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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003408
EISBN: 978-1-62708-195-5
... Abstract This article reviews the history of prepreg and ply cutting technologies as well as outlines the options available for creating the necessary data and for nesting, cutting, and kitting the plies. It discusses the ways in which these steps influence the workflow for various applications...
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
... Abstract Prepreg hand lay-up process is versatile, reliable, cost-effective, and high quality process for fabricating large or small components. This article discusses the technique characteristics and applications of prepreg hand lay-up process. It describes the stages involved in the process...
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
...; multidirectionally reinforced fabrics; hybrid fabrics; woven fabric prepregs; unidirectional and multidirectional tape prepregs; and prepreg tow. The article discusses the three major categories of tape manufacturing processes, namely, hand lay-up, machine-cut patterns that are laid up by hand, and automatic machine...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003432
EISBN: 978-1-62708-195-5
... reaction. The article describes the component material tests, mixed resin system tests, and prepreg tests for the resin system. The tests include high-performance liquid chromatography, infrared spectroscopy, and gel permeation chromatography. The article contains a table that lists typical resin and...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003403
EISBN: 978-1-62708-195-5
... Abstract Composite tooling is the making of tools from composite materials. This article focuses on wet lay-up methods and techniques that are used to fabricate prepreg tooling. It discusses the advantages and disadvantages of composite tools. The article describes the process considerations...
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
... cured thermoset-matrix resins and prepregs. constituent materials chemical test physical test mechanical test reinforcement fibers reinforcement fabrics thermoset resin matrices thermoplastic resin matrices prepregs A COMPOSITE is composed of some form of reinforcement combined with a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... describes the functions, types, and chemical composition of fiber sizing agents. The article discusses the styles, properties, applications, and weaving methods of unidirectional, two-directional and multidirectionally reinforced fabrics. The article also reviews the use of prepreg resins in aerospace and...
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
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of a type of resin-matrix composites, carbon-epoxy composites. The fractographs illustrate the fracture modes found in composite prepregs, composite panels, solid rocket motor...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009074
EISBN: 978-1-62708-177-1
... unstaged and staged prepreg materials for optical analysis. boron fiber composites grinding mounting optical analysis polishing prepreg materials sample preparation sectioning titanium honeycomb composites titanium/polymeric composite hybrids METHODS AND MATERIALS most commonly used in...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009077
EISBN: 978-1-62708-177-1
... article describes the optical microscopy and bright-field illumination techniques involved in analyzing ply terminations, prepreg plies, splices, and fiber orientation to provide the insight necessary for optimizing composite structure and performance. bright-field illumination composite materials...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009080
EISBN: 978-1-62708-177-1
... Abstract This article describes the dispersed-phase toughening of thermoset matrices by the development of multiphase-structure thermosetting matrices using rubber and/or thermoplastic materials. It discusses two main methods for manufacturing prepregs, namely, single-pass impregnation and...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009083
EISBN: 978-1-62708-177-1
... geometric structure of a beehive, the honeycomb core imparts strength and light weight to sandwich panels, while supporting the prepreg skins. The honeycomb sandwich structure composite has high compressive strength in the direction of the cell walls and high shear strength in the plane perpendicular to the...
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
... following: Reinforcement and matrix separately (for in- process impregnation) Molding compound (randomly oriented, continuous or discontinuous reinforcement at a volume fraction typically in the range 0.1 to 0.3, reinforcement partly or completely impregnated) Prepreg (short for preimpregnated...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009071
EISBN: 978-1-62708-177-1
... made from carbon-black-filled epoxy resin and chopped glass fiber. Bright-field illumination, 65 mm macrophotograph montage. (b) Quasi-isotropic unidirectional prepreg laminate. Slightly uncrossed polarized light, 5× objective, montage. (c) 3k-70 woven carbon fabric laminate. Bright-field illumination...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009078
EISBN: 978-1-62708-177-1
... ). It is commonly found that water in the formulation is the volatile compound that produces voids in the composite part. It has been shown that as-received epoxy resins contain between 0.3 and 0.7 wt% water ( Ref 8 ). Furthermore, many prepreg-matrix formulations rapidly absorb moisture from ambient...
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
... spiral wrapping cylindrical tapered tubes TUBE ROLLING is the most widely used method of producing composite tubular parts that require high strength-to-weight properties as well as high production capabilities. The tube rolling process utilizes prepreg materials having accurate resin content, which...
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
... and verifications. The purpose of receiving inspection is to ensure that each lot of material falls within key chemical, processing, and end-product parameters. For prepregs these include component percentages (such as resin, fiber, and catalyst), contents of impurities, volatiles and voids, resin...
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
... make use of a wide range of dry reinforcements (unidirectional tapes and broadgoods), and is compatible with most core materials. A prepreg construction is more restrictive in terms of material options. While broadgoods are available, they are more costly than collimated unidirectional tapes. There are...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003366
EISBN: 978-1-62708-195-5
.... Process parameters are adjusted to achieve desired combination of flow, resin content, tack, and volatiles. The treated material, called prepreg , is rolled for storage and shipping. Phenolic prepregs offer significantly longer storage life than epoxy prepregs due to the nature of the phenolic chemistry...
Book Chapter

By Greg Kress
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003392
EISBN: 978-1-62708-195-5
...: Manufacturing methods: Wet lay-up, prepreg lay-up, fiber placement, tape lay-up, pultrusion, resin transfer molding (RTM), vacuum- assisted resin transfer molding, filament winding, compression molding, injection molding, centrifugal casting Processing equipment: Vacuum bagging, molds, ovens, autoclaves...