3.3.3 Compression Steps Compression steps move the crosshead in an downward direction. Compression movements are “push” movements. Your L3 Series supports three types of compression steps: Load, Distance and Break/ Rupture and Load Rate. You may have multiple compression steps within a test setup. 3.3.3.1 Compress to Load Step The Compression Load Limit move causes the crosshead to move downward until it meets a load setpoint. You define the load target (setpoint), which is measured by the load cell sensor during your test. Once this load is achieved, the test or the step is completed.
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.
• Select the Compression symbol • Select the Compression Load symbol • Enter your Load Target and Test Speed
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 - Compression Step types
L3 Test Builder - Tensile Load Limit Moves the crosshead until a Load is achieved
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