Open and filled hole static tensile strength characterization of metal matrix composite SCS-9/Beta21s. Master's thesis

Technical Report · Tue Dec 01 04:00:00 EST 1992

OSTI ID:7075225

Roush, J T

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.... SCS-9, Beta 21s, Open Hole, Filled Hole, Metal Matrix Composite, Notch, Static Tensile.

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, OH (United States). School of Engineering
• OSTI ID: 7075225
• Report Number(s): AD-A-258829/1/XAB; AFIT/GAE/ENY--92D-12
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360603 -- Materials-- Properties
ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPOSITE MATERIALS
CRACK PROPAGATION
ELASTICITY
ELEMENTS
FIBERS
INTERMETALLIC COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
METALS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICITY
PLASTICS
RESIDUAL STRESSES
SILICON CARBIDES
SILICON COMPOUNDS
STRESSES
SYNTHETIC MATERIALS
TENSILE PROPERTIES
TITANIUM ALLOYS