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Products tagged with 'aerospace corrosion'

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Picture for Development of reliable accelerated corrosion tests for aluminum alloys used in the aerospace industry
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Development of reliable accelerated corrosion tests for aluminum alloys used in the aerospace industry

Product Number: 51323-19133-SG
Author: Fabienne Peltier, Dominique Thierry
Publication Date: 2023
$20.00

Aluminum alloys exhibit good resistance to atmospheric corrosion due to the presence of a fine, passive oxide layer. Nevertheless, these alloys are not immune to corrosion which can take the form of localized corrosion like pitting, intergranular or exfoliation corrosion. Thus, the assessment of the corrosion behavior of aluminum alloys under atmospheric conditions is a major topic for many applications including the aerospace industry.
Picture for Predictive Coating Condition Model For Coating Lifetime Under Environmental Stressors
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Predictive Coating Condition Model For Coating Lifetime Under Environmental Stressors

Product Number: 51322-17685-SG
Author: Victoria Avance, Brandi Clark, Liam Agnew, Fritz Friedersdorf
Publication Date: 2022
$20.00

The corrosion of aircraft costs the U.S. Department of Defense billions of dollars annually and accounts for a significant portion of maintenance time and costs.1 Coatings are the most effective way to protect aircraft, but they have a finite lifetime and must be maintained or replaced before the underlying substrate is damaged by corrosion. Current aircraft maintenance practices call for coating inspections and maintenance based on elapsed time and not on measurements of coating health. Coating lifetime varies depending on the environmental stressors experienced in service, including temperature, humidity, and salt loading.
Picture for Real-Time Measurement of Aerospace Organic Coating Condition and Performance in Atmospheric Corrosion Conditions
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Real-Time Measurement of Aerospace Organic Coating Condition and Performance in Atmospheric Corrosion Conditions

Product Number: 51324-20742-SG
Author: Victoria Avance; Rebecca Marshall; Fritz Friedersdorf; Matthew Repasky; Henry Yuchi
Publication Date: 2024
$40.00
The purpose of this work is to develop a predictive coating condition model that processes continuous coating condition measurements to characterize changes in coating protection in atmospheric laboratory and outdoor environments. Zero resistance ammeter measurements across an interdigitated electrode composed of two different aerospace materials were used to monitor the inhibitive ability of a scribed coating and detect loss of inhibitor protection. Results will be presented that demonstrate the ability of a stochastic model to detect loss of inhibitor protection and predict coating failure in comparison to observational results. A description of the samples, electrochemical measurements, and test environments will be reported along with the approach used to extract parameters to model and predict coating performance.
Picture for Real-Time Measurement of Electrocoat, Powder Coat, and Organic Coatings for Atmospheric Galvanic Protection
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Real-Time Measurement of Electrocoat, Powder Coat, and Organic Coatings for Atmospheric Galvanic Protection

Product Number: 51324-20945-SG
Author: Victoria Avance; Fritz Friedersdorf
Publication Date: 2024
$40.00
In this laboratory work, zero resistance ammeter measurements were used to collect galvanic corrosion measurements for scribed organic coating samples and e-coated samples in situ. For this work, a new sample design was derived from samples currently used in the automotive industry consisting of a base plate and a cover plate of another material to form a galvanic couple with a crevice between them. The samples were connected to a developmental test system that uses zero resistance ammeter (ZRA) measurements to collect galvanic corrosion rates for multiple samples in situ. E-coated samples were evaluated in accelerated corrosion tests for comparison with traditional organic coatings. A description of the samples, electrochemical measurement device, and methods for coating testing will be reported along with the analysis of the resulting data and its implications for evaluating various coating types.
Picture for Real-time measurement of organic coating performance for atmospheric galvanic corrosion protection
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Real-time measurement of organic coating performance for atmospheric galvanic corrosion protection

Product Number: 51323-19036-SG
Author: Victoria Avance, Lindsay Davis, Brandi Clark, Fritz Friedersdorf
Publication Date: 2023
$20.00

The corrosion of aircraft costs the U.S. Department of Defense more than $20 billion annually and accounts for approximately 20% of all maintenance. Coatings are the most effective way to protect aircraft, but they have a finite lifetime and must be maintained or replaced before the underlying substrate is damaged by corrosion. Current aircraft maintenance practices call for coating inspections and repairs based on elapsed time and not on measurements of coating health.
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