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Products tagged with 'outdoor exposure'

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Picture for Enhanced Corrosion Management Analysis of Pipelines
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51317--9729-Enhanced Corrosion Management Analysis of Pipelines

Product Number: 51317--9729-SG
ISBN: 9729 2017 CP
Author: Angel Kowalski
Publication Date: 2017
$20.00

Pipeline Enhanced Corrosion Management Analysis (ECMA) was conducted over transmission pipelines that experienced considerable external metal loss after a short time in operation. Pipeline historical and current data, pipe design, construction, soil, corrosion control, monitoring, inspection and operational were reviewed.
Picture for Quantitative Comparison of Outdoor Sites and Accelerated Test Methods Using Optical Profilometry
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51317--9730-Quantitative Comparison of Outdoor Sites and Accelerated Test Methods Using Optical Profilometry

Product Number: 51317--9730-SG
ISBN: 9730 2017 CP
Author: David Jackson
Publication Date: 2017
$20.00

A quantitative technique was developed to assess the extent of corrosion damage in two sets of coated lap coupons: one exposed at several outdoor test sites and one that underwent both neutral and acidified salt fog testing. Techniques includeded imaging and analyzing the corroded surfaces with 3D optical profilometry.
Picture for Effects of Environmental Exposure on Mechanical and Barrier Properties of an Aircraft Coating System
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Effects of Environmental Exposure on Mechanical and Barrier Properties of an Aircraft Coating System

Product Number: 51324-21200-SG
Author: Attilio Arcari; Steven A. Policastro; Rachel M. Anderson; Carlos M. Hangarter; Erick B. Iezzi
Publication Date: 2024
$40.00
Laboratory and outdoor exposure testing can be used to provide controlled or well-characterized environments for understanding how environmental factors alter coating system properties that can be used to understand systems employed on aircraft. Accurate determination of the state of the coating system would help eliminate unnecessary paint removal operations and thereby reduce worker exposure to, and costs associated with, hazardous materials handling arising from paint removal and repainting operations. A commercial aircraft coating system was exposed to laboratory environmental stressors and outdoor exposure on an atmospheric exposure rack to mimic in-service environments. Equivalent circuit parameter values of electrochemical impedance spectroscopy (EIS) data were linked to mechanisms affecting the deterioration of the coating system in response to in-service environmental exposures. Laboratory and outdoor fatigue testing of the coating system and primer coating resulted in cracking of the coating layers. These cracks allowed faster ingress of electrolyte, as seen in EIS measurements, which would shorten the lifespan of the coatings. Area scans using a scanning Kelvin probe instrument were consistent with the EIS interpretation of fatigue degrading the coating barrier properties, while scanning electron microscopy (SEM) images showed an increased linear density of pretreatment cracks in the fatigued coating samples.
Outdoor Performance of One-Coat Systems Applicable to New Steel Bridges
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Outdoor Performance of One-Coat Systems Applicable to New Steel Bridges

Product Number: 41210-545-SG
Author: Yuan Yao, Seung-Kyoung Lee, Bob Kogler
Publication Date: 2010
$20.00

A two-year FHWA one-coat study was launched in November 2006 to evaluate various commercially available coating materials that can be applied as one-coat systems to new steel bridges. Seven one-coat systems, a 3-coat and a 2-coat control were selected and tested in three outdoor environments. 
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