Design and development of cure controller for bonded repair of aircraft structures13; 13;

Kamalakannan, GM and Subba Rao, M (2006) Design and development of cure controller for bonded repair of aircraft structures13; 13;. Technical Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

Cure Controller (CC) is a microcomputer-based portable system used for performing in-situ x2018;Bonded Repairsx2019; on aircraft structures. Bonded repair is performed using high temperature cured polymers through local heating of repair area under vacuum. These polymers require a controlled rate of heating, maintenance of stable temperature and controlled rate of cooling, all performed under vacuum, to realize good bonding characteristics.13; 13; The cure controller permits programming, storage, recall and execution of cure cycle appropriate to the polymer used and the geometry of the repair area. It controls the rate of heating and the temperature through a PID control algorithm and cycle time control technique. It meets the quality control requirements with features such as Multipoint temperature monitoring, Power failure management, Excess temperature control, Viewing and printing of set and acquired temperature data. This report describes the design and development of the first indigenous cure controller. It also discusses the cost effective signal conditioning solutions and novel software methods employed in the cure controller.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Bonded repair;Cure cycle programming;Ramp-soak temperature control;PID algorithm;Cycle time control
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Users 11 not found.
Date Deposited: 16 Jan 2009
Last Modified: 24 May 2010 04:11
URI: http://nal-ir.nal.res.in/id/eprint/1339

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