the use of an extensometer in civil science and solving existing problems with it

the use of an extensometer in civil science and solving existing problems with it

extensometers are used to detect vertical movements in ground. each measurement point consists of a magnetic ring with sprung legs (known as a spider).

the spiders are placed over a hollow access tube and inserted into a borehole. an extensometer is a device that is used to measure changes in the length of an object. it is useful for stress-strain measurements and tensile tests.

for automated testing clip-on devices have been largely replaced by digital "sensor arm" extensometers. in this article, a brief description of the exponentials has been made and the use of each of them and its specifications have been collected.