意味と目的
5.1 多くのコーティング特性は乾燥膜厚に大きく影響されます, 接着などの, 柔軟性, 着る, 耐久性, chemical resistance, and hardness. In order to be able to compare the results obtained by different operators, the film thickness needs to be carefully measured.

5.2 Most protective and high performance coatings are designed to meet the requirements or specifications for the dry film thickness of each coating or the whole system or both. Coatings need to be applied within certain minimum and maximum thickness tolerances so that they can perform their intended function. In addition to potential performance defects, it is uneconomical to use more material than necessary when coating large areas such as floors and walls.

5.3 Occasionally low readings may occur on coatings with rough surfaces. The instrument can allow the user to adjust to prevent this.

5.4 This test method may not be suitable for measuring the thickness of organic coatings on all substrates. The ability of the instrument to detect different interfaces between the coating and the substrate may be hampered if the composition, 密度, or attenuation of the coating and the substrate are similar, or if the coating is not uniform. If these conditions are considered, verify the operation on a coating/substrate combination of known thickness.

5.5 The multilayer coating has many interfaces, and the instrument will measure the interface separating the two materials with the greatest acoustic difference. Some instruments are able to detect and measure the thickness of individual layers in multi-layer systems.

5.6 The use of this test method is not necessarily limited by the type of substrate material.

ASTM D 6132-2020 “非破壊法によりコンクリートに塗布された有機塗料の乾燥膜厚測定 (つまり. 超音波装置の使用)”

の範囲
1.1 The test method describes the accurate and nondestructive measurement of dry film thickness of organic coatings applied to substrates of different materials using ultrasonic film thickness gauges. Measurements can be made on field structures, commercially manufactured products, or laboratory test samples. These types of gauges can accurately measure the dry film thickness of organic coatings on various substrates such as concrete, wood, wall panels, プラスチック, fiber composites, and metals.

1.2 The test method is not applicable to coatings that are prone to deform under the load of the measuring instrument because the instrument probe is placed directly on the surface of the coating for reading.

1.3 The effective range of instruments using ultrasonic principles is limited by the design of measuring tools. Thickness ranges from 8 μmから 7.60 んん (0.3 に 300 ミル).

1.4 SI 単位で表された値は標準値として考慮される必要があります。. 他の測定単位はこの規格には含まれていません.

1.5 この規格は、すべての安全問題に対処することを目的としたものではありません, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格の使用者の責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.6 この国際規格は、国際規格開発の原則に関する決定で確立された国際的に認められた標準化原則に従って開発されました。, 世界貿易機関の貿易の技術的障壁に関する委員会が発行したガイドラインと勧告.