This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D20 on. Plastics. ASTM D test assesses the energy required to crack or break rigid plastics sheeting and profile flat sections employed in building products. Learn more. Purchase your copy of ASTM D – 16 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
|Published (Last):||14 December 2013|
|PDF File Size:||6.63 Mb|
|ePub File Size:||7.91 Mb|
|Price:||Free* [*Free Regsitration Required]|
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 d42226, products and assets. Formally confirming that your products and services meet all trusted external and internal standards.
ASTM D4226 – 16
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, products and assets.
Certification Formally confirming that your products and services meet all trusted external and internal standards. Auditing Consulting Sourcing Training.
Assurance Testing Inspection Certification.
Gardner Impact ASTM D, D
Through our network of over ast, 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, environmental, safety, and social accountability wstm for virtually any market around the world.
Falling dart impact, also known as Gardner impact, is a traditional method for evaluating the impact strength or ast of a plastic material. The test is often used to specify appropriate materials for applications involving impact or to evaluate the effect of secondary finishing operations or other environmental factors on plastic impact r4226. The test sample rests on a base plate over an opening of specified diameter.
An “impactor” sits on top of the test sample with a nose of specified radius in contact with the center of the test sample.
Gardner Impact ASTM D4226, D5420
A weight is raised inside a guide tube to a predetermined height, then released to drop onto the top of the impactor, forcing the nose through the test sample. The most common method to analyze this data is called the “Bruceton Staircase” method.
Then a series of 20 impacts are conducted. If a test sample passes, the drop height qstm increased by one unit. If a test sample fails, the drop height is decreased by one unit.
For optimum results using the staircase method, a minimum of 30 test samples are necessary.
Any flat specimens can be tested – the preferred test sample is a mm 4″ disk or plaque. Standards can be obtained from appropriate standards authorities. Send us a request Need help or have a question? Need help or have a question? Send us a request Wilton UK: