For one specific customer project, the research and development department had to fulfill the specific requirements for a tensile test on custom-developed steel micro specimens. The customer wanted to measure the elongation with minimum initial gauge lengths (up to 1 mm), which poses a challenge.
The optimal solution: the zwickiLine 2.5 kN universal testing machine with micro specimen grips and the laserXtens 1-15 HP. Under the given constrained specimen conditions, only an optical extensometer is able to measure the elongation. With particularly high resolution and a telecentric lens, the laserXtens 1-15 HP extensometer is the ideal solution for such small specimens. Even though the extensometer is rated for a minimum gauge length (L0) of 3 mm, smaller values, starting at 1 mm, can be easily set in the testXpert III testing software.
This solution was pre-tested in the laboratory and won the customer’s approval.