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EnglishThe present investigation aims at studying the tapping process of a three-layer stack constituted by two CFRP layers and a core plate in AA7075 aluminum alloy. The CFRP laminates were obtained by a pre-impregnated woven sample made up of T700 carbon fibers and a thermoset epoxy matrix. Tapping experiments were performed on a 5-axis machining center instrumented with a dynamometer to measure thrust force generated during process. A high-speed steel tool, coated with nanocomposite TiAlN, was used. According to the tool manufacturer recommendations, rotational speed and feed rate were 800 rpm and 1000 mm/min, respectively. Similar thrust force time history responses were obtained by tapping different holes, even though the vertical force increases with number of threaded holes. Furthermore, a quantitative evaluation of delamination at the periphery of entry holes was carried out. The delamination at the entry hole strongly increases with number of threaded holes.
| Titolo: | Study of tapping process of carbon fiber reinforced plastic composites/AA7075 stacks |
| Autori: | SIMONCINI, MICHELA (Corresponding) |
| Data di pubblicazione: | 2018 |
| Handle: | http://hdl.handle.net/11389/25360 |
| ISBN: | 978-0-7354-1663-5 |
| Appare nelle tipologie: | 2.1 Contributo in volume (Capitolo o Saggio) |
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