ASTM G151 PDF

ASTM G – 00 Standard Practice for Exposing Nonmetallic. Materials in Accelerated Test Devices that Use Laboratory. Light Sources. View on Information. ASTM G UV EXPOSURE (GENERAL). This practice provides general procedures to be used when exposing nonmetallic materials in accelerated test. 21 Jun ASTM G – Designation: G – 09 Standard Practice for Exposing Nonmetallic Materials in Ac.

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This information is intended primarily for producers of laboratory accelerated exposure devices.

Link to Active This link will always route to the current Active version of the standard. Standards monitoring is a atm service designed for you who wish to be alerted of changes to or new editions of the standards required in your work.

Work Item s – proposed revisions of this standard.

ASTM G151:10

More specific information on how each factor may alter stability ranking of materials is given in Appendix X1. NOK 1 ,00 excl. Specific information about methods for determining the property of a nonmetallic material before and after exposure are found in standards describing the method used to measure each property.

Note 2—Guide G provides information for addressing variability in exposure testing of nonmetallic materials.

Work Item s – proposed revisions of this standard. Subscription – always available and updated A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.

Hemispherical on 37 Tilted Surface.

The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, you will be alerted by email. Guide G provides information for application of statistics to exposure test results.

ASTM G – UV EXPOSURE (GENERAL)

Test conditions where specimens are exposed continuously to light when actual use conditions provide alternate periods of light and dark. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Therefore, even if results from a specific exposure test conducted according to this practice are found to be useful for comparing the relative durability of materials exposed in a particular exterior environment, it cannot be assumed that they will be useful for determining relative durability of the same materials for a different environment.

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Information regarding the reporting of results from exposure testing of plastic materials is described in Practice D Start Webshop Product catalog Product presentation. The benefits of a subscription: Note 4—If use of an acceleration factor is desired in spite of the warnings given in this practice, such acceleration factors for a astn material are only valid if they are based on data from a sufficient number of separate exterior and laboratory accelerated exposures so that results used to relate times to failure in each exposure can be analyzed using statistical methods.

Detailed information regarding procedures to be used for specific devices are found in standards describing the particular device being used. In some cases, a reference material is exposed at the same time as a test material and the exposure is conducted until astk is a defined change in property of the reference material.

For example, detailed information covering exposures in devices that use carbon-arc, xenon-arc, f151 fluorescent UV light sources are found in Practices G, G, and G, and G respectively. Exposure conditions that do not have any temperature cycling or that produce temperature cycling, or thermal shock, or both, that is not representative of use conditions.

Hemispherical on 37 Tilted Surface. Webprint Printed and bound. Specific information about methods for determining the property of g1151 nonmetallic material before and after exposure are found in standards describing the method used to measure each property.

Even though it is very tempting, calculation of an acceleration factor relating x h or megajoules of radiant exposure in a laboratory accelerated test to y months or years of exterior exposure is not recommended.

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In some cases, the results for the test material are compared to those for the reference material. Active view current version of standard. Information regarding the reporting of results from exposure testing of plastic materials is described astmm Practice D Guide G provides information for application of statistics to exposure test results Note 3—This standard is technically equivalent to ISOPart 1.

ASTM G | Rycobel

Note 6—Practice G describes procedures for selecting and characterizing weathering reference materials used astj establish consistency of operating conditions in a laboratory accelerated test. If you need to be able to add standards to the monitoring service, you must register as a user with your own username and password.

Acceleration factors are material dependent and can be significantly different for each material and for different formulations of the same g1151.

The test material then is evaluated. These are inappropriate uses of reference materials when they are not sensitive to exposure stresses that produce failure in the asm material or when the reference material is very sensitive to an exposure stress that has very little effect on the test material. For example, detailed information covering exposures in devices that use open flame carbon arc, enclosed carbon arc, xenon arc and fluorescent UV light source are found in Practices GGGand G respectively.

Comparisons between materials are best made when they g1151 tested at the same time in the same exposure device. Historical Version s – view previous versions of standard.

Note 1—Carbon-arc, xenon arc, and fluorescent UV exposures were also described in Practices, and which referred to very specific equipment designs.