ASTM D Standard Test Method for Specular Gloss. ASTM D Standard test method for specular gloss ASTM International offers global access to standards development for over participating countries. 21 มี.ค. แจก ASTM D, Standard Test Method for Specular Gloss. Link down load: ire 6he8e9czn. The customer isn’t.
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A number in parentheses indicates the year of last reapproval. AS MTD To apply the correction, 3 Sold to: Current edition approved March 31, This paper is out of print. Such standards should be checked periodically for constancy by comparing with primary standards.
This does not include variability due to preparation of panels in different laboratories. Preparation and Selection of Test Specimens 8. A study of the effect of geometric conditions on results of gloss tests with special attention to high-gloss panels. The axis of the receptor shall be at the mirror reection of the axis of the incident beam. The luminous ux entering the receiver aperture from the perfect white diffusor would give the following gloss indications for each of the geometries: Clean the standards in warm water and a mild detergent solution brushing gently with a soft nylon brush.
NOTE 3—Polished black glass has been reported to change in refractive index with time largely due to chemical contamination It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Test Method E includes techniques for the measurement of both distinctness-of-image gloss and reection haze.
If the document is revised or amended, you will be notified by email. Cone and Plate Viscometer.
This standard has been approved for use by agencies of the Department of Defense. Do not wipe standards. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The dimensions and tolerance of the source and receptor shall be as indicated in Table 1. Gloss Meter for Curved Surfaces.
Already Subscribed to this asmt. For specimens with brush marks or similar texture effects, place them in such a way that the directions of the marks are parallel to the plane of the axes of the incident and reected beams.
Also, Journal of Research, Nat. NOTE 1—The parallel-beam glossmeters r523-89 the better uniformity of principle-ray angle of reection, but the converging-beam glossmeters possess the better uniformity in extent of angular divergence accepted for measurement.
แจก ASTM D523-89, Standard Test Method for Specular Gloss.
The geometry of angles and apertures is chosen so that these procedures may be used as s523-89 To measure the correction, illuminate the specimen perpendicularly and view at the incident angle with the receiver asrm specied in 6.
Subscription pricing is determined by: Contains photographs depicting gloss characteristics of a variety of methods. Your Alert Profile lists the documents that will be monitored. Since specular reectance depends also on the surface refractive index of the specimen, the measured gloss ratings change as the surface refractive index changes.
This standard is also available to be included in Standards Subscriptions. Compares visual difference ratings with instrumental measurements of specular gloss, distinctness of image gloss, and haze for series of black, gray, and white painted specimens.
ASTM D – 89() Standard Test Method for Specular Gloss
NOTE 2—Polarization—An evaluation of the impact of polarization on gloss measurement has been reported What difference in gloss can a human see? Signicance and Use 5.
History of Test Method D Never place standards face down on a surface that may be dirty or abrasive. The geometric conditions of test later incorporated in Test D5523-89 D are recommended. The gloss value for glass of any other refractive index can be computed from the Fresnel equation 5. Very similar to ISO