A Novel Approach to Monitor the Curing of Composite Materials in Closed Tools by the Use of Ultrasonic Spectroscopy

نویسندگان

  • Christian Pommer
  • Michael Sinapius
چکیده

With an ever broadening use of composite materials manufacturers are in high demand of 1 efficient curing cycles to reduce costs and speed up production cycles. One method to to archive this 2 goal is active cure monitoring to determine the exact time of curing needed. This article provides a 3 novel method to measure the cure inside of closed tools by using ultrasonic spectroscopy. For this a 4 simple experiment is used to show the change of the ultrasonic spectrum during the cure of an epoxy. 5 The results clearly show a direct correlation of amplitude and state of cure where the amplitude 6 reaches a global minimum at the glass point. 7

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تاریخ انتشار 2017