Accession Number : ADA258829
Title : Open and Filled Hole Static Tensile Strength Characterization of Metal Matrix Composite SCS-9/Beta21s.
Descriptive Note : Master's thesis,
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Roush, Jacob T
Report Date : Dec 1992
Pagination or Media Count : 165
Abstract : SCS-9/Beta 21s has a reduced gauge thickness, in comparison with other metal matrix composites, due to a smaller diameter fiber. This reduced gauge thickness makes it an attractive candidate for the skin of hypersonic vehicles. Tensile testing of (0/90) sub 2s and (O/+ or -45/90) sub s laminates was performed at room temperature, 482 deg C, and 650 deg C. Both notched and unnotched specimens were tested. Notched specimens, open and filled hole, had a width-to-diameter ratio of six. Materials 7075-T6 and Mar-m-246 were used as pins in the filled hole tensile testing. Analytical work was completed to predict material properties, elastic and plastic stress concentration factors, residual stresses, and failure strengths. Damage was documented in the form of fiber-matrix debonding, matrix cracking, fiber failure, and plasticity.
Descriptors : *TENSILE STRENGTH , *METAL MATRIX COMPOSITES , *STATICS , *SILICON CARBIDES , STRESSES , METALS , DIAMETERS , RATIOS , MATERIALS , COMPARISON , FAILURE , HYPERSONIC VEHICLES , PINS , PLASTICS , VEHICLES , WIDTH , WORK , PLASTIC PROPERTIES , RESIDUALS , ROOM TEMPERATURE , NOTCH SENSITIVITY , STRESS CONCENTRATION , THESES , ELASTIC PROPERTIES , LAMINATES , DAMAGE , TEMPERATURE , THICKNESS , FIBERS
Subject Categories : Inorganic Chemistry
Laminates and Composite Materials
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE