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BRACKET REMOVAL FROM COMPOSITE STRUCTURE USING NEAR INFRA-RED HEATER

IP.com Disclosure Number: IPCOM000250613D
Publication Date: 2017-Aug-09
Document File: 2 page(s) / 554K

Publishing Venue

The IP.com Prior Art Database

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BRACKET REMOVAL FROM COMPOSITE STRUCTURE USING NEAR INFRA-RED HEATER

Near Infrared heaters find application in plastic industries and manufacturing industries to soften plastics and also to activate adhesives. According to the invention, near infrared emitters are used to heat up a bracket and adhesive used to attach the bracket to a structure. Upon heating, the bonding strength of the adhesive decreases and the bracket can be removed or plucked out of its position easily without damaging an airframe. Infrared rays pass through the brackets and heat the adhesive faster than normal heating which relies on heating conduction capacity of the brackets. The prototype that is being developed will use readily available infrared emitters which are omega shaped. Using this omega infrared emitter, the tool is developed to isolate the infrared rays from damaging the airframe. Without the isolating case, the infrared can damage the airframe and also cause irritation to the operator. The tool is simple and is incorporated into a hand held device which can be used inside an aircraft structure.

The current method to remove the brackets involves using a hand scraper and a mallet. This method tends to cause delamination of the composite plies. The heating capacity of the emitter can be controlled by controlling the input voltage. By heating the adhesive in a controlled environment, it is possible to avoid delamination of the plies and remove the brackets. The heat transferred to the airframe...