Determination of Residual Stresses in Composition Materials,
Abstract
The considerable differences that exist between the mechanical and physical properties of the components in composition materials invariably result in the appearance of longitudinal and transverse residual stresses in the manufacture and usage of fibre-reinforced materials. In this study, an attempt is made to develop empirical methods for the determination of longitudinal residual stresses in materials, reinforced by continuous fibers, when their deformation history is unknown. These methods are based on the characteristics of the expansion and compression diagrams of composition materials. Experiments were performed on the following systems: aluminum - steel, aluminium - tungsten, and nickel - tungsten with different volumetric content of reinforcing wires. A universal 'Shopper' machine was used for the testing. The rate of the gripping movement was 0.5 mm/min. Specimen deformation was determined by a strain gauge with a 0.005 mm scale value and a 50 mm base. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 16, 1971
- Accession Number
- AD0727208
Entities
People
- E. M. Makushok
- I. Kh. Chutaev
- V. P. Severdenko
Organizations
- National Air and Space Intelligence Center