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(Testing) In Line 3D Characterization of Substrates Through Final Coat

Picture for Coatings + Proceedings 2021-ALL Papers

A variety of systems can characterize the properties of final painted surfaces in production to optimize appearance. In order to properly control and improve the coating process, rapid, large-area 3D measurement capability is needed that can work at all stages, from initial raw substrates to the final clear coat. Recent research has identified the key spatial wavelengths of interest and worked to correlate various calculations of surface texture with subjective appearance of the coated surfaces.

Product Number: 01-COAT_DEC21
Author: Erik Novak / Daniel Greene
Publication Date: 2021
Industry: Coatings
$0.00
$20.00
$20.00

A variety of systems can characterize the properties of final painted surfaces in production to optimize appearance. In order to properly control and improve the coating process, rapid, large-area 3D measurement capability is needed that can work at all stages, from initial raw substrates to the final clear coat. Recent research has identified the key spatial wavelengths of interest and worked to correlate various calculations of surface texture with subjective appearance of the coated surfaces. Being able to measure raw as well as coated surfaces with one system is especially important as more materials are used for a single vehicle: steel, aluminum, plastic, and composites. Rapid, complete characterization allows sufficient feedback into the process to identify problems before most value-add operations, while also still allowing simple pass/fail results to day-to-day inspection.
Systems to perform these measurements were previously limited to the laboratory and took minutes to hours to measure enough surface area for statistically valid results. This paper will discuss the first hand-held, shop floor system that can rapidly measure almost any surface texture or material in-situ. This allows rapid process feedback and to improve quality and reduce costs. Various coated and uncoated samples will be measured and results presented. Additionally, the system’s repeatability and reproducibility across various materials and environments will be presented to prove its robustness and suitability for production process control.

A variety of systems can characterize the properties of final painted surfaces in production to optimize appearance. In order to properly control and improve the coating process, rapid, large-area 3D measurement capability is needed that can work at all stages, from initial raw substrates to the final clear coat. Recent research has identified the key spatial wavelengths of interest and worked to correlate various calculations of surface texture with subjective appearance of the coated surfaces. Being able to measure raw as well as coated surfaces with one system is especially important as more materials are used for a single vehicle: steel, aluminum, plastic, and composites. Rapid, complete characterization allows sufficient feedback into the process to identify problems before most value-add operations, while also still allowing simple pass/fail results to day-to-day inspection.
Systems to perform these measurements were previously limited to the laboratory and took minutes to hours to measure enough surface area for statistically valid results. This paper will discuss the first hand-held, shop floor system that can rapidly measure almost any surface texture or material in-situ. This allows rapid process feedback and to improve quality and reduce costs. Various coated and uncoated samples will be measured and results presented. Additionally, the system’s repeatability and reproducibility across various materials and environments will be presented to prove its robustness and suitability for production process control.

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(Pipeline, Oil & Gas) Advantages of a True 100% Epoxy, Pipeline Coating in Cold Weather vs. The Comm

Product Number: 22-COAT_DEC21
Author: Nicholas Barnett
Publication Date: 2021
$20.00

Coating systems are critical in the mitigation of corrosion on pipelines and their integrated parts.
Epoxies offer a multitude of positive characteristics including: high adhesion at a chemical level,
excellent abrasion resistance, and reduced water permeation rates when compared to vinyl
esters. A newly engineered cold weather epoxy (“Epoxy-20F”) improves upon these epoxy
characteristics and exceeds that of vinyl esters.
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(Surface Prep) Power Tool Surface Preparation in Shipyards

Product Number: 64-COAT_DEC21
Author: Eric Shoyer
Publication Date: 2021
$20.00

Power tool cleaning has been a common method of surface preparation prior to coating application since the dawn of steel shipbuilding. Power tools are usually handheld pneumatic, or sometimes electric, devices that through impacting or abrasive action can remove coating and corrosion. Most commonly power tool cleaning has been used for re-work or coating repair associated with outfitting. Typically, power tools are limited to the touch up or repair of small areas or areas that cannot be accessed by bulkier equipment such as abrasive blasters.
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(Concrete) Caveat Emptor! Preparing Cementitious Mortars to Support High-Performance Lining Systems

Product Number: 34-COAT_DEC21
Author: Vaughn O’Dea
Publication Date: 2021
$20.00

Cementitious repair mortars are commonly used to rehabilitate deteriorated wastewater concrete infrastructure prior to the application of high-performance lining systems. These repair mortars occasionally receive a broom finish creating a “profiled” surface prior to the application of a trowel- or spray-applied protective lining system. Other recommendations require that that the cementitious mortars receive a blasted surface to impart a mechanical profile prior to topcoating with a similar lining system. In the following paper the author summarize the results of an investigation to quantitatively assess adhesion of a protective lining when applied to a broom finish surface verses a blasted surface.
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