Compression Behavior of Single Carbon Filaments Embedded in an Epoxy Polymer
| Autor: | R. M. Jensen, W. D. Bascom, D.J. Boll, L. Cordner |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Polarized light microscopy
Materials science Birefringence Scanning electron microscope Mechanical Engineering 02 engineering and technology Epoxy 021001 nanoscience & nanotechnology Isotropic etching Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Interphase Fiber Composite material 0210 nano-technology |
| Zdroj: | Journal of Composite Materials. 24:208-219 |
| ISSN: | 1530-793X 0021-9983 |
| DOI: | 10.1177/002199839002400205 |
| Popis: | The compression loading of single carbon filaments embedded in an epoxy polymer was investigated to determine the micro-mechanisms of failure. The fibers were observed using transmission polarized light microscopy. Failure invariably occurred by transverse shear with no evidence of microbuckling. A distinctive stress birefringence pattern was observed around the fibers which suggests a systematic variation in fiber modulus but with dimensions much larger than the crystallographic dimensions character istic of carbon fibers. The specimens were etched with acid to reveal the regions of fiber fracture. Although a variety of fracture morphologies were observed, they are all believed to be post-failure damage subsequent to the initial shear failure. The acid etching also revealed etch patterns in the matrix near the fiber/matrix boundary which are probably the result of chemical inhomogeneities in the interphase region. |
| Databáze: | OpenAIRE |
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