CompositesWorld
Issue link: https://cw.epubxp.com/i/866813
NEWS 83 CompositesWorld.com now extends to fuselage frames, wing and empen- nage stringers as well as nonaerospace parts, such as automotive sills, rails and struts, wind turbine blade spars, and frames for trailers and industrial machines. e process uses rollers to feed, shape and consolidate layers of reinforcements, eliminating preform tooling while enabling fast production of profiles. C-, T- and Z-profiles and typical closed shapes are enabled, but so are shapes with variable curvature, cross-section, width and thickness. "We use roll-forming like in the metals industry," says COPRO managing director Henrik Borgwardt, "but we can make more complex shapes." "e input reinforcements depend on the profile geometry and structural design," says co-founder Arne Stahl, "but for stringers and beams, we can use anything on a roll. e rollers sit on linear tracks so they can move from side to side to change the width and taper of the profile." (Fig. 3, p. 82). "We can also achieve joggles in this way," he adds. Joggles are bump-outs or local changes in the profile's shape enabling it to conform to its mating surface (i.e., stringer to wingskin) throughout thickness changes (e.g., ply buildups and drop-offs). FIG. 4 TFP scrims: wash- or melt-away convenience Orienting fiber in shapes other than just a straight line, ShapeTex preforms are stitched to a substrate (e.g., thin fiber scrim, recycled fiber veil, fabric) some of which can be washed away prior to resin transfer molding or melted during hot pressing of commingled laminates. Source | ShapeTex Automated Preforming, Part 2 A N N I V E R S A R Y 0 2 HPC Charter Advertiser H i g h T e m p e r a t u r e B o n d T o o l s • BMI • Epoxy M i l l F i x t u r e s P r e s s u r e I n t e n s i f i e r s / C a u l s B a c k u p S t r u c t u r e M a t e r i a l s • Panels, Tubes, Angles B a c k u p S t r u c t u r e K i t s C O M P O S I T E T O O L I N G 6262 W. 34th Street South ● Wichita, KS 67215 Phone: 316-946-5900 ● Email: Sales@BurnhamCS.com