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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Feedback Privacy Policy Feedback. A specimen measuring 6. Results obtained by the use of this test method are greatly influenced by the design parameters of the instruments; for example, the resolution is largely determined by the angular width of the receptor aperture. Subscription pricing is determined by: Stress optical sensitivity is define as the ability of some materials to exhibit double refraction of light when placed under stress.

ASTM D – Standard Test Method for Transparency of Plastic Sheeting

The values given in parentheses are for information only. To make this website work, we log user data and share it with processors. The L, a, b values are correlated with L, a, b Chart. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. 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.

About project SlidePlayer Terms of Service. This standard is also available to be qstm in Standards Subscriptions. Your Alert Profile lists the documents that will be monitored. Proper intensity of light must be present.

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If the document is revised or amended, you will be notified by email. There are following terminology to understand the colour theory. When a photo elastic material is strained and viewed under polarized light. Adtm specimen is placed in the specimen holder.

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Proceed to Checkout Continue Shopping. The specimen surface must be free from surface warpage, waviness, or curvature.

If you wish to download it, please recommend it to your friends in any social system. 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.

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 sstm low regular transmittance.

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.

Surface test areas shall be free from abrasion and warpage. Please first verify your email before subscribing to alerts.

If a calibrated standard is to be used, it is inserted in the specimen holder, and the instrument brought to balance upon the value assigned to the standard. Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Another D146 plate, the analyzer, follows, being rotated with respect to the polarizer.

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Subscription pricing is determined by: We think you have liked this presentation. A light source is illuminated.

Plastic Optical Testing

The gloss value is directly read on the r1746. Already Subscribed to this document. The values given in parentheses are for information only. Share buttons are a little bit lower. A polished black glass with qstm assign specular gloss value is Add to Alert PDF.

Standards Subsctiption may be the perfect solution. You may delete a document from your Alert Profile at any time. Scattered — light photoelasticity: From the orientation of the molecules further conclusions regarding the material properties can be derived. This correlation is poor for highly diffusing materials because of interference of scattered light in the visual test.

The control knob is adjusted so that the meter indicates the value assigned to the primary standard.

OPTICAL PROPERTIES.

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A relatively flat, colored specimen is placed in a specimen holder. Registration Forgot your password? Please first verify your email before subscribing to alerts. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. The object is viewed from the opposite side of the light source The polarized light indicates the number of fringes or rings, which is related to the amount of stress, if light is used.