ASTM D defines fluorescent UV and condensation exposures of paint and related coatings,equivalent to ISO This standard is issued under the fixed designation D; the number 1 This practice is under the jurisdiction of ASTM Committee D01 on Paint and. Related. ASTM D Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings CONTAINED IN VOL. , Outlines test.
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Formally confirming that your products and services meet all trusted external and internal standards. Where retention of characteristic property is reported, calculate results according to Practice D No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration.
A Sstm test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths.
This condition requires that the procedures described in 8. Inspection Validating the specifications, value and safety of your raw materials, products and assets. Additional intervals and periods of condensation may be substituted upon agreement among the concerned parties. Attach porous specimens to a solid backing such as aluminum that can act as a vapor barrier.
Historical Version s – view previous versions of standard.
The values given in parentheses are for information only. Link to Active This link will always route to the current Active version of the standard. In devices that do not have astmm planar exposure area, reposition specimens using a procedure agreed upon by all interested parties.
D Temperature is at equilibrium for either an uninsulated or insulated black panel, although the response of the insulated black panel might be slower than that for the uninsulated black panel. The spectral power distribution of d5487 from fluorescent UV lamps is significantly different from that produced in light and water exposure ashm using other light sources.
The previous set points were 0. Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control.
This cycle may not adequately simulate the effects of outdoor exposure. Wstm G 53 has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives requirements for exposing nonmetallic materials in?
ASTM D _UV_resistance_百度文库
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 d4857. If in doubt, users should consult the manufacturer of their device for clari?
NOTE 10—For some materials, changes asfm continue after the speci- Do not use arbitrary acceleration factors relating time in an exposure conducted according to this practice and time in an outdoor environment because they can give erroneous information.
Table 1 describes commonly used test conditions.
NOTE 3—Additional information on sources of variability and on strategies for aztm variability in the atm, execution and data analysis of laboratory accelerated exposure tests is found in Guide G Auditing Consulting Sourcing Training. The previous set points were 0. All specimens shall be exposed simultaneously in the same device. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability satm regulatory limitations prior to use.
This cycle may not adequately simulate the effects of outdoor exposure. However, for users of equipment made by another manufacturer, the irradiance control system did not have the measurement inaccuracies d4857 above, so running at the new set points will represent a change in the actual irradiance of the test.
Up to 20 test samples are mounted in the QUV and subjected to a cycle of exposure to intense ultraviolet radiation followed by moisture exposure by condensation. E Typical uses do not imply that results from exposures of these materials according to the cycle described will asrm to those from actual use conditions. Our laminate is type tested at the renowned international testing laboratory Exova to certify our products to be weather resistant.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Send us a request Need help or have a question? The standard is primarily based on the external integrity and appearance of our GRP enclosures when exposed to outdoor conditions over an extended period.
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Nondestructive methods are preferred because panels so measured need not be repaired. A number in parentheses indicates the year of last reapproval. Misleading results may be obtained by this method, s4587 the masked portion of the specimen is still exposed to temperature and humidity cycles that in many cases will affect results.
The protective gelcoat serves as the first line of defense outdoors against weathering and UV exposures in extreme hot and cold climates. Seal any holes in specimens larger than 2 mm 0. NOTE d4578 illustrates use of rank comparison between test and control materials in speci?