| New and Improved Rubber Compounds for Weapon Systems. |
OCT 1972 |
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| Authors:
Frank B. Testroet; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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 | A study of the compatibility of elastomers with MIL-L-46000 lubricant, MIL-C-372 bore cleaner and various explosives and propellants is reported. A technique for bonding neoprene rubber to steel during injection molding is described. Newly marketed carbon blacks were shown to be suitable replacements for channel blacks that are no longer manufactured in this country. Channel blacks are cited in many military tire specifications as ingredients for control or referee compounds. ... |
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| Development of Wear-Resistant Elastomers for Track Pads. |
OCT 1972 |
33 pages |
| Authors:
Edward W. Bergstrom; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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 | Correlation between service test wear ratings and laboratory test data obtained at room temperature for tear strength, resistance to crack growth, and abrasion resistance, as previously reported by the Research Directorate of this Command, has been confirmed in the most recent service test conducted at ATAC and Yuma. Of even more importance was the finding that the results of tear tests and crack growth tests conducted at 250 F correlated ... |
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| Hot Hardness Investigation of Refractory Metals and Alloys |
SEP 1972 |
34 pages |
| Authors:
Cyrus H. Philleo; Donald H. Sale; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| The investigation was conducted to determine the hardness of several refractory metals and alloys at temperatures from 70F to 2000F. Microhardness tests were made in vacuum under controlled conditions to provide comparable screening data for predicting the strengths of these materials in high- temperature applications such as gun barrel liners. Materials tested included tungsten, molybdenum, columbium, tantalum, columbium-base alloys, and tantalum- base alloys. Chromium plate and Cr-Mo-V steel, currently used ... |
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| Liquid Polymers as Coatings for Improved Coated Fabrics. Supplement. |
SEP 1972 |
36 pages |
| Authors:
William F. Garland; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| Results are presented concerning the use of liquid polymers as coatings for fibrous and nonfibrous substrates to provide improved weapon accessories such as gun covers and cleaning kit packets. Both pigmented and nonpigmented coatings were investigated. Application of solvent-diluted polymer coatings to woven substrates caused a significant loss in cross-direction breaking strength. Base or tie coats (consisting of liquid diamines applied to the substrate prior to application of liquid polymers) ... |
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| Low-Moisture Permeable-Rubber Barrier Bags for Combustible-Cased Ammunition. |
AUG 1972 |
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| Authors:
John R. Cerny; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| A screening program was conducted to determine the most applicable elastomer that could be economically fabricated into ammunition barrier bags having the following characteristics: Resistant to water-vapor permeation, functional over the temperature range from ambient to -40 F, and resistant to stress relaxation. Of the seventeen elastomers evaluated, EPR had the best combination of the desired properties. Water-vapor transmission-rate (WVTR) DETERMINATIONS WERE MADE ON EPR and butyl rubbers compounded with ... |
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| Improved Adhesion of a Thermoplastic Polymer to Nonwoven Substrates. |
AUG 1972 |
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| Authors:
Thomas J. Koehler; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| The objective of this work was to develop coated fabrics with high adhesion between polymer and substrate to minimize delamination under severe climatic conditions and to provide high-component peel strength of heat-sealed seams. Polyether urethane was modified with olive drab pigment, UV light-absorbers and a silicone bubble-dispersing agent to improve the resistance to aging of coated surfaces. The pigment improved coating bond to the nylon substrate, heat-seal peel strength and ... |
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| Effect of Strain Rate on the Mechanical Properties of CR-MO-V Steel at Elevated Temperatures |
FEB 1972 |
24 pages |
| Authors:
Kailasam R. Iyer; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| The mechanical properties of quenched and tempered Cr-Mo-V steel were determined at temperatures between 800F and 1300F at strain rates ranging from 0.002 to 20/min. Experimental data were analyzed as functions of strain rate and temperature on the basis of three semi-empirical mechanical equations of state. |
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| Fatigue Properties of Gun Barrel Materials |
JAN 1972 |
35 pages |
| Authors:
Kailasam R. Iyer; Richard B. Miclot; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| A continuing program to determine the fatigue characteristics of gun barrel materials is intended to lead to the prediction of fatigue damage in gun barrels and will facilitate the development of improved barrel materials. The outside surface temperatures of an M60, 7.62mm, gun barrel were measured during the test firing at various locations, and the temperatures across transverse sections of the barrel were calculated. The data were analyzed to study ... |
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| Concepts of Single Shot Grenade Launchers Attached to an Infantry Rifle. |
JUN 1971 |
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| Authors:
Robert E. Duncan; ARMY WEAPONS COMMAND ROCK ISLAND IL GENERAL THOMAS J RODMAN LAB
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| The report discusses the initial phase of an in-house design activity for the development of a 30mm grenade launcher. The launcher work is one aspect of the total Future Rifle System Program. As such, the concepting efforts were molded around many of the requirements of that program so as to produce a composite weapon system consisting of both area and point fire components. In a span of ten weeks, a ... |
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Reports by Corporate Author
