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
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. To increase the asstm of the travel measurement, this standard specifies the correction for machine deformation.
In this scenario, the deformation behavior of the specimen s3574 relatively complex. 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.
Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams.
Our test machines do that for satm. This software is a perfect supporter for this standard and supplied graphs for load vs displacement and displacement vs time. Variations of this method are described in the various factory regulations.
This tensile test determines the effects of a tensile force applied to foam. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications.
Aetm tests measure the difference in area under the curves during loading and unloading, representing energy loss.
AllroundLine for individual testing requirements and all applications The optimum solution for demanding testing applications, whether in quality control or for research projects.
Forces up to 10 kN 2, lbf Low force tabletop systems Modular series of five frame options with adjustable f3574 space Affordable testing option for tension, compression, bend, peel and much more. You are seeking to quantify the firmness of your foam. Recovery time tests determine the recovery time of slow recovery memory foams. One specimen should be tested. GK mechanical vice grips can also be used.
The density measurement process can be integrated in the test sequence.
ASTM D Testing Equipment for Flexible Cellular Urethane Foams
You will want to record tensile stress, tensile strength, and ultimate elongation for Test E. Generally 3d574 test consists of three preload cycles, followed by a measuring cycle in which the characteristic values are determined. The compression stress value is the pressure resistance that a defined specimen under specified environmental conditions applies to a defined whole-surface compression. GKP pneumatic vice grips can be used for high volume aatm or for very accurate and consistent clamping force.
For this reason it is not possible to effectively compare measured values that are determined from specimens of various dimensions using this test method.
This test is similar to ISO The methods used by Renault and PSA are exceptions. These versatile test machines can be configured to test in both tensile and compression. For Test F, specimens are generally about mm long blocks with the width and depth the same as the material pad thickness. These correction options are available with all ZwickRoell testing machines as a standard function. Density is measured using a scale that is connected to the PC.
Method I3 is similar to ISO 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. 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 initial height of the specimen is determined directly by the testing machine at the beginning of the first preload cycle.
The and are lower force options best for foam testing, the having more ashm space for larger specimens.
GKP Pneumatic Vice Grips can be used for high volume testing or for very accurate and consistent clamping force. The standard specimen for this test is 50mm X 50mm X 25 mm thick or larger.
One sample is required. This testing machine is equally ideal for research and development and for routine quality assurance testing. A 40 mm cut is placed down the middle of one end and 3 samples are required. If possible a completed manufactured product should be used as your testing specimen. ASTM D specifies an additional specimen with a round cross-section and a diameter of 57 mm.
Compression hardness ISO , ASTM D
Have d374 question about conducting the test for this standard? These specialized base plates allow air to escape from the foam during compression. The specimen should be mm X mm X 50mm.
According to ASTM Dthe height and travel-zero point is redetermined before the measuring cycle. For tests I3 and M, our engineers recommend the Series Fatigue Test Machine in order to complete the fatigue tests.
For Test M recovery time is measured in seconds.