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vacuum infusion

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Published: 01 November 2010
Fig. 2.9 Vacuum infusion apparatus used for removing entrapped air in the mounting resin before it is added to the mold. In this apparatus, vacuum is maintained in the chamber. The mold is placed under the chamber, and a tube for resin transport is placed above the sample that connects More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
... prepreg lay-up pultrusion resin film infusion resin transfer molding thermoset composites vacuum bagging wet lay-up THE MAJOR THERMOSET composite fabrication processes for continuous-fiber composites, including lay-up, vacuum bagging, and curing are covered in this chapter. Three lay-up...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030023
EISBN: 978-1-62708-349-2
...). It is not advised to oven cure the mounted specimens at elevated temperature. Although this increases the cure speed, it also leads to greater cure shrinkage of the mounting resin. To ensure complete impregnation of the specimens, the mold can be placed in a vacuum chamber while infusing the resin ( Fig. 2.9...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... tape lay-up of prepreg materials, resin transfer molding, vacuum-assisted resin transfer molding, resin film infusion, wet lay-up, filament winding, pultrusion, and compression molding of sheet molding or bulk molding compound. While these processes are general in description, the actual process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300335
EISBN: 978-1-62708-323-2
... Abstract This chapter covers coatings and treatments that are used to improve the friction and wear behaviors of materials. It describes modifications that work by hardening contacting surfaces, including heat treating, vacuum coating, thermal spray, and plating, and those that separate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2011
DOI: 10.31399/asm.tb.cfw.t52860151
EISBN: 978-1-62708-338-6
... stage in the reaction of cer- carbon. tain thermosetting resins in which the mate- catalyst. A substance that changes the rate of a rial is practically insoluble and infusible. chemical reaction without itself undergoing a Sometimes referred to as resite. The resin in a permanent change in composition...
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 then stop when they meet sufficient resistance. A normal practice is to allow up to three layers of foaming adhesive to fill gaps between core sections. Larger gaps call for rework or replacement of the core section. It is also important not to process some foaming adhesives under a vacuum, or excessive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
.... Not to be confused with particle Introducing air into a solution by spraying, hardness. stirring, or a similar method. (4) Supplying or infusing with air, as in sand or soil. apparent pore volume. The total pore volume of a loose powder mass or a green compact. It agitator. A device to intensify mixing. may...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
...). In 2007, nearly 50,000 blades for 17,000 turbines were delivered, representing roughly 400 million pounds of composites. The predominant material is continuous glass fibers manufactured by either lay-up or resin infusion. Fig. 8.11 Composite energy-generation applications. Composites are being used...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
... space devices are often done in dry nitrogen. For some reason, this approximates the vacuum conditions of outer space. Of course, a vacuum is the operating environment in outer space, and tests conducted on air and in vacuum show that friction may indeed be significantly affected by the absence...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250077
EISBN: 978-1-62708-345-4
... permanently infusible ( Ref 2 ). If excessive heat is applied to a thermoset material after the chemical change has taken place, the plastic is degraded rather than melted. Before the processing, the molecular structure of the thermoset plastic is similar to that of a thermoplastic material. Heating permits...
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
... matrices for advanced composites are classified as either thermosets or thermoplastics. Thermosets are low molecular weight, low viscosity monomers (≈2000 centipoise) that are converted during curing into three-dimensional crosslinked structures that are infusible and insoluble. Crosslinking ( Fig. 3.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
...-dimensional crosslinked structures that are infusible and insoluble. Crosslinking results from chemical reactions that are driven by heat generated either by the chemical reactions themselves (i.e., exothermic heat of reaction) or by externally supplied heat. As curing progresses, the reactions accelerate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110550
EISBN: 978-1-62708-247-1
... are suspected to be the cause of a defect, a dye penetrant can be infused into the sample before encapsulating it in epoxy. This is done by submerging the sample in a resin mixed with dye that is visible in a UV (Ultra-Violet) microscope. The submerged sample is then placed in a vacuum to remove any air...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560427
EISBN: 978-1-62708-291-4
... crystal structure. When it occurs as a phase in steel, the chemical composition will be altered by the presence of manganese and other carbide-forming elements. charcoal. A porous, black, infusible product resulting from the distillation of wood that drives off most of the volatile matter. coherent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.9781627083126
EISBN: 978-1-62708-312-6
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030380
EISBN: 978-1-62708-282-2
... with absorption. aeration. (1) Exposing to the action of air. (2) Causing air to bubble through. (3) Introducing air into a solution by spraying, stirring, or a similar method. (4) Supplying or infusing with air, as in sand or soil. aeration cell (oxygen cell). See differential aeration cell. age hardening...