InfiniSpring® Performance Testing – Shock Loads

infinispring — Sun, 13 Oct 2024 20:01:31 +0000

In the acoustic product tests, we noticed that InfiniSpring®-springs have very large plastic deformation capacity. The spring loads were above 200 kg before the steel rivets failed. Springs in the acoustic products are for loads up to 25 kg and InfiniSpring®-springs experienced very large plastic deformations in the tensile tests, but did not fail.

The acoustic product tensile tests with very large plastic deformations made us want to increase the loading speed and to see InfiniSpring® shock load performance. InfiniSpring® 3HS20 was chosen for the tests. It is cut out of a 3 mm thick sheet metal plate, weighting only 38 grams. This spring can carry loads up to 20 kg.

In the shock tests a chain is connected to the spring and on the other end of the chain there is a 9 kg mass. InfiniSpring® 3HS20 can carry the 9 kg static mass easily. In the shock test this mass is first lifted higher and then dropped in order to gain an impact force for the spring. Spring deforms due to this impact and reduces the impact force significantly. Tests and test results are shown in the video below:

InfiniSpring® 3HS20 tests and tests results concluded:

Test 1:
• Dropped mass is 9 kg
• Drop height is 1 meter
• The spring length increases 50 mm
• The spring absorbs 90 Joules of energy

Test 2:
• Dropped mass is 9 kg
• Drop height is 2 meters
• The spring length increases 110 mm
• The spring absorbs 170 Joules of energy

InfiniSpring® laser cut sheet metal steel springs are highly effective against shock loads. Shock loads need to be managed, for example in explosions and seismic events.

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InfiniSpring® Overload Performance Testing – Tensile Tests

infinispring — Fri, 27 Sep 2024 08:42:47 +0000

We have done several tests for the InfiniSpring® Acoustic Products during last year. For the acoustic hanger products integrated fail-safe system was validated. Below video shows the fail-safe system in action for the acoustic hanger AH60N. Acoustic hanger load is shown in kilograms in the video. Final failure occurs for the GK-1 PN steel profile, from which the hanger shears through at 300 kg load. Tested acoustic hanger is for static loads up to 25 kg and the ceiling system failure occurs on a load level of 300 kg (12 x nominal load) giving very high safety margin for the acoustic hangers.

Similar tests have been also completed for acoustic wall ties. Acoustic wall ties are not equipped with a fail-safe system and the video below shows the final failure mechanism for an Acoustic Wall Tie AWT94NA. The test revealed that InfiniSpring®-spring has extremely large plastic deformation capacity. The spring stretches similarly as a chewing gum and it has a new shape after the test. The spring does not fail, and the final failure occurs as the acoustic wall tie riveted joint failed on a load level of 210 kg (8 x nominal load).

These highly positive test results for the acoustic products have made us to test InfiniSpring®-springs even more. We have now more recently tested overload and shock load capacity for the springs. We will present these test results also shortly.

The post InfiniSpring® Overload Performance Testing – Tensile Tests appeared first on InfiniSpring.

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InfiniSpring® Performance Testing – Shock Loads

InfiniSpring® Overload Performance Testing – Tensile Tests