Sponge Indentation Hardness and Fatigue Testing Machine

I. Application

This machine is used to determine the indentation hardness of cellular  elastic materials. It can be used to perform tests on polyurethane sponge foam  specimens in accordance with the requirements of applicable national standards,  accurately determining the indentation hardness of materials such as sponge and  foam.

It can also be used to measure the specified indentation hardness of  manufactured seat foams, such as backrest and seat cushion foams, accurately  determining the indentation hardness of various foam components used in  seats.

II. Principle

In the sponge foam compression stress test, the specimen is placed between  the upper and lower compression plates. The upper compression plate moves  downward at a specified speed and compresses

the specimen to the specified indentation depth required by the national  standard for Method A (Method B or Method C).

The load cell detects the applied pressure and feeds the signal back to the  controller for processing and display, thereby determining the indentation  hardness of sponge, foam, and other test materials.

III. Functional Features

1.Automatic Zeroing: After receiving the test start command, the computer  automatically resets the system to zero.

2.Automatic Return: After the specimen breaks, the machine automatically  returns to the initial position.

3.Automatic Range Switching: Different measurement ranges can be switched  according to the applied load to ensure measurement accuracy.

4.Adjustable Test Speed: The test speed can be freely adjusted according to  different specimens.

5.Indication Calibration: The system enables accurate calibration of the  force value.

6.Control Methods: According to test requirements, various test methods can  be selected, including test force, test speed, displacement, and strain.

7.Multi-Purpose Machine: Equipped with load cells of different  specifications, the machine can perform multiple types of tests.

8.Curve Data Tracking: After the test is completed, the force and deformation  data at individual points on the test curve can be selected and analyzed using  the mouse.

9.Display: Test data and curves are dynamically displayed throughout the test  process.

10.Results: Test results can be saved and retrieved, and data curves can be  analyzed.

11.Limit Protection: The machine is equipped with both programmable and  mechanical limit protection.

12.Overload Protection: The machine automatically stops when the applied load  exceeds the rated value.

IV. Technical Specifications