stop region was investigated. This study has identified that defects occurring within this region were due to laser termination rather than laser initiation because of keyhole instabilities regardless of the thermal cycle. The laser termination defects were mitigated by applying a laser defocusing termination regime to reduce the keyhole depth gradually and control the closure of the keyhole.

Laser initiation of energetic materials: a historical overview

2007 ◽  
Author(s):  
M. D. Bowden ◽  
M. Cheeseman ◽  
S. L. Knowles ◽  
R. C. Drake
Keyword(s):  
Energetic Materials ◽  
Laser Initiation ◽  
Historical Overview
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