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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Our test machines do that for you.
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. Indentation Residual Gauge Length test for urethane foams used to determine how thick satm padding is after being loaded by an average weight person.
ASTM D Testing Equipment for Flexible Cellular Urethane Foams
GK mechanical vice grips can also be used. This test is similar to ISO Our test engineers would recommend the or Universal Test Machines for forces up to d574.
A 40 mm cut is placed down the middle of one end and 3 samples are required. We are confident that we have what you are looking for. Density is measured using a scale that is connected to the PC. The initial height of the specimen is determined directly by the testing machine at the beginning of the first preload cycle. 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. Method I3 is similar to ISO There are several test procedures in this standard to help determine the compression, deflection, tear and tensile characteristics of flexible cellular materials urethane foams and polyurethane foams.
These specialized base plates allow air to escape from the foam during compression. This test will measure the IFD properties of the foam specimen before and after fatigue cycling. To increase the accuracy of the travel measurement, this standard specifies the correction for machine deformation. If possible a completed manufactured product should be used as your testing specimen.
There is a wide range of applications for D including car seats, furniture, mattresses, bedding, pillows, foam products and materials, and bolsters. The standard specimen for this test is 50mm X 50mm X 25 mm thick or larger.
Compressive Properties/Compression Stress Value/Compression Stress-Strain Characteristics
Standards for This Test The standard specimens have a quadratic cross-section with a lateral edge length of 5 or mm. This software is a perfect supporter for this standard and supplied graphs for load vs displacement and displacement vs time.
According to ASTM Dthe height and travel-zero point is redetermined before the asym cycle. The methods used by Renault and PSA are exceptions.
ASTM D3574 Testing Equipment for Flexible Cellular Urethane Foams
Measurements are made for tensile stress, tensile strength, and ultimate elongation. Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams.
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. Recovery time tests determine the recovery time of slow recovery memory foams.
This is a very common situation in the foam industry.
This tensile test determines the effects of a tensile force applied to foam. The test consists of a total of five test cycles, of which the first and the last are evaluated. One specimen is necessary for this test.
For this reason it awtm not possible to effectively compare measured values that are determined from specimens of various dimensions using this test method. For Test M recovery time is measured in seconds.
For tests I3 and M, our engineers recommend the Series Fatigue Test Machine in order to complete the fatigue tests.
The density measurement process can be integrated in the test sequence.