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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
... Abstract This chapter familiarizes readers with the many and varied thermoset composite fabrication processes and the types of applications for which they were developed. It describes wet lay-up, prepreg lay-up, and low-temperature vacuum bag curing prepreg processes, which are best suited for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the properties and processing characteristics of glass, aramid, carbon, and ultra-high molecular weight polyethylene fibers and related product forms, including woven fabrics, prepreg, and reinforced mats. It also includes a review of fiber terminology as well as...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860035
EISBN: 978-1-62708-338-6
... programming various geometries using advanced software tools and discusses how various materials, such as rovings, tow-preg, prepreg tape, and woven materials, affect winding program generation. computer numerical controlled winding machines computer-aided manufacturing filament winding prepreg tape...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860149
EISBN: 978-1-62708-338-6
...-benzobisoxazole), high-performance fibers Toyobo Table A1.2 Resin designations Resin designation Type Supplier 3501 Epoxy prepreg, 350 °F cure Hexcel Aerospace LY564 Epoxy Araldit/Huntsman 1902 Epoxy prepreg, 250 °F cure … 8552 Epoxy prepreg, 350 °F cure Hexcel Aerospace...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870201
EISBN: 978-1-62708-314-0
... Debulking , 31st International SAMPE Symposium and Exposition , Apr 1986 • Thorfinnson B. and Bierrinann T.F. , Measurement and Control of Prepreg Impregnation for Elimination of Porosity in Composite Parts , Society of Manufacturing Engineers, Fabricating Composites ’88 , Sept...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... or preimpregnated with resin (prepreg). Fig. 18.1 Product forms used in composites Not all fiber or matrix combinations are available in a particular material form, since the market drives availability. In general, the more operations required by the supplier, the higher the cost. For...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
... Assurance and Processing , ASTM STP 797 , 1983 , p 3 – 14 10.1520/STP28535S 7. Carpenter J.F. , Assessment of Composite Starting Materials: Physiochemical Quality Control of Prepregs , AIAA/ASME Symposium on Aircraft Composites: The Emerging Methodology for Structural Assurance , San...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
... repair, and only a few examples will be given. Three typical bonded repairs ( Fig. 19.11 ) are the bonded patch, the scarf repair, and the stepped-lap repair. The bonded patch repair can be accomplished using prepreg, wet lay-up, or thin titanium sheets bonded together with layers of adhesive. For...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... Boyd J. , “ Vacuum-Bag-Only-Curable Prepregs That Produce Void-Free Parts ,” SAMPE 2002 , May 12–16 , 2002 • Thorfinnson B. and Bierrinann T.F. , “ Production of Void Free Composite Parts without Debulking ,” 31st International SAMPE Symposium and Exposition , April...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... can be successfully consolidated in very short times (minutes if not seconds), while woven powder coated or comingled prepregs require longer times for the resin to flow and impregnate the fibers. Occasionally, a process called film stacking is used, in which alternating layers of thermoplastic film...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780089
EISBN: 978-1-62708-281-5
... Analysis of Adhesive Resins in Aerospace Applications , Proc. Nat. SAMPE Conf. , 1969 , p 541 – 549 27. Kalnin I.L. , Meisters H. , and Notarius H.J. , “ Characterization of Epoxy Resin Advancement in Fiber Reinforced Composite Prepregs ,” paper presented at the 26th Annual...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780383
EISBN: 978-1-62708-281-5
...-epoxy prepreg is laminated over the surface, and the epoxy and the adhesive are cured to set the wire position. Fig. 19 Cross section of a multiwire circuit board Structurally, RC-205 comes in the form of a resin-impregnated glass cloth sandwiched between two layers of adhesive. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860001
EISBN: 978-1-62708-338-6
... analysis. There are “B”-basis allowable data for fiber/resin combinations for 121 °C (250 °F)-curing prepreg for the aircraft composite component industry (e.g., AGATE) ( Ref 1.3 ), but there is no comparable database for filament-wound composites that use prepreg tow and wet resin-impregnated tow or...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860007
EISBN: 978-1-62708-338-6
... or handling device. Automatic resin-mixing systems with an on-demand level gage mounted in the resin bath can discharge a specified amount of premixed resin directly into the resin bath. Fully automatic tying on of wet or prepreg rovings to the mandrel was invented along with automatic cutting off of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870101
EISBN: 978-1-62708-314-0
.... Finer fabrics can be used on the surface to improve the surface finish, while heavier fabrics are used internally to reduce lay-up time. For vacuum bag–cured tools, gel coats may also be useful in improving the surface finish, while prepreg films or adhesive layers are often used for autoclave-cured...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870255
EISBN: 978-1-62708-314-0
.... , and Martin C.J. , “ Development of Core Crush Resistant Prepreg for Composite Sandwich Structures ,” 33rd International SAMPE Technical Conference , 5–8 Nov 2001 • Loken H.Y. , Nollen D.A. , Wardle M.W. , and Zahr G.E. , “ Water Ingression Resistant Thin Faced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
... y y     Hot-press molding 5 0.75 30 3370 6.0 65 y n y y n n n n y y     High-strength sheet molding compound 4–10 0.60–1.5 30 3370 3.0 30 y y y y n n n n y y     Prepreg 0.5–5 0.07–0.75 30 3370 6.0 65 y n n y n n n n y y     Vacuum bag...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... used for polymer matrix composites. Either unidirectional or woven cloth can be prepregged, or textile techniques such as weaving or braiding can be used to form a near-net preform. To form unidirectional prepreg, tows are precoated with the interfacial protection system and filament wound on a drum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... Source: Ref 8 Glass fibers are also available as both unidirectional and fabric prepreg that can be vacuum bag or autoclave molded. Again, E-glass, being fairly low in cost, is the most prevalent product form. For demanding aerospace applications, the higher-cost S-2 glass can be used. As shown...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860065
EISBN: 978-1-62708-338-6
..., where the weight of the deposited product and the tension on the fibers could excessively deform the mandrel during winding and/or cure. However, the resin, if wet, may flow during heated cure and could end up all at one end, if proper precautions are not taken. Typical use involves prepregs rather than...