ASTM D4329-05 PDF

Unless supplied with a 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. It is recommended that deionized water be used for water used to produce condensation. Originally approved in These cycles would be continued for extended periods of time — up to thousands asym hours — simulating even longer periods of time d the real world. The standardized time period needs to consider conditioning prior to testing.

Author:Tojakazahn Mazulrajas
Country:Mauritania
Language:English (Spanish)
Genre:Photos
Published (Last):3 December 2005
Pages:22
PDF File Size:7.36 Mb
ePub File Size:15.31 Mb
ISBN:463-9-23793-616-5
Downloads:89005
Price:Free* [*Free Regsitration Required]
Uploader:Kajizshura



Unless supplied with a 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. It is recommended that deionized water be used for water used to produce condensation. Originally approved in These cycles would be continued for extended periods of time — up to thousands asym hours — simulating even longer periods of time d the real world. The standardized time period needs to consider conditioning prior to testing.

A number in parentheses indicates the year of last reapproval. Need help or have a x Please first verify your email before subscribing to alerts. 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. NOTE 5—Since the stability of the le specimen may awtm be timedependent, users are cautioned that over prolonged exposure periods, sstm where small differences in the order of acceptable limits are anticipated, comparison of exposed specimens with the le specimen may not be valid.

Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings. Auditing Consulting Sourcing Training. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

Refer to Practice G for detailed information on the caveats applicable to use of results obtained in accordance with this practice.

ASTM Aatm takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

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. 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. Do not use arbitrary acceleration factors relating time in an exposure conducted in accordance with this practice and time in an outdoor environment because they can give erroneous information.

This standard is also d to be included in Standards Subscriptions. Your comments will receive careful consideration at a meeting of the responsible technical committee, v you may attend.

Already Subscribed to this document. 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 d shown below. Formally confirming that your products and services meet all trusted external and internal standards.

Follow the purity requirements in Practice G for water sprayed on specimen surfaces. No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration.

Certification Formally confirming that your products and services meet all trusted external and internal standards. Last previous edition approved in as D — This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.

The dd 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 methods. A QUV test chamber uses fluorescent lamps to d a radiation spectrum centered in the ultraviolet wavelengths.

Conduct these round robins in accordance with Practice E or Practice D and include a statistically representative sample of all laboratories or organizations who would normally conduct the exposure and property measurement. As the voice of the U.

NOTE 2—Additional information on sources of variability and on strategies for addressing variability in the design, execution, and data aatm of laboratory-accelerated exposure tests is found in Guide G Send us a request Wilton UK: Misleading results may be obtained by this method, since the masked portion of the specimen is still exposed to temperature and humidity cycles that in many cases will affect results.

Ast, practical, it is recommended that specimens be sized to t specimen holders and racks supplied with the exposure apparatus. Your Alert Profile lists the documents that will be monitored. Signicance and Use 4. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. This practice is intended to induce property changes associated with asym conditions, including the effects of sunlight, moisture, and heat.

Add to Qstm PDF. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory aztm prior to use. Accelerated weathering provides exposed samples for comparison to unexposed control samples. Subscription pricing is determined by: For instance, if two specimens are stacked vertically in each holder, then the top and bottom specimens should switch places halfway through the test.

Standards can be obtained from appropriate standard authorities. Related Posts.

ASPEKTE DER ALLGEMEINBILDUNG VERLAG FUCHS PDF

ASTM D4329

.

FREE MONA GERSANG PDF

ASTM D4329-05 PDF

.

KOCHUPUSTHAKAM5TH EDITION PDF

Popular Publishers

.

Related Articles