Wear of Homogeneous and Composite Materials under Conditions of Repeated Normal and Sliding Impact.
Abstract
This report describes experimental and analytical investigations in the area of wear of materials due to repeated impact loading. A reciprocating impact wear test apparatus is utilized to provide controlled, repetitive impacts between a material specimen and a counterface. The impulsive loading may be purely normal or a condition of relative sliding may be introduced during the impact event. A wide variety of materials have been investigated in both normal and sliding impact modes. These include two polymers, a composite, and several metals. The wear behavior of these materials is investigated as a function of peak impulsive load, relative sliding velocity, and number of impact load cycles. Weight loss and/or surface profile data are obtained as a function of these parameters. Scanning electron microscope studies of the wear surface and of sub-surface sections suggest that delamination is the operative mechanism for some materials but not for others. Analytical investigations are directed toward determination of the states of stress in material specimens undergoing controlled, repetitive impact. Results are derived from the theory of elasticity by application of the Laplace transformation combined with the triple, finite Fourier transformation. Correlations between sub-surface stress levels and wear debris formation are sought. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1977
- Accession Number
- ADA042655
Entities
People
- Roman Solecki
- Stephen L. Rice
Organizations
- University of Connecticut