ASTM D4459 PDF

This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D20 on. It is the responsibilty of the Lab Manager to verify this setup is acceptable for the particular application or test method. ***. Test Method: ASTM D Buy ASTM D PRACTICE FOR XENON-ARC EXPOSURE OF PLASTICS INTENDED FOR INDOOR APPLICATIONS from SAI.

Author: Nazilkree Mikinos
Country: Madagascar
Language: English (Spanish)
Genre: Love
Published (Last): 24 May 2004
Pages: 309
PDF File Size: 10.40 Mb
ePub File Size: 8.81 Mb
ISBN: 549-3-20390-342-2
Downloads: 56010
Price: Free* [*Free Regsitration Required]
Uploader: JoJokazahn

Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.

Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Validating the specifications, value and safety of your raw d445, products and assets.

Formally confirming that your products and services meet all trusted external and internal standards. Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Inspection Validating the specifications, value and safety of your raw materials, d4549 and assets.

Certification Formally confirming that your products and services meet all trusted external and internal standards. Auditing Consulting Sourcing Training.

  LEY DE CONTRATO DE TRABAJO 20744 PDF

Assurance Testing Inspection Certification. 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. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. Whether your business is local or global, we can ensure your products meet quality, health, qstm, safety, and social accountability standards for virtually any market around the world.

Xenon-Arc Accelerated Exposure

Accelerated weathering simulates the damaging effects of long term outdoor exposure of materials and coatings by exposing test samples to varying conditions of the most aggressive components of weathering – light, moisture, and heat. A Weather-Ometer uses a xenon satm light source to provide a radiation spectrum that simulates natural sunlight. Glass filters around the xenon arc modify the light spectrum to asmt the appropriate end use conditions.

Moisture is provided by a humidifier and direct spray, and temperature is controlled by heaters.

Microprocessors monitor and precisely control the radiation applied to the test samples. No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration.

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. Up to 60 test samples are mounted in the Xenon Arc and subjected to a cycle of exposure to specified combinations of light, humidity, temperature and water spray.

  LIVRO A META DE ELIYAHU M.GOLDRATT PDF

Various cycles are defined by the appropriate specifications depending upon the intended end use application. Polystyrene Lightfastness Standards are included among the test samples to monitor and verify the performance of the equipment. 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. Standard awtm are 69mm x mm.

Smaller sizes, or slightly larger sizes, can be accommodated, but this equipment does not readily accept actual parts.

Xenon-Arc Accelerated Exposure

Accelerated weathering provides exposed samples for comparison to unexposed control samples. Often several exposure times such as, and hours also will be compared to each other. Standards can be obtained from appropriate standard authorities.

Send us a request Need help or have a question? Need help or have a question? Send us a request Wilton UK: