Quantity expression of reinforcement phase distribution in composites on glass-fibers distribution in roving composites example
Fragment książki (Abstrakt)
| Status: | |
| Autorzy: | Wolszczak Piotr |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Strony: | 119 - 119 |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Author carries out research on relationships of the micro-geometry and the mechanical properties of fiberglass - epoxy resin composites. The mechanical properties are determined in the strength test. Microgeometry is characterized on the basis of microscopic images of the samples. Author proposed, the measure of distribution in the form of the area ratio of the matrix surrounding the single fiber to its circuit. The measure is expressed by Gab [mm]. In this paper, the relationship between the results obtained in the test samples of actual theoretical structures of square (K) and hexagonal (H) type are presented. Samples from the production process of helicopter blades girders were used. Comparison of the real and theoretical results rests on curves of the relative volume fraction of the glass against to the indicators characterizing the composites microstructure. As a result, we found that the experimental results are arranged in the vicinity of a square theoretical model curves. The results can be used to estimate the strength of the unidirectional composites with an irregular arrangement of fibers, made manually or using a molding apparatus. Based on the results it can be assumed that for the numerical estimation of the strength of the composites made from glass fibers of circular cross-section, of a diameter in the range of 10-20 micromilimeters, using theoretical models appropriate is square distribution model (K). |
