[Apparatus Purpose]
The machine is used to test foam fatigue by repeating indentation
of a test piece, the maximum load reached during each cycle being
kept within specified limits. The machine test foam hardness and
height before fatigue test and also hardness change and height loss
after pounding fatigue test.
The Foam fatigue test machine is used to determine the concave
hardness of porous elastic materials. It can measure the sample of
polyurethane sponge foam to carry out the test specified in the
national standard, and accurately measure the indentation hardness
of sponge, foam and other materials. It can also be used to measure
the specified indentation hardness of the produced seat foam (such
as backrest, seat cushion foam, etc.), and accurately measure the
indentation hardness of each foam part of the seat.
[Principle]
Sponge foam compressive stress test places the sample between the
upper and lower platens, and the upper platen compresses a sample
of a certain size at a specified speed to the concavity specified
by the A method (B method, C method) required by the national
standard When the load cell on it feeds back the sensed pressure to
the controller for processing and display, so as to measure the
indentation hardness of materials such as sponge, foam and other
samples.
[Standard]
ASTM D3574, ISO 3385, ISO 2439
[Features]
1. Automatic reset: After the computer receives the command to
start the test, the system will automatically reset.
2. Automatic return: After the sample breaks, it will automatically
return to the initial position.
3. Automatic shifting: according to the size of the load, different
gears can be switched to ensure measurement accuracy.
4. Change speed: This machine can change the test speed arbitrarily
according to different samples.
5. Calibration of indication value: the system can realize accurate
calibration of force value.
6. Control method: Test methods such as test force, test speed,
displacement, and strain can be selected according to test needs.
7. One machine with multiple functions: Equipped with sensors of
different specifications, it can realize one machine with multiple
functions.
8. Curve traversal: After the test is completed, you can use the
mouse to arbitrarily find out the point-by-point force value and
deformation data of the test curve and analyze it.
9. Display: Dynamic display of data and curve test process.
10. Results: The test results can be accessed, and the data curve
can be analyzed.
11. Limit: with program control and mechanical limit.
12. Overload: Automatic shutdown when the load exceeds the rated
value.
[Specifications]
| Control mode | LCD Touch screen control |
| Induction mode | Precision load element |
| Capacity | 200kg |
| Unit switch | Kg, N, LB |
| Pressure plate | overall diameter of 250 mm± 1 mm with a 25 mm± 1 mm radius at its
lower edge, provided with a device for applying a maximum force of
750 N ± 20 N during one loading cycle |
| Lower platform | 420×420mm, porosity diameter 6mm, spacing 20mm |
| Maximum stroke | 200mm |
| Test speed | (70 ± 5) times/min (adjustable) |
| Counter | 1-999,999cycles |
| Power source | Servo motor |
| Transmission mode | Precision ball screw |
| Power source | Single-phase, 220V, 50Hz/60Hz, 2.5A |
| Weight | 100kg |
| Dimension(L×W×H) | 600×500×800mm |
