Abstract
A new method for determining the in-situ fiber/matrix bond properties of realistic composites was described. An in-situ interfacial strength testing (ISIST) instrument based on precise position, auto-loading and data acquisition system was established. The interfacial shear strength of the composites can be obtained by using debonding force through finite element analysis. Several factors, which affect the analyses of interfacial shear stress were investigated, and a modified micromechanic model of tested fiber, surrounding matrix and surrounding fibers was given. Based on the ISIST technique, the interfacial bond properties between the carbon fiber and PMR-15 polyimide matrix for actual composites were investigated, and the influences of different treatment methods of carbon fiber surface on interfacial shear strength of CF/PMR-15 composites were discussed. Finally, interfacial debonding mechanism was preliminarily studied by means of TEM technique.
| Original language | English |
|---|---|
| Pages (from-to) | 83-89 |
| Number of pages | 7 |
| Journal | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
| Volume | 12 |
| Issue number | 3 |
| State | Published - Sep 1995 |
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