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An evaluation of strain measuring devices for ceramic composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gyekenyesi, John Z. Bartolotta, Paul A. |
| Copyright Year | 1991 |
| Description | A series of tensile tests was conducted on SiC/reaction bonded silicon nitrides (RBSN) composites using different methods of strain measurement. The tests were used to find the optimum strain sensing device for use with continuous fiber reinforced ceramic matrix composites in ambient and high temperature environments. Bonded resistance gages were found to offer excellent performance for room temperature tests. The clip-on gage offers the same performance, but less time is required for mounting it to the specimen. Low contact force extensometers track the strain with acceptable results at high specimen temperatures. Silicon carbide rods with knife edges are preferred. The edges must be kept sharp. The strain measuring devices should be mounted on the flat side of the specimen. This is in contrast to mounting on the rough thickness side. |
| File Size | 10482250 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920005215 |
| Archival Resource Key | ark:/13960/t87h6h76v |
| Language | English |
| Publisher Date | 1991-11-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Ceramic Matrix Composites Performance Tests Tensile Tests Measuring Instruments Silicon Carbides Fiber Composites Extensometers Rods Ceramics High Temperature High Temperature Environments Edges Mounting Thickness Ambient Temperature Silicon Nitrides Strain Measurement Detection Room Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
