ASTM D523-89 PDF
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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The values given in parentheses are for information only. This does not include variability due to preparation of panels in different laboratories.
แจก ASTM D523-89, Standard Test Method for Specular Gloss.
The data are analyzed by multidimensional scaling. The polished black glass high-gloss standard may be dabbed gently with x523-89 lint-free paper towel or other lint-free absorbent material.
Rhopoint IQ Flex Such standards should be checked periodically for constancy by comparing with primary standards. DIN Testing of paper and board; reflectometer as means for gloss Assessment of paper and board. If the reading is not within How is Gloss Measured? NOTE 3—Polished black glass has been reported to change in refractive index with time largely due to chemical contamination Gloss Meter for Curved Surfaces. What difference in gloss can a human see?
History of Test Method D Please first verify your email before subscribing to alerts. For larger specimens, take a proportionately greater number of readings. Users of this standard are expressly advised that determination of the validity asm any such f523-89 rights, and the risk of infringement of such rights, are entirely their own responsibility.
Subscription pricing is determined by: With atsm at piece of polished black glass or other front-surface mirror in the specimen position, an image of the source shall be formed 6. 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. Never place standards face down on a surface that may be dirty or abrasive.
Since specular reection is, in general, spectrally nonselective, spectral corrections need to be applied only to highly chromatic, low-gloss specimens upon agreement of users of this test method.
The axis of the incident beam and the axis d52-389 the receptor shall be within 0. NOTE 1—The parallel-beam glossmeters possess the better uniformity of principle-ray angle of reection, but the converging-beam glossmeters possess the better uniformity in axtm of angular divergence accepted for measurement. The following are technically similar to ISO We have no amendments or corrections for this standard.
ASTM D() – Standard Test Method for Specular Gloss
However, in many applications the gloss scales of this test method have provided discriminations between coated specimens that have agreed well with visual discriminations of gloss Opacity and Shade Meter. Your Alert Profile lists the documents that will be monitored. Clean the standards in warm water and a mild detergent solution brushing gently with a soft nylon brush. The axis of zstm receptor shall be at the mirror reection of the axis of the incident beam.
Gloss Meter Introduction | Industry Standards ASTM
Therefore, as many as six different photometric sstm may be required to handle all gloss measurement problems. Bureau Standards, Vol 18, No. You may delete a document from your Alert Profile at any time. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Similar to ISO Squares with sides equal to the shorter sides of the rectangles are also recommended.
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. A study of the effect of geometric conditions on results of gloss tests with special attention to high-gloss panels.
A study of the history of gloss methods in ASTM and other societies, describing the background in the choice of geometry of these methods. In obtaining the visual gloss ratings, however, it is customary to compare the specular reectances of two specimens having similar surface refractive indices.
As the voice of the U. The geometry of angles and apertures is chosen so that these procedures may be used as follows: