ASTM D B1 is a testing specification that measures the indentation force deflection of urethane foam and foam-like substances. ASTM D C specifies a method for measuring the compression force necessary to produce a 50% deflection over the entire top surface of the foam test . ASTM D Standard Test Methods for Flexible Cellular Materials-Slab, Bonded, and Molded Urethane Foams.
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Compressive Properties/Compression Stress Value/Compression Stress-Strain Characteristics
Our engineers are very familiar with foam testing to ASTM D and can help guide you through the process with the correct compression test machine. All of our test machines configured for ASTM D are supplied with perforated base plates for supporting the foam samples. ASTM D is a widely accepted test standard for testing soft polyurethane foam. In order to be able to certify your results you need a test machine that was designed and built to the details of the standard, and you need to run the test exactly as the standard directs.
Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams.
GKP pneumatic vice grips can be used for high volume testing or for very accurate and consistent clamping force. This tensile test determines the effects of a tensile force applied to foam. Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension and compression tests These dual column testers are available in both tabletop and floor standing models.
There are several test procedures in this standard to help determine the compression, deflection, tear and tensile characteristics of flexible cellular materials urethane asgm and polyurethane foams.
We are confident that we have what you are looking for. These specialized base plates allow air to escape from the foam during compression. Recovery time tests determine the recovery time of slow recovery memory foams. We recommend you purchase and read the full ASTM standard xstm achieve the best results.
ASTM D3574 Testing Equipment for Flexible Cellular Urethane Foams
Have a question about conducting the test for this standard? GK mechanical vice grips can also be used.
The specimen should be mm X mm X 50mm. Standards for This Test The standard specimens have a quadratic cross-section with a lateral edge length of 5 or mm. Hysteresis tests measure the difference in area under the curves during loading and unloading, representing energy loss.
Indentation Residual Gauge Length test for urethane foams used to determine how thick the padding is after being loaded by an average weight person. The Universal Test Machine would be used for higher forces or very large specimens. The density measurement process can be integrated in the test sequence. For this reason it is not possible to effectively compare measured values that are determined from specimens of various dimensions using this test method.
The initial height of the specimen is determined directly by the testing machine at the beginning of the first preload cycle. In this scenario, the deformation behavior of the specimen is relatively complex.
The test consists of a total of five test cycles, of which the first and the last are evaluated. This test is similar to ISO The specimen for Test B1 consists of the entire product or a suitable portion of it and should be no less than mm W X mm L X mm thick. This test will measure the IFD properties of the foam specimen before and after fatigue cycling.
ASTM D Testing Equipment for Flexible Cellular Urethane Foams
These correction options are available with all ZwickRoell testing machines as a standard function. AllroundLine for individual testing requirements and all applications The optimum solution for demanding testing applications, whether in quality control or for research projects.
A 40 mm cut is placed down the middle of one end and 3 samples are required. Tear test to determine the tear propagation resistance of foam.
Compression hardness ISO , ASTM D
This testing machine is equally ideal for research and development and for routine quality assurance testing. For tests I3 and M, our engineers recommend the Series Fatigue D35744 Machine in order to complete the fatigue tests.
According to ASTM Dthe height and travel-zero point is redetermined before the measuring cycle.