ASTM G151-09
(Practice)Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
SIGNIFICANCE AND USE
Significance:
When conducting exposures in devices that use laboratory light sources, it is important to consider how well the accelerated test conditions will reproduce property changes and failure modes associated with end-use environments for the materials being tested. In addition, it is essential to consider the effects of variability in both the accelerated test and outdoor exposures when setting up exposure experiments and when interpreting the results from accelerated exposure tests.
No laboratory exposure test can be specified as a total simulation of actual use conditions in outdoor environments. Results obtained from these laboratory accelerated exposures can be considered as representative of actual use exposures only when the degree of rank correlation has been established for the specific materials being tested and when the type of degradation is the same. The relative durability of materials in actual use conditions can be very different in different locations because of differences in UV radiation, time of wetness, relative humidity, temperature, pollutants, and other factors. 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.
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. These acceleration factors are not valid for several reasons.
Acceleration factors are material dependent and can be significantly different for each material and for different formulations of the same material.
Variability in the rate of degradation in both actual use and laboratory accelerated exposure test can ha...
SCOPE
1.1 This practice provides general procedures to be used when exposing nonmetallic materials in accelerated test devices that use laboratory light sources. Detailed information regarding procedures to be used for specific devices are found in standards describing the particular device being used. 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 G 152, G 153, and G 154, and G 155 respectively.
Note 1—Carbon-arc, xenon arc, and fluorescent UV exposures were also described in Practices 23, G 26, and G 53 which referred to very specific equipment designs. Practices G 152, G 153, and G 154, and G 155 are performance based standards that replace Practices G 23, G 26, and G 53.
1.2 This practice also describes general performance requirements for devices used for exposing nonmetallic materials to laboratory light sources. This information is intended primarily for producers of laboratory accelerated exposure devices.
1.3 This practice provides information on the use and interpretation of data from accelerated exposure tests. 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. Information regarding the reporting of results from exposure testing of plastic materials is described in Practice D 5870.
Note 2—Guide G 141 provides information for addressing variability in exposure testing of nonmetallic materials. Guide G 169 provides information for application of statistics to exposure test results
Note 3—This standard is technically equivalent to ISO 4892, Part 1.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate sa...
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Designation:G151–09
Standard Practice for
Exposing Nonmetallic Materials in Accelerated Test Devices
1
that Use Laboratory Light Sources
This standard is issued under the fixed designation G151; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This practice provides general procedures to be used
when exposing nonmetallic materials in accelerated test de-
2. Referenced Documents
vices that use laboratory light sources. Detailed information
2
2.1 ASTM Standards:
regarding procedures to be used for specific devices are found
D618 Practice for Conditioning Plastics for Testing
in standards describing the particular device being used. For
D3924 Specification for Environment for Conditioning and
example, detailed information covering exposures in devices
Testing Paint, Varnish, Lacquer, and Related Materials
that use open flame carbon arc, enclosed carbon arc, xenon arc
D5870 Practice for Calculating Property Retention Index of
and fluorescent UV light source are found in Practices G152,
Plastics
G153,G154, and G155 respectively.
E41 Terminology Relating To Conditioning
NOTE 1—Carbon-arc, xenon arc, and fluorescent UV exposures were
E171 Specification for Atmospheres for Conditioning and
also described in Practices G23, G26, and G53 which referred to very
Testing Flexible Barrier Materials
specific equipment designs. Practices G152, G153, and G154, and G155
E644 Test Methods for Testing Industrial Resistance Ther-
are performance based standards that replace Practices G23, G26, and
mometers
G53.
E691 Practice for Conducting an Interlaboratory Study to
1.2 This practice also describes general performance re-
Determine the Precision of a Test Method
quirementsfordevicesusedforexposingnonmetallicmaterials
E772 Terminology Relating to Solar Energy Conversion
to laboratory light sources. This information is intended
E839 Test Methods for Sheathed Thermocouples and
primarily for producers of laboratory accelerated exposure
3
Sheathed Thermocouple Material
devices.
