| Evaluation of Manganese Phosphate Coatings. |
FEB 1984 |
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| Authors:
R. A. Farrara; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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 | The corrosion and wear resistance of two different manganese phosphate coatings with supplementary coatings of either oil or heat cured solid film lubricant (SFL) were compared. The basic, heavy manganese phosphate was compared to manganese phosphate converted or modified via the Endurion process. The corrosion resistance of the Endurion phosphate was significantly superior to the basic manganese phosphate. Endurion phosphate with a supplementary coating of oil did not fail after ... |
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| Stress Distribution in a Cylindrical Bar Subjected to Cyclic Torsional Loading. |
JAN 1984 |
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| Authors:
P. C. T. Chen; H. C. Wu; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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| The modified version of the endochronic of plasticity is applied to the problem of a cylindrical bar subjected to cyclic fully-reversed torsional loading. The governing equations of integral form are derived for pure shear deformation. Analytical techniques are employed in the solution of these equations. A material with appreciable cyclic hardening behavior is studied. The shear stress-strain curve of such a material under a strain-controlled condition is presented for all ... |
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| A Critical Review of the Dry Friction and Compressible Fluid Recoil/ Counter-Recoil Concepts |
FEB 1981 |
26 pages |
| Authors:
H. J. Sneck; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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 | This report reviews two new recoil systems as possible replacements for the conventional mechanisms currently in use on medium and large size cannon. One uses compressible fluid to dissipate energy in viscous friction and store elastic energy for counter recoil. The other uses coulomb or dry friction for dissipation of the recoil energy. |
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| Corrosion Protection of 416 Stainless Steel Firing Probes |
JUL 1979 |
21 pages |
| Authors:
S. Tauscher; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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| The effectiveness of several protective coatings in resisting pitting corrosion in 416 stainless steel 152mm firing probes was investigated using an accelerated corrosion test. Test specimens with selected metallic and non- metallic coatings were immersed in ferric chloride and examined periodically for damage. This report concludes that on the basis of these tests, the non-metallic coatings investigated generally provided better resistance to corrosive attack than the metallic coatings investigated. |
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| Refractory-Lined Composite Pressure Vessels |
DEC 1978 |
85 pages |
| Authors:
G. D'Andrea; R. L. Cullinan; P. J. Croteau; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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| Refactory lined pressure vessels, possessing good corrosion and erosion resistance at low and high temperatures, seem to be ideal for extending the wear life of conventional gun tubes. Since refractory materials exhibit high compressive and low tensile strength, prescribed residual stresses must be introduced to eliminate the significant tensile stresses produced during firing. The prominent problem in fabricating such vessels is to restrict the refractory material from expanding axially during ... |
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| Proceedings of the US Army Symposium on Gun Dynamics (2nd), Held at the Institute on Man and Science, Rensselaerville, N.Y. 19-22 September 1978 |
SEP 1978 |
373 pages |
| Authors:
Thomas E. Simkins; Julian J. Wu; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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| Twenty papers on various aspects of analysis, design and instrumentation of gun dynamics are presented by authors from five universities, five industrial research laboratories and various laboratories of the U.S. Army, Navy, and Air Force. |
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| The Abrasion Characteristics of Certain Protective Coatings on Aluminum and Magnesium Alloys |
MAY 1977 |
21 pages |
| Authors:
A. Campbell; W. Mortimer; P. Thornton; ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB
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| The abrasion resistances of two finishing systems, one applied to 2014 aluminum and the other to ZK60A magnesium, were evaluated. Both alloys were first anodized. Subsequently, a blue-wash primer and semigloss paint were applied to the 2014 aluminum; the ZK60A magnesium received a polyamide primer and a polyurethane topcoat. The tests, performed to compare the relative abrasion resistances of the two systems, were carried out using the Taber Abraser Model ... |
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