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Record 1 of 6044
Induction Bonding of Prepreg Tape and Titanium Foil
Author and Affiliation:
Messier, Bernadette C.(Old Dominion Univ., Norfolk, VA United States)
Hinkley, Jeffrey A.(NASA Langley Research Center, Hampton, VA United States)
Johnston, Norman J.(Old Dominion Univ., Norfolk, VA United States)
Abstract: Hybrid structural laminates made of titanium foil and carbon fiber reinforced polymer composite offer a potential for improved performance in aircraft structural applications. To obtain information needed for the automated fabrication of hybrid laminates, a series of bench scale tests were conducted of the magnetic induction bonding of titanium foil and thermoplastic prepreg tape. Foil and prepreg specimens were placed in the gap of a toroid magnet mounted in a bench press. Several magnet power supplies were used to study power at levels from 0.5 to 1.75 kW and frequencies from 50 to 120 kHz. Sol-gel surface-treated titanium foil, 0.0125 cm thick, and PIXA/IM7 prepreg tape were used in several lay-up configurations. Data were obtained on wedge peel bond strength, heating rate, and temperature ramp over a range of magnet power levels and frequencies at different "power-on" times for several magnet gap dimensions. These data will be utilized in assessing the potential for automated processing. Peel strengths of foil-tape bonds depended on the maximum temperature reached during heating and on the applied pressure. Maximum peel strengths were achieved at 1.25kW and 8OkHz. Induction heating of the foil appears to be capable of good bonding up to 10 plies of tape. Heat transfer calculations indicate that a 20-40 C temperature difference exists across the tape thickness during heat-up.
Publication Date: Jan 01, 1998
Document ID:
19990042394
(Acquired Jun 11, 1999)
Subject Category: COMPOSITE MATERIALS
Document Type: Reprint
Publication Information: 43rd International SAMPE Symposium and Exhibition; p. 1394-1409; Volume 43; Book 2
Meeting Information: 31 May - 4 Jun. 1998; Anaheim, CA; United States
Meeting Sponsor: Society for the Advancement of Materials and Process Engineering; Covina, CA United States
Financial Sponsor: NASA Langley Research Center; Hampton, VA United States
Organization Source: NASA Langley Research Center; Hampton, VA United States
Description: 11p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: METAL FOILS; BONDING; PREPREGS; CARBON FIBERS; FIBER COMPOSITES; AIRCRAFT STRUCTURES; MAGNETIC INDUCTION; METAL BONDING; MECHANICAL PROPERTIES; THERMOPLASTICITY; STRUCTURAL DESIGN; TEMPERATURE GRADIENTS; LAMINATES; INDUCTION HEATING
Availability Source: Other Sources
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