G23 Practice for Operating Light-Exposure Apparatus
1.3 This practice provides information on the use and
(Carbon-Arc Type) With and Without Water for Exposure
interpretation of data from accelerated exposure tests. Specific
33
of Nonmetallic Materials (Discontinued 2001)
information about methods for determining the property of a
G26 Practice for Operating Light-Exposure Apparatus
nonmetallic material before and after exposure are found in
(Xenon-Arc Type) With and Without Water for Exposure
standards describing the method used to measure each prop-
33
of Nonmetallic Materials (Discontinued 2001)
erty. Information regarding the reporting of results from
G53 Practice for Operating Light-and Water-Exposure Ap-
exposure testing of plastic materials is described in Practice
paratus(FluorescentUV-CondensationType)forExposure
D5870.
3
of Nonmetallic Materials (Discontinued 2001)
NOTE 2—Guide G141 provides information for addressing variability G113 TerminologyRelatingtoNaturalandArtificialWeath-
in exposure testing of nonmetallic materials. Guide G169 provides
ering Tests of Nonmetallic Materials
information for application of statistics to exposure test results
G130 Test Method for Calibration of Narrow- and Broad-
NOTE 3—This standard is technically equivalent to ISO 4892, Part 1.
Band Ultraviolet Radiometers Using a Spectroradiometer
1.4 This standard does not purport to address all of the
G141 Guide forAddressing Variability in Exposure Testing
safety concerns, if any, associated with its use. It is the
of Nonmetallic Materials
responsibility of the user of this standard to establish appro-
1 2
This practice is under the jurisdiction ofASTM Committee G03 onWeathering For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and Durability and is the direct responsibility of Subcommittee G03.03 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Simulated and Controlled Exposure Tests. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved July 1, 2009. Published August 2009. Originally the ASTM website.
3
approved in 1997. Last previous edition approved in 2006 as G151 – 06. DOI: “Withdrawn. The last approved version of this historical standard is referenced
10.1520/G0151-09. on www.astm.org.”
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:G151–06 Designation:G151–09
Standard Practice for
Exposing Nonmetallic Materials in Accelerated Test Devices
1
that Use Laboratory Light Sources
This standard is issued under the fixed designation G 151; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice provides general procedures to be used when exposing nonmetallic materials in accelerated test devices that
use laboratory light sources. Detailed information regarding procedures to be used for specific devices are found in standards
describing the particular device being used. 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 G 152, G 153, and G 154, and
G 155 respectively.
NOTE 1—Carbon-arc, xenon arc, and fluorescent UV exposures were also described in Practices 23, G 26, and G 53 which referred to very specific
equipment designs. Practices G 152, G 153, and G 154, and G 155 are performance based standards that replace Practices G 23, G 26, and G 53.
1.2 This practice also describes general performance requirements for devices used for exposing nonmetallic materials to
laboratory light sources. This information is intended primarily for producers of laboratory accelerated exposure devices.
1.3 This practice provides information on the use and interpretation of data from accelerated exposure tests. 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. Information regarding the reporting of results from exposure testing of
plastic materials is described in Practice D 5870.
NOTE 2—Guide G 141 provides information for addressing variability in exposure testing of nonmetallic materials. Guide G 169 provides information
for application of statistics to exposure test results
NOTE 3—This standard is technically equivalent to ISO 4892, Part 1.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D 618 Practice for Conditioning Plastics for Testing
D 3924 Specification for Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
D 5870 Practice for Calculating Property Retention Index of Plastics
E41 Terminology Relating To Conditioning
E 171 Specification for Atmospheres for Conditioning and Testing Flexible Barrier Materials
E 644 Test Methods for Testing Industrial Resistance Thermometers
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E 772 Terminology Relating to Solar Energy Conversion
E 839 Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Material
G23 Practice for Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of
3
Nonmetallic Materials
G26 PracticeforOperatingLight-ExposureApparatus(Xenon-ArcType)WithandWithoutWaterforExposureofNonmetallic
0
Materials
1
This practice is under the jurisdiction of ASTM Committee G03 on Weathering and Durability and is the direct responsibility of Subcommittee G03.03 on Simulated
and Controlled Exposure Tests.
Current edition approved Nov. 15, 2006. Published April 2007. Originally approved in 1997. Last previous edition approved in 2000 as G151–00.
Current edition approved July 1, 2009. Published August 2009. Originally approved in 1997. Last previous edition approved in 2006 as G 151 – 06.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
3
“Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.”
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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G151–09
G53 Practice for O
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