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.
|Published (Last):||5 January 2014|
|PDF File Size:||11.17 Mb|
|ePub File Size:||8.15 Mb|
|Price:||Free* [*Free Regsitration Required]|
IFD Indentation force deflection and ILD indentation load deflection are two of the more common compression tests in this standard.
The standard specimen for this test is 50mm X 50mm X 25 mm thick or larger. In this scenario, the deformation behavior of the specimen is relatively complex.
Compressive Properties/Compression Stress Value/Compression Stress-Strain Characteristics
To increase the accuracy of the travel measurement, this standard specifies the correction for machine deformation. This test is similar to ISO Measurements are made for tensile stress, tensile strength, and ultimate elongation. The Universal Test Machine would be used for higher forces or very large specimens.
These specialized base plates allow air to escape from the foam during compression. Density is measured using a scale that is connected to the PC.
Call one of our engineers to learn more about which package is best for you. The and are lower force options best for foam testing, the having more test space for larger specimens. Our test engineers would recommend the or Universal Test Machines for forces up to lbs. GK mechanical vice grips can also be used. The specimen should be mm X mm X 50mm.
GKP Pneumatic Vice Grips can be used for high volume testing or for very accurate and consistent clamping force. Our engineers are very familiar with foam testing to ASTM D and can help guide aetm through the process with the correct compression test machine. AllroundLine for individual testing requirements and all applications The optimum solution for demanding testing applications, whether in quality control or for research projects.
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.
The methods used by Renault and PSA are exceptions. Satm sample is required. For Test M recovery time is measured in seconds.
ASTM D Testing Equipment for Flexible Cellular Urethane Foams
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. We are confident that we have what you are looking for. Cuts test specimens from stock material Available for a wide variety of ISO and ASTM standards Consistent specimens for consistent results Manufactured with tool steel to resist damage and wear over time. Standards for This Test The standard specimens have a quadratic cross-section with a lateral edge length of 5 or mm.
The density measurement process can be integrated in the test sequence. This tensile test determines the effects of a tensile force applied to foam.
This is a very common situation in the foam industry. Recovery time tests determine the recovery time of slow recovery memory foams. The test consists of a total of five test cycles, of which the first and the last are evaluated. For tests I3 and M, our engineers recommend the Series Fatigue Test Machine in order to complete the fatigue tests. There is a wide range of applications for D including car seats, furniture, mattresses, bedding, pillows, foam products and materials, and bolsters.
Tear test to determine the tear propagation resistance of foam. 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.
According to ASTM Dthe height and travel-zero point is redetermined before the measuring cycle. The initial height of the specimen is determined directly by the testing machine at the beginning of the first preload cycle. Have a question about conducting the test for this standard?
You will want to record tensile stress, tensile strength, and ultimate elongation for Test E. These versatile test machines can be configured to test in both tensile and compression.
You are seeking to quantify the firmness of your foam. These correction options are available with all ZwickRoell testing machines as a standard function. 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.
One specimen should be tested. This testing machine is equally ideal for research and development and for routine quality assurance testing. We recommend you purchase and read the full ASTM standard to achieve the best results. Our test machines do that for you.
The compression stress value is the pressure resistance that a defined specimen under specified environmental conditions applies to a defined whole-surface compression. One specimen is necessary for this test.