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Predicting Accumulated Galvanic Corrosion Damage Using A Service Life Model

Picture for Predicting Accumulated Galvanic Corrosion Damage Using A Service Life Model
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Aircraft and similar structures are exposed to many different types of environmental conditions over their operational life and this very much determines the type of damage they experience. For example sea based aircraft experience a much more aggressive environment than land based aircraft. Therefore it is critical to know the environmental exposure of an aircraft over the course of its lifetime to make meaningful predictions of accumulated corrosion damage.Computer simulation models have been demonstrated to be able to predict the rate of corrosion and the incidence of pitting but they require information on the electrolyte thickness conductivity/corrosivity and the polarization properties of the material. Therefore to use a computational model to predict the corrosion rate for an aircraft at a particular point of time during its service we would have to define the model parameters at that time as well as the exposure history.In this paper a service life model concept is developed based on environmental data collected using sensors combined with a galvanic corrosion simulation model. The galvanic simulation model input data is identified from the sensor data to predict the accumulation of corrosion damage. Applications of the model are presented and discussed.The approach is applicable not only to aircraft but to a wide range of structures.

Product Number: 51319-13292-SG
Author: Robert Adey
Publication Date: 2019
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$20.00
$20.00
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