Damage morphology and force-deflection curves for impact loading of thick multilayer organic protective coating systems

Momber, A. W.; Irmer, M.; Kelm, D.; Cherewko, V.

doi:10.1007/s11998-023-00829-9

Cited by 2 publications

(10 citation statements)

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“…They were specified for offshore wind power applications, and they were intended for the use in the tidal zone and in the splash zone 9 and exhibited a good resistance against mechanical loads. 5,10 Information on the individual coating systems is listed in Table 1. The epoxy layers of coating systems '1' and '4' contained glass flakes.…”

Section: Investigated Coating Systemsmentioning

confidence: 99%

“…The application of the coating systems and the steel substrate surface preparation were performed according to the specifications of the manufacturers. 5 The substrate was rolled flat steel (S355J2 + AR) with a thickness of 5 mm. All substrates were blast-cleaned according to a surface preparation degree of Sa 2½ according to ISO 8501-1.…”

Section: Investigated Coating Systemsmentioning

confidence: 99%

“…Impact force-deflection diagram with definitions for damage area, first maximum force (F 1 ), maximum force (F max ), deflection at first maximum curve (δ F1 ), and deflection at maximum force (δ Fmax ) for 'strong' intensity (20 J) impact. See Momber et al 5 for additional force-deflection diagrams.…”

Section: Investigated Coating Systemsmentioning

confidence: 99%

“…The response of multilayer organic OWEA coatings to impact loads has been in detail investigated in a previous paper. 5 Although there is a general requirement in offshore standards to configurate anticorrosive systems for storage and transport, 6 it is not fully implemented in coating specifications for OWEA applications. NACE 7 and VGB 8 prescribe threshold impact loads for offshore coatings.…”

Section: Introductionmentioning

confidence: 99%

“…(These standards specify the perpendicular impact of ball-shaped impactors.) A thorough review about the response of organic coatings to impact loads is provided in a previous paper, 5 where the reader may refer to Momber et al 5 also investigated the performance of multilayer offshore coatings under high impact loads (3-20 J) and estimated forcedeflection curves. Parameters that characterised the performance of the coatings were 5 : first force maximum (F 1 ), deflection at the first force maximum (δ F 1 ), maximum contact force (F max ), and deflection at the maximum contact force (δ max ).…”

Section: Introductionmentioning

confidence: 99%

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Effects of impact damages on the performance of offshore wind power coatings after accelerated ageing

Momber,

Marquardt,

Irmer

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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Damages to multilayer organic coating systems due to impact loads can deteriorate the corrosion protection performance of the coatings under offshore exposure. The contribution is concerned with statistical investigations into the effects of load-based and coating-based factors on the protection performance of impinged coating systems for offshore wind power structures. Accelerated cyclic laboratory tests were performed on damaged multilayer coating systems, and the results were statistically analysed. Results of analysis of variance revealed that the effects on the integral corrosion protection performance of the coatings (anticorrosive effect, AE) were dominated by the factor ‘load intensity’ (impact energy). This factor could explain 34% of all effects. It also was the only significant factor. The load-based factor ‘damage area’ affected the coating delamination and was extremely significant, but it did not affect the AE. Coating-based factors, namely ‘coating system’, ‘total dry film thickness’ and ‘pull-off strength’, did not deliver effects to AE and were statistically insignificant. The factor ‘coating system’ was statistically insignificant for delamination and for AE. ‘Unknown’ effects, not considered in this study, delivered the highest contributions to the regression models (50% to 68%), indicating that additional parameters/factors of the coating systems must be considered when developing impact-resistant coatings.

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Section: Investigated Coating Systemsmentioning

confidence: 99%

Section: Investigated Coating Systemsmentioning

confidence: 99%

Section: Investigated Coating Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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