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composite prepreg

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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
... 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 Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003032
EISBN: 978-1-62708-200-6
... layups, and fiber-fabric prepreg composites for different applications to match pressure, temperature, service life, weight, and cost requirements ( Ref 1 , 8 , 43 ). This section focuses on seven fabric forms: Epoxy resin with and without E-glass fiber reinforcement Glass-fabric-reinforced...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
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 Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... Abstract Ceramic-matrix composites (CMCs) are being developed for a number of high-temperature and high-performance applications in industrial, aerospace, and energy conservation sectors. This article focuses on processing, fabrication, testing, and characterization methods of CMCs, namely...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003031
EISBN: 978-1-62708-200-6
... combinations of unidirectional fiber ribbons or woven fabrics with resin are called prepregs. Using prepregs rather than in-line impregnation of the fibers during the final composite fabrication process can offer significant advantages. Prepregs can have very precisely controlled fiber/resin ratios, highly...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
... selection of the thermoplastic is necessary if solvents are likely to be present. The ideal (future) material for repairing composites should have a significant number of positive characteristics, including, but not limited to, the following: It should be a one-part prepreg, so that repair...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... Abstract The structural efficiency of a composite structure is established by its joints and assembly. Adhesive bonding, mechanical fastening, and fusion bonding are three types of joining methods for polymer-matrix composites. This article provides information on surface treatment and the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... consistency from batch to batch or roll to roll. Variations in prepreg can cause processing problems when fabricating composite details. Lay-up procedures must be consistent with the drawings for orientation control, and processing specifications must be consistent for handling, debulking, and other...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... cutting system rests the prepreg sheet on a table with a rolling slot to handle very large parts. A problem with graphite-reinforced composites is that the graphite fibers are good thermal conductors and cause the resin to cure near the edge of the cut, which is undesirable. Cured graphite-epoxy...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003005
EISBN: 978-1-62708-200-6
... materials, including ferrous alloys, nonferrous alloys, ceramics, cermets and cemented carbides, engineering plastics, polymer-matrix composites, metal-matrix composites, ceramic-matrix and carbon-carbon composites, and reviews their general property characteristics and applications. It describes the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003036
EISBN: 978-1-62708-200-6
... capability for highly contoured parts As advanced composite fibers became increasingly available, they were woven into fabrics, establishing a need for systems that could cut plies from fabric prepreg and wide-tape broad goods. The commercial technology provided two solutions: die cutting, and computer...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
... Abstract Thermal analysis provides a powerful tool for researchers and engineers in determining both unknown and reproducible behavioral properties of polymer molecules. This article covers the thermal analysis and thermal properties of engineering plastics with respect to chemical composition...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003008
EISBN: 978-1-62708-200-6
... resin matrix in an advanced composite prepreg for the automatic filament winding of an airframe panel, the resin cost is insignificant compared with the total assembly cost (the total resin volume is small, as well). Material costs become increasingly significant with higher volume and less critical...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006454
EISBN: 978-1-62708-190-0
... instrumentation principles of acoustic emission and reviews the role of acoustic emission in materials studies. The article illustrates the testing of metal-matrix composites (MMCs) using acoustic emission and the use of acoustic emission inspection in production quality control. It concludes with information on...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003040
EISBN: 978-1-62708-200-6
... stability, and damage resistance. Many intricate material placement techniques can be transferred to and modified for composite prepreg fabrication processes. The extension of two-dimensional braiding to three-dimensional braiding has opened up new opportunities in the near-net shape manufacturing of high...
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
..., helical (or modified helical), or hoop. The most important advantage of filament winding is the cost, which is less than the prepreg cost for most composites ( Ref 1 ). These lower costs are possible in filament winding because a relatively expensive fiber can be combined with an inexpensive resin to...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003041
EISBN: 978-1-62708-200-6
... fabric or other absorbent materials or fabrics are used for this purpose. The amount of bleeder used is a function of its absorbency, the fiber volume desired in the part, and the resin content of the prepreg material used in the layup. In advanced composites, essentially all excess resin is bled from...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003010
EISBN: 978-1-62708-200-6
... structural composite and film adhesive applications requiring tack and drape. Hard prepolymers are useful for compression molding and solution impregnation of woven fabrics, particularly prepregs used to manufacture circuit boards. Figure 8 compares the melt viscosities of representative cyanate resins...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003034
EISBN: 978-1-62708-200-6
... a higher loading of reinforcement. One method is to pull reinforcement from a roving form through a dip tank of resin varnish, evaporate the solvent, and chop to length. Prepreg fabric can also be diced or chopped, with fabric used as the reinforcement. The resultant fabric is in a macerated form...