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prepreg tape

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Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000629
EISBN: 978-1-62708-181-8
.... The composites were all fabricated by lay-up of prepreg tape and were autoclave cured 175 °C (350 °F) according to the manufacturer's recommendations. Specimens were then end-tabbed and cut in accordance with the ASTM D3039. The 0° and 90° tensile specimens were tested in accordance with ASTM D3039, and the 0...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003360
EISBN: 978-1-62708-195-5
... reinforced fabrics; hybrid fabrics; woven fabric prepregs; unidirectional and multidirectional tape prepregs; and the prepreg tow. The article discusses three major categories of tape manufacturing processes, namely, the hand lay-up, machine-cut patterns that are laid up by hand, and the automatic machine...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003418
EISBN: 978-1-62708-195-5
... and subsequently rolled into a compacted and densified laminate. Compaction and densification of the material during the wrapping process is accomplished using contact pressure between the mandrel, the prepreg, and the rolling table surfaces as shown in Fig. 1 . Rolled parts are spirally wrapped with shrink tape...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003409
EISBN: 978-1-62708-195-5
... with near- straight fibers and consistent resin content in a form that had a tackiness suited to laying up multiple layers of material in complex-shape tools. By 2000, a vast range of prepregs with different fiber types, fabrics, tape styles, resin types, and thicknesses became available, enabling...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003419
EISBN: 978-1-62708-195-5
... or commingling of reinforcing fibers with matrix fibers). In the latter case, melt impregnation must be accomplished at a later stage, either in an intermediate consolidation step or as part of final component molding. Fully impregnated thermoplastic prepregs are generally supplied as wide sheet or narrow tape...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... and lower performance applications. applications of prepreg resins aramid fibers fabric types fiber forms fiber sizing agents fiber types fiber-reinforced polymeric matrix composites prepreg tape manufacturing processes prepreg tow weave construction THIS ARTICLE addresses those types...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003351
EISBN: 978-1-62708-195-5
... recently, the need for lower- cost carbon fiber for commercial/industrial applications led to the availability of much larger tows (48K to >200K). Similar examples can be cited for prepreg tape width, resin content, and thickness. Thus, constituent raw material forms can be adjusted to meet evolving...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002465
EISBN: 978-1-62708-194-8
... Wet fiber, winding, prepreg tape Undirectional continuous fiber tape Yes Yes Yes Multidirectional parallel to mandrel Low Low Braiding Wet resin impregnation after winding Continuous fiber Yes Yes Yes Parallel to braid mold surface, multidirectional fibers Medium/high Medium...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... processing uses computer controls, the processor must ensure software verification and security. Equipment requiring qualification includes autoclaves, automated tape-laying machines, automated prepreg-cutting machines, drape-forming machines, inkjet-marking machines, and projection ply-locating machines...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003032
EISBN: 978-1-62708-200-6
..., and cone shapes. Carbon-Fiber- and Fabric-Reinforced Epoxy Resin Carbon-fiber- and fabric-reinforced epoxy resin is reinforced with carbon fibers to form unidirectional prepreg tapes suitable for filament winding of components such as pressure vessels, tanks, and pipes, as well as shapes...
Image
Published: 01 November 1995
Fig. 10 Splicing of fabric and tape prepegs. Overlap splice is used for fabric at all ply orientations and for tape in a 0° direction. Butt-strap splice is used for fabric in which only warp or fill fibers have been cut. Tape prepreg is aligned parallel to the cut fibers. More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... specific types of flaws and material structure. The interlaminar reflections in composite materials formed from continuous fiber prepreg tape are low in amplitude compared with those of woven material systems. Woven materials produce large-amplitude periodic reflections that decay logarithmically...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003036
EISBN: 978-1-62708-200-6
... are each described in the articles that follow. The development of systems to lay tape in the flat began about the same time that programs were first initiated to evaluate advanced fibers using tape prepregs. The original concept was to prepare groups of plies in the flat and manually place them...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003447
EISBN: 978-1-62708-195-5
... planes, can also be woven with more threads per inch to achieve a high density. Satin weaves are used to best advantage in the reinforced plastic field, especially for prepregs for aircraft and missiles. Satin weave fabrics require more threads per inch to retain stability and are generally produced...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003407
EISBN: 978-1-62708-195-5
... construction, based on materials and processes little changed since the 1980s (polyester resin, chopped strand mat and woven rovings, hand laminating), to elevated- temperature cure, vacuum consolidation, and unidirectional prepreg tapes with honeycomb cores. Most custom or one-off builders use epoxy-resin...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003039
EISBN: 978-1-62708-200-6
... of Westinghouse Electric Company, Marine Division Thermoset resins, generally used as binders for reinforcements, can be applied to the dry roving at the time of winding, which is known as wet winding. They may also be applied prior to winding as a tow or tape prepreg and used promptly or refrigerated...
Book Chapter

By Don O. Evans
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003410
EISBN: 978-1-62708-195-5
... of missing tows. fiber placement FIBER PLACEMENT is a unique process combining the differential tow payout capability of filament winding and the compaction and cut-restart capabilities of automated tape laying. During the fiber placement process, individual prepreg fibers, called tows, are pulled...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003416
EISBN: 978-1-62708-195-5
... for reinforcements, can be applied to the dry roving at the time of winding, which is known as wet winding. They may also be applied prior to winding as a tow or tape prepreg and used promptly or refrigerated. Usually the cure of the filament-wound composite is conducted at elevated temperatures without vacuum...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003411
EISBN: 978-1-62708-195-5
... system warms the prepreg to increase tack levels just ahead of the lay-down shoe/roller ( Ref 4 ). Heated tape temperatures range from 26 to 43 °C (80–110 °F). Control The CNC is a multiblock buffered- contouring system, which is specifically designed for tape-laying applications. It contains...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003441
EISBN: 978-1-62708-195-5
... or subelement testing. Unidirectional Tapes Numerous fiber strands (tows) are creeled and spread while being combined with the resin matrix to produce a unidirectional tape prepreg. Once a tape is produced, the physical tests of resin content, fiber areal weight, volatile content, gel time, and flow can...