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):||3 July 2010|
|PDF File Size:||19.42 Mb|
|ePub File Size:||19.23 Mb|
|Price:||Free* [*Free Regsitration Required]|
GKP pneumatic d574 grips can be used for high volume testing or for very accurate and consistent clamping force. 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.
Call one of our engineers to learn more about which package is best for you. Hysteresis tests measure the difference in area under the curves during loading and unloading, representing energy loss.
The test consists of a total of five test cycles, of which the first and the last are evaluated. Standards for This Test The standard specimens have a quadratic cross-section with a lateral edge length of 5 or mm.
ASTM D3574 Testing Equipment for Flexible Cellular Urethane Foams
To increase the accuracy of the travel measurement, this standard specifies the correction for machine deformation. There is asm wide range of applications for D including car seats, furniture, mattresses, bedding, pillows, foam products and materials, and bolsters.
You are seeking to quantify the firmness of your foam. The and are lower force options best for foam testing, the having more test space for larger specimens.
Tear test to determine the tear propagation resistance of foam. In this scenario, the deformation behavior of the specimen is relatively complex. IFD Indentation force deflection and ILD indentation load deflection are two of the more common compression tests in this standard. The initial height of the specimen is determined directly by v3574 testing machine at the beginning of the first preload cycle.
Our test machines do that for you. One specimen should be tested. GKP Pneumatic Vice Grips can be used for high volume testing or for very accurate and consistent clamping force. ASTM D specifies an additional specimen with a round cross-section and a diameter of 57 mm.
Compressive Properties/Compression Stress Value/Compression Stress-Strain Characteristics
This test is similar to ISO 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.
Density is measured using a scale that is connected to the PC. The compression stress value is the pressure resistance that a defined specimen under specified environmental conditions applies to a defined whole-surface compression.
Generally the test consists of three preload cycles, followed by a measuring cycle in which the characteristic values are determined.
Variations of this method are described in the various factory regulations. These correction options are available with all ZwickRoell testing machines as a standard function.
AllroundLine for individual testing requirements and all applications The optimum axtm for demanding testing applications, whether in quality control or for research projects. 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.
Compression hardness ISO , ASTM D
One sample is required. If possible a completed manufactured product should be used as your testing specimen. Method I3 d33574 similar to ISO GK mechanical vice grips can also be used.
All of our test machines configured for ASTM D are supplied with perforated base plates for supporting the foam samples. There are several test procedures in this standard to help determine the compression, deflection, tear and tensile characteristics of flexible cellular x3574 urethane foams and polyurethane foams.
Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static d3547 and compression tests These dual column testers are available in both tabletop and floor standing models.
We recommend you purchase and read the full ASTM standard to achieve the best results. You will want to record tensile stress, tensile strength, and ultimate elongation for Test E.
Samples come in a variety of forms including slab, bonded, and molded flexible cellular urethane foams.