Research Papers

Gun Liner Emplacement

[+] Author and Article Information
William S. de Rosset

 Dynamic Science, Inc., Army Research Laboratory, ATTN: RDRL-WMM-F, APG, MD 21005william.s.derosset.ctr@mail.mil

Silastic is a registered trademark of Dow Corning, Midland, MI.

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Nylon is a registered trademark of DuPont Corp., Wilmington, DE.

J. Pressure Vessel Technol 134(4), 041009 (Jul 27, 2012) (5 pages) doi:10.1115/1.4007008 History: Received November 16, 2011; Accepted June 21, 2012; Published July 26, 2012; Online July 27, 2012

The development of a process to emplace a refractory metal liner inside a gun tube is described. The process consists of filling the liner with an elastomeric material and then slipping this arrangement into the gun tube. The ends of the liner are plugged with plastic disks and pressure is applied to the elastomeric material by a load frame. Plastic deformation of the gun tube results in residual radial stresses that induce a frictional bond between the liner and gun tube. Efforts are described to increase the bond strength through increasing the coefficient of friction.

Copyright © 2012 by American Society of Mechanical Engineers
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Figure 1

Schematic of GLEEM application

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Figure 5

Cross section of test fixture used to measure bond strength, showing placement of gun tube section

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Figure 6

Hoop strain as a function of axial position for various loads applied to cylinder 6

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Figure 7

Embossed surface of Stellite 25 liner taken from cylinder 6

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Figure 2

Implementation procedure

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Figure 3

Schematic of steel cylinder with internal grooves

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Figure 4

Pattern of cuts for cylinders 6 and 7

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Figure 8

Groove depth versus bond strength for the first four cylinders

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Figure 9

Maximum applied pressure versus bond strength



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