Deep C Frame IFD Tester


This is a simple foam Indentation Force Deflection (IFD) tester capable of testing samples up to 80” square and up to 8” thick. It uses a modified 8” stroke variable speed dc drive lead-screw assembly with an adjustable speed range to meet the requirements of ASTM D3574. (That spec allows the test to be done within a range of 0.83 to 3.3 mm/sec). A precision load sensor and digital display provide the IFD load values.  Maximum load capability is 250 lbs. The custom fabricated structure (with the required lower venting grid) is powder coated steel and aluminum.
Foam contact is made with a provided 8” diameter “indentor foot” on a pivoting coupling.  A three-position switch is provided, along with a speed controller, to allow the load to be slowly brought down onto the foam. The lead-screw will dynamically brake when releasing the switch at the correct position, (which is confirmed by reading a digital position sensor).
Decays in the foam load against the indentation form can then be monitored using a simple stopwatch.  

More Information






ASTM D3574 


GMW 14359 

Schap Laboratory Services

Let Schap Laboratory Services run this test for you. Schap Lab is an independent, third-party test lab accredited to ISO/IEC 17025 by A2LA*. We are built on over 50 years worth of executing test programs, and building test machines. We offer a wide range of capabilities to test materials such as leather, fabric, foam, rubber, plastic, and adhesives. We also offer mechanical, durability and life cycle testing of subcomponents, full assemblies and mechanical systems.

For more information, please contact Erik Johnson by calling 616.844.8259 or send an email to [email protected].

* Not every test offered by Schap Lab is covered by our A2LA accreditation. Please consult our Scope of Accreditation ( Certificate #3611.01 ) for a list of accredited services.