Analysis of Railgun Barrel Material

Cooper, K. P.; Jones, H.N.; Meger, R. A.

doi:10.1109/tmag.2006.887654

Cited by 32 publications

(18 citation statements)

References 3 publications

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“…In 2006, K. P. Copper carried out multiple cumulative emission tests, measured the distance from the bottom of the groove pit at the depth of 36cm and 96cm from the firing depth to the distance from the orbital edge [7]. It is found that the positions of slots and pits vary little with the number of launches; however, the groove pits on both sides of the track edge are not completely symmetrical.…”

Section: A Position Of Grooving Phenomenonmentioning

confidence: 99%

“…The most serious point of corrosion is about 300 micron away from the surface. The multiple accumulated emission test is based on the surface of the center of the track, and the depth of the pitting corrosion is shown in figure 1 [7]. The depth of grooving phenomenon has obvious linear relationship with the number of firing.…”

Section: B Depth Of Grooving Phenomenonmentioning

confidence: 99%

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Grooving Phenomenon Analysis of Series-Connected Augmented Sextupole Rails Material

Xue¹,

Shu²,

Liu³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

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Abstract-Because the electromagnetic railgun's main current can reach several MA and the muzzle velocity is more than 2 km/s, launching in this harsh environment in barrel will cause grooving to the rail. Using existing experimental data of references, this paper analyses the position and depth analysis of the grooving phenomenon. So this paper design series connected augmented sextupole rails electromagnetic launcher to obtain high inductance gradient. High inductance gradient plays an important role in a novel electromagnetic launcher. Since inductance gradient is the decisive factor to super high speed and reduce high current, this study focuses on the design of launch model and inductance gradient distribution in moving area of double projectile. In this study we will simulate three typical series augmented sextupole rails connection mode, with finite element method and compare them. The theoretical analysis and numerical simulations indicate that the inductance gradient performance of the A configuration is better than other configurations. Therefore, this configuration could reduce the grooving phenomenon of sextupole rails.

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Section: A Position Of Grooving Phenomenonmentioning

confidence: 99%

Section: B Depth Of Grooving Phenomenonmentioning

confidence: 99%

Grooving Phenomenon Analysis of Series-Connected Augmented Sextupole Rails Material

Xue¹,

Shu²,

Liu³

et al. 2018

Proceedings of the 4th Annual International Conference on Material Engineering and Application (ICMEA 2017)

View full text Add to dashboard Cite

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“…And the greater the incoming current, the more serious the damage will be. The slot etching pits will affect the electrical contact between the armature and the track after repeated firing of the electromagnetic rail-gun, which will damage the gun barrel and affect the performance of the electromagnetic rail-gun [3][4][5] .…”

Section: Damage Analysismentioning

confidence: 99%

Analysis and Research of Online Measurement Technology in Inner Bore of EML

2017

Proceedings of 2017 the 7th International Workshop on Computer Science and Engineering

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With the development of science and technology, as a new concept weapon electromagnetic gun has important strategic significance. In the process of launch, there are some damages including wear, corrosion, gouging and transition for the rail-gun. In order to study damage mechanism of the electromagnetic rail-gun during launch, it is necessary to detect the bore profile of electromagnetic rail-gun. The bore of rail-gun has the structural characteristics of closed, invisible and narrow space makes inconvenience for the measurement of the contour, so the online measurement and analysis of the rail-gun bore is very important. By comparing different methods of measurement, laser triangle method of noncontact is the heart of the way using in this paper. The laser triangle method has the characteristics of high precision and non-contact, and can realize on-line nondestructive measurement of arbitrary cross section of the rail bore. Through the comparison of the ideal contour and the measured profile of the electromagnetic rail-gun, the damage profile can be obtained. Using this bore profile scanner of electromagnetic rail-gun designed by this method, we can get two-dimensional profile images.

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“…Watt concluded the dissolution of copper alloys by molten aluminum facilitated by resistive heating, was responsible for grooving forming. Cooperet al [4] discovered that the maximum grooving depth located at the edge of insulation materials, spreading towards the center and edge of rails. Cooper concluded that grooving forming originated from the dissolution of copper alloys because of the flow of high velo city and high temperature molten aluminum as a result of velocity skin effect.…”

Section: The Surface Transient Damage Of Copper Alloys During Electromentioning

confidence: 99%

Development of Transient Damage Behaviors of Copper Alloys under High Velocity Sliding Electrical Contact

Zhang¹,

Guo²,

Huang³

et al. 2016

Proceedings of the 4th 2016 International Conference on Material Science and Engineering (ICMSE 2016)

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The transient damage problems of copper alloys are the central topic for improving the accuracy and lifetime of electromagnetic launcher. The research works on transient damage behaviors of copper alloys under high-speed sliding electrical contact during the past two decades were summarized in this paper and some suggestions for future research were presented. Firstly the three damage forms of copper alloys under high-velocity sliding electrical contact were introduced, respectively. Then the main technical methods that can solve the damage problems of copper alloys were presented. Finally some proposals for further study on transient damage behavior of copper alloys under sliding electrical contact were put forward.

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Analysis of Railgun Barrel Material

Cited by 32 publications

References 3 publications

Grooving Phenomenon Analysis of Series-Connected Augmented Sextupole Rails Material

Grooving Phenomenon Analysis of Series-Connected Augmented Sextupole Rails Material

Analysis and Research of Online Measurement Technology in Inner Bore of EML

Development of Transient Damage Behaviors of Copper Alloys under High Velocity Sliding Electrical Contact

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