Extensometer was invented by Charles Houston in 1879. Houston later gave rights to Fairbanks & Ewing (a manufacturer of scales and testing machines). Traditionally, extensometers are the most convenient and widely used instruments for the measurement of strains in a material test specimen. These extensometers are based on contact techniques.
However, non-contacting optical techniques are becoming more important. An extensometer is an instrument used to check the changes in the dimension (especially length) of an object. Extensometers are useful for stress strain measurement and tensile tests. The extensometers are divided into two categories: contact and non-contact. In recent years, significant developments have happened in the area of noncontact extensometers – extensometers based on laser and video technology have been developed.
In the mining industry, extensometers are used to measure displacements on high/batters. Plotting time verses displacement enables engineers to determine if walls are failures about to happen. And for difficult failures, equipment such as lasers and radar scans are used, which allow three-dimensional and four-dimensional analysis. Some of the standards associated with extensometers are ASTM E83 Standard for classification and verification of Extensometers and ASTM D4403 standard for the extensometer used in rock.
Increasing mining activity across various regions will spur the demand in the extensometer market. Mining industry contributes a healthy share to a country’s GDP. Even mining done on a small scale contributes a healthy share to the entire mineral production. However, various rules and regulations associated with extraction of minerals could hamper the growth of the extensometers market. Increasing scope of applications involving integrity test of materials such as metals, composites and polymers in construction, automotive and other industrial sectors are deemed to offer future growth opportunities for the Extensometers market.
Over the years, the mining industry has developed through a year-long process that has brought together more than hundreds of stakeholders from governments, private sector, non-governmental and international organizations. Moreover, growing urbanizations & industrialization, particularly in emerging economies, will lead to demand for commodities from metal and mining industries. People living in cities consume higher share of resources – their population is expected to get doubled in near future. Due to the aforementioned reasons, the demand for mining will increase, which in turn, will increase the demand in the extensometers market.
North America and Europe have beenthe traditional markets adopting the extensometers in related uses since inception. These regions are expected to find a fair share of extensometers with an optimal growth rate. However, with the crux shift of manufacturing and construction sectors towards developing countries and emerging economic regions of South East Asia is projected to witness a significant growth over the forecast period
Examples of some of the market participants/vendors operating in the Extensometer market across the globe are:
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Contact extensors measure extension accurately and are cost-effective. Though, clip-on extensometers need more physical involvement and, without maintenance, can present incorrect test results. Sensor arm extensometers provide high accuracy and ease of use owing to their entirely automatic operation, which includes the setting of variable gage lengths. Non contacts extensometers are required when the specimen is sensitive to knife edges or when the extensometer may get damaged in case of a test specimen failure. Next laser extensometers are used for materials where traditional clip on an extensometer or mass of clip affects the materials properties due to being physically attached to sample. Laser extensometers can be used for testing at sub-zero or elevated temperatures. A video extensometer is a device which is capable of performing stain/stress measurements of certain materials, by taking continuous images of the specimen during tests, using a digital video camera or frame grabber attached to a personal computer.
On the basis of type, the Extensometer market can be segmented into:
On the basis of function, the Extensometer market can be segmented into:
On the basis of application, the Extensometer market can be segmented into:
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Extensometer Market
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