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An extensometer is a high precision instrument that geologists or civil engineers use to measure the elongation of a material under stress. This device is ideal for tensile tests. It can also calculate yield, tensile, and yield point elongation, as well as strain-hardening exponent and strain ratio.
Aside from that, extension-meters have a wide range of applications in the geotechnical field. Depending on the application, they come in a variety of shapes and sizes.
Extensometers are used in the mining industry to measure displacements on batters and highwalls. Geotechnical engineers can predict wall failures by plotting displacement versus time. For more complex failures, additional equipment such as radar or laser scans are used, allowing for 3-dimensional and eventually 4-dimensional analysis.
Clip-on devices have largely been replaced in automated testing by digital “sensor arm” extensometers. These can be automatically applied to the specimen by a motorised system and produce much more repeatable results than traditional clip-on devices.
The Global Extensometer market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
EXTENSOMETER MARKET NEW PRODUCT LAUNCH
The Encardio Rite Model EDS-64U-D single position mechanical borehole extensometer is suitable for boreholes up to 50 mm in diameter and inclined. It is a high-precision mechanical instrument used to assess the deformation of rock masses and adjacent or surrounding soil.
The Model EDS-64U-D Mechanical Borehole Extensometer System has the same construction, working principle, and specifications as the Model EDS-63U-D Mechanical Borehole Extensometer System, except that it is suitable for 50 mm upward, downward, or inclined boreholes.
The extensometer with long travel (XL) is a precise device for measuring strain in highly extensible materials. Long-travel extensometers are designed for use with electromechanical testing instruments and can measure specimen elongations of up to 30 in (750 mm). The XL is designed to quickly and easily clamp directly onto a specimen. It can be adjusted to incremental gauge lengths of 0.5 in to 5 in (10 mm to 200 mm).
Advanced composites, rigid plastics, and metals are tested using axial and biaxial extensometers that average. Independent strain measurements on opposite sides of the specimen are used to calculate the average axial strain.
The use of average strain eliminates errors caused by specimen bending and allows precise modulus values to be determined. The extensometer can measure average axial and transverse strain simultaneously by incorporating a transverse strain transducer, allowing the determination of Poisson’s ratio. In general, this type of extensometer is designed to measure small strains, such as those used to determine elastic properties.
