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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If the document is revised or amended, you will be notified by email. Auth with social network: This technique is most often used on photoelastic coatings.

There is no known ISO equivalent to this standard. From the orientation of the molecules further conclusions regarding the material properties can be derived.

All specular gloss values are based on a primary reference standard. A light source is illuminated. Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting.

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Standard Test Method for Transparency of Plastic Sheeting

Next, the sensor is placed on the specimen surface and the gloss value is read directly from the analog or digital display. The ring sensor mounted at the exit port of the sphere detects narow angle scattered light clarity.

Proper intensity of light must be present.

About asym SlidePlayer Terms of Service. The control knob is adjusted so that the meter indicates the value assigned to the primary standard. When a photo elastic material is strained and viewed under polarized light. It is the responsibility of the user of this standard to establish appropriate safety and asym practices and determine the applicability of regulatory limitations prior to use.


The L, a, b values are noted down. Registration Forgot your password? Scattered — light photoelasticity: Wide angle scattering Haze Narrow angle scattering Clarity or Transparency Haze is defined x1746 the cloudy appearance on the surface of specimen.

There are two types of angle distribution. Knowledge of these optical properties is needed for several reasons: Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

Plastic Optical Testing – ASTM d | Polyhedron Labs

Standards Subsctiption may be the perfect solution. If you wish to download it, please recommend it to your friends in any social system. The L, a, b values are correlated with L, a, b Chart. It is the responsibility of the user of this standard to establish appropriate safety and health c1746 and determine the applicability of regulatory limitations prior to use.