A rapid FIB-notch technique for characterizing the internal morphology of high-performance fibers
| Autor: | Emil Sandoz-Rosado, Kenneth E. Strawhecker, Taylor A. Stockdale, Eric D. Wetzel |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Ultra-high-molecular-weight polyethylene
Materials science Mechanical Engineering Modulus 02 engineering and technology Kevlar 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Focused ion beam 0104 chemical sciences Shear (sheet metal) chemistry.chemical_compound chemistry Mechanics of Materials Distortion Fracture (geology) General Materials Science Fiber Composite material 0210 nano-technology |
| Zdroj: | Materials Letters. 176:173-176 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2016.04.082 |
| Popis: | This work introduces an innovative technique to characterize the internal morphology of high-performance fibers by using a focused ion beam (FIB) sample preparation method and subsequent atomic force microscopy (AFM). A FIB is used to mill opposing notches that facilitate direct failure along a longitudinal shear plane, and expose the internal surface of the fiber. By exposing this surface via longitudinal shear, distortion of the cleaved surface is minimal, which is an advantage over surface preparation methods such as microtoming. After cleaving the notched fibers, an AFM technique is used to generate modulus maps of the fiber fracture surfaces. These modulus maps provide qualitative and quantitative microstructural information. Initial results obtained from Kevlar KM2 and Dyneema SK76 fibers are presented and a brief analysis of the observed internal features is provided. Extending the technique to image internal features in other materials is also discussed. |
| Databáze: | OpenAIRE |
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