You are seeking to quantify the firmness of your foam. Zstm engineers are very familiar with foam testing to ASTM D and can help guide you through the process with the correct compression test machine. IFD Indentation force deflection and ILD indentation load deflection are two of the more common compression tests in this standard. There are several test procedures atm this standard to help determine the compression, deflection, tear and tensile characteristics of flexible cellular materials urethane foams and polyurethane foams.
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Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams. There is a wide range of applications for D including car seats, furniture, mattresses, bedding, pillows, foam products and materials, and bolsters.
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. 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, software and accessories. We recommend you purchase and read the full ASTM standard to achieve the best results.
Contact us by completing the form to help you select the right machine. Contact us to help you select the right machine. 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. One sample is required. Test Procedure Measure the specimen thickness. Place the specimen on the lower compression platen of your compression tester.
Allow the specimen to rest for 6 minutes with the platen not contacting the specimen. Bring the platen down into contact with the specimen at 50 mm per minute and determine the thickness at a force of 4. Determine the force after 60 seconds. If possible a completed manufactured product should be used as your testing specimen. Test Procedure First, measure the specimen thickness. Place the specimen on the lower platen in the compression tester.
Preflex the specimen by twice lowering and raising the upper platen to N at a rate of mm per minute. Bring the platen down into contact with the specimen at 50 mm per minute to a force of 4. Indent the specimen at 50 mm per minute with N. Determine the thickness after 60 seconds. Increase the force to N at 50 mm per minute. The standard specimen for this test is 50mm X 50mm X 25 mm thick or larger. Place the specimen on the lower support platen in the compression tester.
Bring the upper compression platen down into contact with the specimen to a load of Pa. Determine the final force and displacement after 60 seconds. Measurements are made for tensile stress, tensile strength, and ultimate elongation. Dog bone specimens are cut from a You will want to record tensile stress, tensile strength, and ultimate elongation for Test E. Test Procedure First symmetrically place the dog bone tabs of the specimen into the top and bottom vice grips of your tensile test machine.
Run tensile test machine at mm per minute. Record continuously the force and displacement during the test until rupture. This test is similar to ISO For Test F, specimens are generally about mm long blocks with the width and depth the same as the material pad thickness.
A 40 mm cut is placed down the middle of one end and 3 samples are required. Test Procedure First clamp the specimen in the jaws of the grips symmetrically so that each tab is held in one jaw. Record the maximum force and cross sectional dimensions of the specimen. Method I3 is similar to ISO This test will measure the IFD properties of the foam specimen before and after fatigue cycling.
One specimen is necessary for this test. The specimen should be mm X mm X 50mm. Measure the original thickness with 4. For Test M recovery time is measured in seconds. One specimen should be tested. Test Procedure Place the specimen on the perforated support platen and bring the indenter foot into contact with the specimen with a 4.
Hold for 60 seconds. Start the stopwatch immediately upon upward movement of the indenter. Record the time in seconds it takes the foam specimen to recover to 4. Appendix X6 - Hysteresis Loss Hysteresis test data Hysteresis tests measure the difference in area under the curves during loading and unloading, representing energy loss.
Advice From Our Engineers You are seeking to quantify the firmness of your foam. This is a very common situation in the foam industry. 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.
Our test machines do that for you. Ideal for component testing and testing flexible foam materials from automotive cushioning materials to pillows and mattresses!
ASTM D3575 Foam Test Methods
ASTM D is the international standard for determining flexural properties of cellular material made from olefin polymers. This test method covers the deflection of the foam specimen under a compressive force and under specified conditions of time and temperature, then noting the effect on the thickness of the specimen after releasing the compressive force. Equipment Required: An apparatus shall be provided having a flat compression foot, larger than the specimen to be tested, connected to a force-measuring device and mounted in a manner such that the product or specimen can be deflected compressed at a speed of 0. The apparatus shall be arranged to support the specimen on a level horizontal plate. Compression Device, consisting of two or more flat plates arranged so the plates are held parallel to each other by bolts or clamps, and the space between the plates is adjustable to the required deflection thickness by means of spacers. Give our test engineers a call today for help configuring the best test machine and accessories according to ASTM D
ASTM D3574 Testing Equipment for Flexible Cellular Urethane Foams