ASTM-D5767 2004

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D5767-95(2004) Standard Test Methods for Instrumental Measurement of Distinctness-of-Image Gloss of Coating Surfaces

Published By	Publication Date	Number of Pages
ASTM	2004	6

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Categories: 25.220.01 - Surface treatment and coating in general, ASTM

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Description

1.1 This test method describes the measurement of the distinctness-of-image (DOI) gloss of coating surfaces using electro-optical measuring techniques. The coatings must be applied to planar rigid surfaces. The scale values obtained from the alternative methods cited do not agree.

1.2 Three test methods are covered as follows:

1.2.1 Test Method AGloss reflectance factor measurements are made on the specimen at the specular viewing angle and at an angle slightly off the specular viewing angle. The values obtained are combined to provide a DOI value. Very narrow source and receptor aperture angles are used in the measurements.

1.2.2 Test Method BThe light through a small slit is projected on the specimen surface and its reflected image intensity is measured through a sliding combed shutter to provide a value of image clarity.

1.2.3 Test Method CThe light through a pattern is projected on the specimen surface and its reflected image intensity is measured directly to provide a value of image clarity.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Significance and Use
2	Preparation and Selection of Test Specimens Correlation of Results of Test Methods A, B and C to Visual Perception of Image Distinction of Coating Surfaces Apparatus Reference Standards Standardization of Apparatus Procedure TABLE 1
3	Calculation Report Precision and Bias Apparatus FIG. 1
4	Reference Standards Standardization of Apparatus Procedure Calculation Report FIG. 2 FIG. 3
5	Precision and Bias Apparatus Reference Standards FIG. 4
6	Standardization of Apparatus Procedure Calculation Report Precision and Bias Keywords

Additional information

Standard Title	D5767-95(2004) Standard Test Methods for Instrumental Measurement of Distinctness-of-Image Gloss of Coating Surfaces
Published Code	ASTM
Publication Date	2004
Pages Count	6
ICS Codes	25.220.01 - Surface treatment and coating in general

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ASTM-D5767 2004

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