Materials Testing, Cement Equipment, Tensile Steel Test, Universal Devices, blaine finesses, mortar mixer, vicat, le Chatelier, jolting table, Langavant, EN-12390, EN-10002-1, EN-196, ASTM C-305, Quality Control Projects

The next step after video-extensometry is laser video-extensometry which, apart from avoiding the inconvenient of manually specimen marking by adhesive tapes, metallic clips and so on, works at very high temperatures (furnaces up to 1500º C) with very low Lo (> 1mm) and in both directions (tension – compression). The Lo is determined by bright marks emitted by laser diodes and registered by 2 video-cameras (master and slave).

An advance image processing system converts the relative displacement of these marks in a strain signal, which is exported to the materials testing machine control system.

This type of extensometer allows Lo adjustments from 0 to 250 mm, maximum elongation up to 990 mm and measuring precision as per EN 10.002/4 Class 1.