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Coefficient of friction and damage to contact area during the early stages of fretting 1: Glass, copper, or steel against copper

Description: Report presenting experiments to measure the coefficient of friction and to determine the damage to the contact area during early stages of fretting of copper at a frequency of 5 cycles per minute. Specimen combinations of copper against glass, copper against copper, and copper against steel, as well as various copper oxide films and powder compacts were used.
Date: September 1953
Creator: Godfrey, Douglas & Bailey, John M.
Partner: UNT Libraries Government Documents Department

Coefficient of friction and damage to contact area during the early stages of fretting 2: steel, iron, iron oxide, and glass combinations

Description: Report presenting experiments to study the start of fretting and cause of damage during the early stages of fretting of steel-steel combinations at a frequency 5 cycles per minute, an amplitude of 0.006 inch, a load of 150 grams, in air with relative humidity of less than 10 percent. Pure iron, glass, and iron oxide powder compacts were used in supplementary experiments.
Date: April 1954
Creator: Bailey, John M. & Godfrey, Douglas
Partner: UNT Libraries Government Documents Department

Wear of typical carbon-base sliding seal materials at temperatures to 700 degrees F

Description: Report presenting wear and friction studies to show the effects on performance of temperature, type of mating material, and minor composition changes in typical carbon seal materials. Most data were obtained at a surface speed of 10,000 feet per minute, a load of 1000 grams on a 3/16-inch-radius specimen, and temperatures up to 700 degrees Fahrenheit. Wear of carbon seal materials increased rapidly with high temperatures. The effect of temperature on wear was reduced by using chromium-plated steel as the mating surface rather than stainless or tool steel.
Date: February 1956
Creator: Johnson, Robert L.; Swikert, Max A. & Bailey, John M.
Partner: UNT Libraries Government Documents Department