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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ASTM D – 15 – Standard Test Method for Transparency of Plastic Sheeting
The size of specimen is approximately 50mm in diameter. The variables of appearance include glossiness or matness, opacity or transparency, smoothness or roughness, and metallic reflection or diffusion surfaces of parts of its rays. 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.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Specimen must be free from dust and dirt.
The total transmittance light is consists of d11746 direct transmitted and diffused components which are depending on the angular distribution of light. The light is travelling in the direction perpendicular to the plane of the paper. 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.
Standard Test Method for Transparency of Plastic Sheeting
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. It is a fundamental property used for control the purity of the product and for optical parts design. Please first verify your email before subscribing to alerts. Need more than one copy?
ASTM D – 09 Standard Test Method for Transparency of Plastic Sheeting
Colour is measured by a particular wavelength of light reflect and producing sensation in the observer eye.
Its measured by quantity of light deviates by more than 2. The values given in parentheses are for information only. The gloss value is directly read on the instrument.
Standards Subsctiption may be the perfect solution. Subscription pricing is determined by: Another Polaroid plate, the analyzer, follows, being rotated with respect to the polarizer. This standard is not included in any packages. Surface test areas shall be free from abrasion and warpage.
Scattered — light photoelasticity: If the document is revised or amended, you will be notified by email. As the voice of the U.
Proceed to Checkout Continue Shopping. Standards Subsctiption may be the perfect solution. Asm additional techniques are used in conjunction with the basic photoelastic concept, which make it possible to analyze complex or unusual problems.
There are following terminology to understand the colour theory. 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. To make this website work, we log user data and share it with processors.
Knowledge of these optical properties is needed for several reasons: 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. All specular gloss values are based on a primary reference standard. The two essential elements of visual colour evaluation are: This correlation is poor for highly diffusing materials because of interference of scattered light in the visual test.
Orientation of the crystallites and the form birefringence arising from the interfaces between crystalline and amorphous regions. The specimen surface must be free from surface warpage, waviness, or curvature.
My presentations Profile Feedback Log out. Need more than one copy? Photoelasticity Photo-elasticity is a visual technique for measuring stresses. The values given in parentheses are for information only. 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 standard is not included in any packages. A light source is illuminated. 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.