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  • MECHANICAL ENGINEERING  (4)
  • CHEMISTRY AND MATERIALS (GENERAL)  (1)
  • 1
    facet.materialart.
    Unknown
    In:  Other Sources
    Publication Date: 2011-08-19
    Description: The use of filament winding (FW) in the production of aerospace composite structures is examined. The FW process applies spools of fiber and prepreg tow or prepreg tape to a male mandrel; the process is more efficient and cost effective than metallic construction. The fibers used in FW and the curing process are explained. The reduced storage and fabrication costs that result from FW are discussed. The use of FW to produce a filament-wound case for a solid rocket motor and the substructure and skin of an aircraft fuselage are described. Areas which require further development in order to expand the use of FW are listed and discussed.
    Keywords: MECHANICAL ENGINEERING
    Type: Aerospace America (ISSN 0740-722X); 24; 44-46
    Format: text
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  • 2
    Publication Date: 2011-08-19
    Keywords: MECHANICAL ENGINEERING
    Type: Journal of Aircraft (ISSN 0021-8669); 23; 545
    Format: text
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  • 3
    Publication Date: 2019-06-28
    Description: Rapid adhesive bonding (RAB) concepts utilize a toroid induction technique to heat the adhesive bond line directly. This technique was used to bond titanium overlap shear specimens with 3 advanced thermoplastic adhesives and APC-2 (graphite/PEEK) composites with PEEK film. Bond strengths equivalent to standard heated-platen press bonds were produced with large reductions in process time. RAB produced very strong bonds in APC-2 adherend specimens; the APC-2 adherends were highly resistant to delamination. Thermal cycling did not significantly affect the shear strengths of RAB titanium bonds with polyimide adhesives. A simple ultrasonic non-destructive evaluation process was found promising for evaluating bond quality.
    Keywords: MECHANICAL ENGINEERING
    Type: AIAA PAPER 85-0750
    Format: text
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  • 4
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-07-13
    Description: A compilation of papers presented in a joint NASA, American Society for Metals, The George Washington University, American Welding Soceity, and Society of Manufacturing Engineers conference on Welding, Bonding, and Fastening at Langley Research Center, Hampton, VA, on October 23 to 25, 1984 is given. Papers were presented on technology developed in current research programs relevant to welding, bonding, and fastening of structural materials required in fabricating structures and mechanical systems used in the aerospace, hydrospace, and automotive industries. Topics covered in the conference included equipment, hardware and materials used when welding, brazing, and soldering, mechanical fastening, explosive welding, use of unique selected joining techniques, adhesives bonding, and nondestructive evaluation. A concept of the factory of the future was presented, followed by advanced welding techniques, automated equipment for welding, welding in a cryogenic atmosphere, blind fastening, stress corrosion resistant fasteners, fastening equipment, explosive welding of different configurations and materials, solid-state bonding, electron beam welding, new adhesives, effects of cryogenics on adhesives, and new techniques and equipment for adhesive bonding.
    Keywords: CHEMISTRY AND MATERIALS (GENERAL)
    Type: NASA-CP-2387 , L-16023 , NAS 1.55:2387 , Oct 23, 1984 - Oct 25, 1984; Hampton, VA; United States
    Format: application/pdf
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  • 5
    Publication Date: 2019-07-13
    Description: The NASA Langley Research Center has developed bonding concepts for aerospace composite materials which employ induction heating to directly apply heat to the bond line and/or adherends without simultaneously heating the entire structure, supports, and fixtures of a bonding assembly. These methods have demonstrated bonding process time reductions of two to three orders of magnitude, by comparison with conventional press molding. Attention is presently given to rapid adhesive bonding for lap shear specimens for aerospace panel bonding or field repair, as well as for the field repair requirements of metallic and advanced polymeric matrix composite structures.
    Keywords: MECHANICAL ENGINEERING
    Type: National Technical Conference; Oct 09, 1984 - Oct 11, 1984; Albuquerque, NM
    Format: text
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