Accession Number : ADA132354

Title :   Wear during Rubbing of a Sintered Metal Powder Body.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Rogacki,John R

PDF Url : ADA132354

Report Date : Jan 1983

Pagination or Media Count : 114

Abstract : Rub interactions were carried out between an abradable nickel-chromium seal material and titanium alloy blades at slow speeds. Square-ended and negative rake angles blades with blade tip lays parallel and perpendicular to rubbing were fed at six different rates ranging from 0.16 to 100 x .000001 m/pass. The specific energy of seal material displacement increased substantially with feed. A relationship between feed and specific energy of seal material displacement was suggested. The modulus of elasticity of the seal material was found to vary with strain. Results from tensile tests accomplished during this work were combined with data from compression tests to derive a relationship between modulus of elasticity and strain. Based on the results of these tests, it is suggested that the primary mechanism of seal material wear was fatigue.

Descriptors :   *Powder metals, *Turbine blades, *Wear, *Fatigue(Mechanics), *Gas seals, *Seals(Stoppers), Sintering, Abrasion, Chromium alloys, Nickel alloys, Titanium alloys, Bodies, Rake angles, Tensile strength, Displacement, Test methods, Porosity, Plastic deformation, Ceramic materials, Modulus of elasticity, Research management, Theses

Subject Categories : Adhesives, Seals and Binders
      Metallurgy and Metallography
      Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE