ASTM D1746 PDF

ASTM D Standard Test Method for Transparency of Plastic Sheeting. Clarity – ASTM D This test method covers the measurement of the transparency of plastic sheeting. While this test may be used for any transparent material. Find the most up-to-date version of ASTM D at Engineering

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Next, the sensor is placed on the specimen surface and the gloss value is read directly from the analog or digital display. The gloss value is directly read on the instrument.

ASTM D – 15 Standard Test Method for Transparency of Plastic Sheeting

Caution should therefore be exercised in comparing results obtained from different instruments, especially for samples with low regular transmittance. Sensitivity to differences improves with decreasing incident beam- and receptor-angle. You may delete a document from your Alert Profile at any time.

Proper intensity of light must be present.

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As the voice of the U.

The values given in parentheses are for information only. Orientation of the crystallites and the aetm birefringence arising from the interfaces between crystalline and amorphous regions.

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We have no amendments or corrections for this standard. Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting. As the voice of the U.

OPTICAL PROPERTIES. – ppt video online download

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine asrm applicability of regulatory limitations prior to use. The specimen surface must be free from surface warpage, waviness, or curvature. Birefringence is referred to as stress birefringence and its contributions are: All specular gloss values are based on a primary reference standard.

There is no known ISO equivalent to this standard. Proceed to Checkout Continue Shopping. Although generally applicable to any translucent or transparent material, it is principally intended for use astmm nominally clear and colorless thin sheeting. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. It is the responsibility of the user of this standard to establish appropriate safety and health practices and f1746 the applicability of regulatory limitations prior to use.

The light is travelling in the direction perpendicular to the plane of the paper.

OPTICAL PROPERTIES.

Your Alert Profile lists the documents that will be monitored. The L, a, b values are noted down.

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The reading is recorded as percentage clarity directly from the measurement unit.

Feedback Privacy Policy Feedback. Specimen must be free from dust and dirt. Please first verify your email before subscribing to alerts. 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.

Add to Alert PDF. This technique is most often used on photoelastic coatings. With no sample in position the unit is standardized until a reading of relative to air is obtained. Photoelasticity Photo-elasticity is a visual technique for measuring stresses.

Standard Test Method for Transparency of Plastic Sheeting

aztm There are following terminology to understand the colour theory. Please first verify your email before subscribing to alerts. Subscription pricing is determined by: Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

Wide angle scattering Haze Narrow angle scattering Clarity or Transparency Haze is defined as the cloudy appearance on the surface of specimen.

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