3.3.2.3 Compress to Break Step During a break test, the sample is pulled until the measured load drops by a % from the maximum load after a minimum load setpoint is achieved. This indicates a break event. When you configure a break test, you specify the Break %. This is the percentage drop in load from a measured maximum load. For example, if the measured peak load is 100 lbf, and the Break % = 20%, the break load = 80 lbf. The Minimum Break is the measured load that must first be achieved before the system starts looking for the break event. The minimum break protects against false break events in samples that exhibit significant load changes when under stress, e.g. puncture and insertion tests.
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. Load Limit - If the crosshead moves and the measured load equals this limit, the crosshead will stop.
• Select the Compression symbol • Select the Compression Break symbol • Enter your Break % (percentage drop from the peak load) • Enter the Minimum Break value • Enter the Test Speed
Enter the load (Min Break) which is the starting load- where the search for a drop in load shall begin.
Enter % drop in load value. Measured from the maximum load achieved.
Enter the Speed. This is the velocity the crosshead will move at to the 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.
L2 Plus Test Builder - Compression Step types
L2 Plus Test Builder - Compression Break Limit Moves the crosshead until a Break is achieved
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