laser extensometer

laser extensometer

[′lā·zər ‚ek‚sten′säm·əd·ər]
(optics)
A device which uses interference of laser beams to measure small changes in distance; it can operate between points as much as 0.6 mile (1 kilometer) apart, and has been used to measure effects produced by earth tides.
References in periodicals archive ?
The newsletter also focuses on the machine's laser extensometer, another optional capability.
With the need for improved measurement accuracy, new extensometers such as the non-contact laser extensometer have begun to replace the use of crosshead travel as a means of displacement measurement, dramatically improving the quality of tensile-test data.
will introduce its new pushbutton-controlled 10,000-lb capacity Series 10000 Universal Testing Machine, equipped with the company's new advanced 70H 500L Scanning Laser Extensometer and the latest version of the company's software.
An Applied Test Systems (ATS) direct tension tester (DAT) provided with an Electronic instrument Research laser extensometer Model LET-01 and an ATS environmental chamber were used to perform this test.
Duplicate testing was done at a strain rate of 5 mm/minute at room temperature on a T-2000 testing machine with a laser extensometer based on marks 12.