By Stan Peters
Filament winding is the most productive approach to production composite shapes. issues contain functions and barriers of filament winding, sensible concerns resembling fiber and resin dealing with, winding idea, software program and numerical keep watch over, background of the method, and more.Engineers, brands, and teachers will savor this e-book s sensible process. Richly illustrated with photographs of winding machines, composite fabrication, and finish items.
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Additional info for Composite Filament Winding
50). An increasing roving width B speeds up the winding process (less windings needed) but reduces the structural performance due to increased deviations from the ideal, zero-width, geodesic path. Moreover, for sufﬁciently large B, the Tp value may not be reached by the winding process. 57) For k = 0 (netting approach), the ﬁbers are equally loaded in tension everywhere; therefore, the winding thickness will always be sufﬁcient. Note, however, that in this case the minimum radius, Ymin, is bigger than the Ymin provided by k 0, so the nonoptimal area around the pole is also bigger.
As the winding angle increases, the band becomes more oblique to the section of the mandrel, and the effective thickness increases in proportion to 1/cos(A). This is most obvious when winding low angles on a closed-end pressure vessel, where, at the polar end openings, the winding is several times thicker than on the body of the cylinder. Software Systems for Numerical Control Winders Some of the physical considerations that go into controlling a ﬁlament winding machine have been discussed. Simple parts can be programmed by hand calculation or a spreadsheet, if the programmer is so inclined and possesses sufﬁcient knowledge and expertise.
9). Fila- 42 / Composite Filament Winding ment winding has moved from the domain of the academic researcher into established practice for composites manufacturing. Manufacturing companies are primarily interested in readymade software solutions that are affordable, easy to use, and reliable. There are four elemental stages of any advanced software system, although some of the stages may be rolled into one operation as far as the user is concerned: • • • • Mandrel deﬁnition: Creating or importing from a CAD package a 3-D representation of the surface of the mandrel that is to be wound Path generation: Creating feasible paths on the deﬁned surface of the mandrel.
Composite Filament Winding by Stan Peters