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Room temperature tensile behavior and damage accumulation of hi-nicalon reinforced sic matrix composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gyekenyesi, J. Z. Morscher, G. N. |
| Copyright Year | 1998 |
| Description | Composites consisting of woven Hi-Nicalon fibers, BN interphases, and different SiC matrices were studied in tension at room temperature. Composites with SiC matrices processed by CVI and melt infiltration were compared. Monotonic and load/unload/reload tensile hysteresis experiments were performed. A modal acoustic emission (AE) analyzer was used to monitor damage accumulation during the tensile test. Post test polishing of the tensile gage sections was performed to determine the extent of cracking. The occurrence and location of cracking could easily be determined using modal AE. The loss of modulus could also effectively be determined from the change in the velocity of sound across the sample. Finally, the stresses where cracks appear to intersect the load-bearing fibers correspond with high temperature low cycle fatigue run out stresses for these materials. |
| File Size | 550120 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19980237335 |
| Archival Resource Key | ark:/13960/t3fz26x71 |
| Language | English |
| Publisher Date | 1998-01-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Position Location Tensile Tests Acoustic Velocity Acoustic Emission Silicon Carbides Thermal Fatigue Room Temperature Loads Forces 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 |
