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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Part 28 Testing coated fabrics – determination of specular gloss. Do not use soap solutions to clean standards, because they can leave a lm. Pt 5, Method A Methods of testing plastics – optical and colour properties, weathering – determination of specular gloss. This standard has been approved for use by agencies astmm the Department of Defense. If the instrument reading for the second standard does not agree within one unit of its assigned values, check cleanliness and repeat.
Contains photographs depicting gloss characteristics of a variety of methods. If the reading is not within To calibrate, adjust the instrument to read correctly the gloss of a highly polished standard, properly positioned and oriented, and then read the gloss of a working standard in the mid-gloss range.
ASTM D – 89() Standard Test Method for Specular Gloss
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Bureau Standards, Vol 18, No. What difference in gloss can a human see? Clean the standards in asstm water and a mild detergent solution brushing gently with a soft nylon brush. 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 extent of angular divergence accepted for measurement.
The length of the illuminated area of the specimen shall be not more than one third of the distance from the center of this area to the receptor eld stop. For specimens d253-89 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.
A wedge of high-purity quartz provides a more stable reference standard than glass. Keep them clean and away from any dirt that might scratch or mar their surfaces. We have no amendments or corrections for this standard. The values given in parentheses are for information only. Has unusual converging beam geometry.
แจก ASTM D523-89, Standard Test Method for Specular Gloss.
Last previous edition D — 85e1. Similar to ISO For example, adtm of index 1. The following are technically similar to ISO Opacity and Shade Meter.
Need more than one copy? The dimensions and tolerance of the source and receptor shall be as indicated in Table 1. DIN Germany Reflectometer as a means for assessing the specular gloss of smooth painted and plastic surfaces.
ASTM D Gloss_百度文库
Measurements by this test method correlate with xstm observations of surface shininess made at roughly the corresponding angles. DIN Testing of paper and board; reflectometer as means for gloss Assessment of paper and board. Your Alert Profile lists the documents that will be monitored.
This standard is also available to be included in Standards Subscriptions. The receptor shall be a photosensitive device responding to visible radiation. NOTE 3—Polished black glass has been reported to change in refractive index with time largely due to chemical contamination Test Method D provides an alternative procedure for measuring reection haze.
For means of three determinations. Preparation and Selection of Test Specimens 8.
The geometry of angles and apertures is chosen so that these procedures may be used as follows: The values given in parentheses are for information only.
Squares with sides equal to the shorter sides of the rectangles are also recommended. Such standards should be checked periodically for constancy by comparing with primary standards.
Test Method E includes techniques for the measurement of both distinctness-of-image gloss and reection haze. Standards Subsctiption may be the perfect solution.
Since the instrumental ratings are affected more than the visual ratings by changes in surface refractive index, non-agreement between visual and instrumental gloss ratings can occur when high gloss specimen surfaces differing in refractive index are compared.
Gloss Meter for Curved Surfaces. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Place the rinsed standards in a warm oven to dry. Very similar to ISO The polished black glass high-gloss standard may be dabbed gently with a lint-free paper towel or other lint-free absorbent material. Add to Alert PDF.