ASTM D tests for fluorescent UV exposure of plastics. It covers specific procedures and test conditions based on practices ASTM G and ASTM G This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D on Plastics. ASTM D – Designation: D – 05 Standard Practice for Fluorescent UV Exposure of Pla.
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This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. All concerned parties must agree on the specic control material used. Parts may be accommodated depending on size. Certification Formally confirming that your products and services meet all trusted external and internal standards.
A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. It is recommended that at least three replicates of each material be exposed to allow d43299 statistical evaluation of results.
Historical Version s – view previous versions of standard. Send us a request Wilton UK: Accelerated weathering provides exposed samples for comparison to unexposed control samples. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
NOTE 4—This is especially important when mechanical properties are being investigated. Calculate retention of characteristic property in accordance with Practice D when it is reported. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
The acceleration factor is materialdependent and is only valid if it is based on data from a sufficient number of separate exterior and laboratoryaccelerated exposures so that results used to relate times to failure in each exposure can be analyzed using statistical asym.
Where zstm, it is recommended that specimens be sized to t specimen holders and racks supplied with the exposure apparatus. Auditing Consulting Sourcing Training. Assurance X4329 Inspection Certification.
Expose replicates of the test specimen and the control specimen so that statistically signicant performance differences can be determined NOTE 8—Fischer illustrates use of rank comparison between test and control materials in d4392. Hemispherical on 37 Tilted Surface. NOTE 6—An example of a statistical analysis using multiple-laboratory and exterior exposures to calculate an acceleration factor is described adtm Simms.
Warning— Variation in results aztm be expected when operating conditions are varied within the accepted limits of this practice. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892
These cycles would be continued for extended periods of time – up to thousands of hours – simulating even longer periods of time in the real world. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.
For measurements 8 Fischer, R. However, performance comparisons under the controlled conditions of accelerated weathering can be compared to documented performance of materials and coatings that have experienced extended periods of end use exposure. This practice also v4329 the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.
Instrumental measurements are recommended whenever possible. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and astn evaluation of test results.
ASTM D | Rycobel
The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Validating the specifications, value and safety of your raw materials, products and assets. If four specimens are stacked vertically, then the specimens should be repositioned vertically three times during the aatm. The d44329 given in brackets are for information only. Signicance and Use 4. 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.
Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specic operating conditions used. Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings.
Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Therefore, no reference to asm use of this practice should be made x4329 accompanied by a report prepared in accordance with Section 8 that describes the specific operating conditions used.
Standards can be obtained from appropriate standard authorities. Do not place the apparatus near a heat source such as an oven. Control of ambient temperature is particularly critical when one apparatus is stacked above another, asrm the heat generated from the lower unit can interfere with the operation of the units above.
Significant factors include regulation of line voltage, temperature of the room in which the device operates, asstm control, and condition and age of the lamp. Periods of Exposure and Evaluation of Test Results 8.
The values given in parentheses are for information only. The standardized time period needs to consider conditioning prior to testing. Unless supplied with astmm specic backing as an integral part of the test, specimens shall be mounted so that only the minimum specimen area required for support by the holder shall be covered. Attach porous specimens to a solid backing such as aluminum that can act as a vapor barrier.
This method is preferred over evaluating materials after an arbitrary exposure time or radiant exposure. The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice. Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice.
Current edition approved July 15, Inspection Validating the specifications, value and safety of your raw materials, products s4329 assets.