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roving dimensions

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003353
EISBN: 978-1-62708-195-5
... of payout in subsequent operations. The yield (meter per kilogram, or yard per pound) of the finished roving is determined by the number of input ends and the yield of the input strand or sliver. Final package weight and dimensions can be made to vary widely, depending upon the required end-use. Figure 4...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003038
EISBN: 978-1-62708-200-6
... to the same dimensions as steel or aluminum supports. Cable trays of steel are being replaced by pultruded composite cable trays because of their superior corrosion resistance and better electrical insulation values. Pultruded solid rectangular and square bars are being used in transformers to separate...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003417
EISBN: 978-1-62708-195-5
... machine are the reinforcement handling system (referred to as roving and mat creels), the resin impregnation station, and the material forming (or preforming) area. The pultrusion machine consists of component equipment that heats the input materials, cures the reactive resin, pulls the product through...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
... the microstructure of the component. The type of reinforcement—continuous fiber, short fiber, whiskers, chopped roving, woven or braided fabrics, or preforms—and its orientation greatly affect the performance of the component. Indeed, the ability to tailor a component increases its range of functionality as well...
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 Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003415
EISBN: 978-1-62708-195-5
... and curing (thermoset material) effects on shrinkage. This provides the engineer with useful information about the dimension stability of the final part. The program also calculates using anisotropic material properties, which can be imported to other computer-aided engineering processors for structural...
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 number of fiber ends. They may be purchased in continuous lengths, or chopped to dimension. The diversity of physical properties is one of the benefits of carbon fibers but is also a problem because complete evaluation is expensive. Certain generalizations can be made about the types of fibers available...
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
... the warp and fill directions. This is done by simply measuring the dimensions of an undistorted fabric and removing and counting each thread. Data should be reported as the number of warp threads/mm (warp threads/in.) and number of fill threads/mm (fill threads/in.). Fabric Areal Weight Fabric areal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003035
EISBN: 978-1-62708-200-6
..., which cuts glass roving into 25.4 mm (1 in.) lengths. After the glass falls to the resin bed, another carrier film with another layer of paste is added on top, sandwiching the glass between the two layers. When the paste is first mixed and put in the SMC machine, it has the consistency of pancake...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003036
EISBN: 978-1-62708-200-6
... several forms. A chopped-strand mat consists of short fibers held together with a binder. Mats are classified by the fiber length and weight per unit area. Woven fabric consists of glass yarns or tows of various diameters that are woven into fabrics of a specified weave and fiber count. Woven rovings...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... is the ability to use cores in the design of a component. Core materials are typically foam, but may be any material that provides the desired functionality while retaining its dimensions during the heat and pressure encountered in the molding cycle. The use of cores in sheet molding compound (SMC...
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
..., the solvent has to be volatilized and the resin advanced to a moldable viscosity. Other methods of manufacture are used to obtain a longer chop length or 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...
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
... of the braiding yarns. At the point of braiding, a former is often used to control the dimension and shape of the braid. The braid is then delivered through the take-up roll at a predetermined rate. If the number of carriers and take-up speed are properly selected, the orientation of the yarn (braiding angle...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.9781627082006
EISBN: 978-1-62708-200-6
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
.... In order to produce efficient foil shapes for both the keel and rudder, there are restrictions on the section size, and hence the design becomes dimension-limited. In most cases, ultimate strength is the primary design constraint, but increasingly with deep slender foils, stiffness is also a concern...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003370
EISBN: 978-1-62708-195-5
... amount of resin filler paste onto a plastic carrier film. The paste consists of several ingredients, which can be changed to fit the particular needs of specific processing conditions and applications. The carrier film passes under a chopper, which cuts glass roving into 25 mm (1 in.) lengths. After...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003389
EISBN: 978-1-62708-195-5
... lamina, roving, braids, woven fabrics, sandwich, or chopped random mats (see the Section “Constituent Materials” in this Volume) may exhibit different macromechanical response. Thus, the computation of basic layer/lamina/ply-level elastic constants from its material constituents (fiber, matrix...
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
.... Diallyl phthalate molding compounds have a high degree of dimensional stability when molded, and if properly cured, will not vary appreciably with different cure times. Mold temperatures may slightly affect part dimensions with differences in the coefficient of thermal expansion. The degree of cure...
Book Chapter

By Frank K. Ko
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003361
EISBN: 978-1-62708-195-5
... the carriers around in a maypole fashion. The carriers are devices that carry the yarn packages around the tracks and control the tension of the braiding yarns. At the point of braiding, a former is often used to control the dimension and shape of the braid. The braid is then delivered through the take-up roll...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003395
EISBN: 978-1-62708-195-5
... material has been selected, the design must still address the microstructure of the component. The type of reinforcement—continuous fiber, short fiber, whiskers, chopped roving, woven or braided fabrics, and preforms—and its orientation greatly affect the performance of the component. Indeed, the ability...