3.3.2 Tensile Steps Break and input tension steps always move the crosshead upwards. Tension movements are “pull” movements. L3 Series supports four types of tension steps: Load, Distance, Break and Load Rate. You may have multiple tension steps within a test setup. 3.3.2.1 Tensile to Load Step The Tension Load Limit move causes the crosshead to typically move upward until it meets a load setpoint. You define the load target (setpoint), which is measured by the load cell sensor during your test. When this load is measured, the step concludes on to the next step or if no additional steps is in your sequence, the test ends. • Select the Tension symbol • Select the Tension Load symbol • Enter your Load Target and Test Speed NOTE Each test step may have an individual Test Speed. NOTE If you have two load targets with the first target at 100N and the second target at 50N, the crosshead will move to 100N (upward) and then move to 50N (downward).
These are the Exceptions for this step. An exception is an event. An exception stops the test. Exceptions are optional, but are recommended. Distance Limit - If the crosshead moves this distance and the Load Limit has not be achieved, the test will stop. Break % - If the sample breaks the test will stop. A break is defined as when the load drops by this percentage value after a Minimum Load has been achieved and there is a maximum load measured. Min Break - This is the minimum load that must first be achieved before the system begins to look for a Break % drop in load.
Enter the target Load Limit. This step will conclude when this load is achieved.
Enter the Speed. This is the velocity the crosshead will move at to the Limit.
Pull to the Home position
Pull to a Load Limit
When Collect Data = Yes, the individual data points for this test step are acquired and saved for exporting. When Collect Data = No, no data points are collected or saved. The step is just a “goto” without any data collected.
Pull to a Distance Limit
Pull to a Break Limit
Pull at a Load Rate to a Load Limit
L3 Test Builder - Tensile Step types
L3 Test Builder - Tensile Load Limit Moves the crosshead until a Load is achieved
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