Laser Extensometer Technology
At Tinius Olsen we have a range of extensometer technologies, LVDT, strain gauge, encoder, video and laser. Each technology base has its strength and weaknesses hence the range and is selected because of its performance for a particular application, material to be tested and users ROI. A laser extensometer such as the Tinius 500L uses a helium neon class two laser, which means it’s very safe for use in a lab and does not require any special safety precautions. The natural blinking of the eye provides protection although we don’t recommend you look directly at the laser, frankly there is no need and it would not be easy when configured with a Tinius materials testing machine. The 500L scans the test specimen 320 times per second and automatically measures the “Gauge length – L0” it does this by capturing the reflection from two reflective marks placed on the test specimen, the leading lower edge of which is actually captured (not the whole width of the tape mark). As the sampl