Скачать или смотреть Select Strain Gage Length Based on Strain Distribution

As with most structural materials, load testing is an invaluable tool to ensure reliability and safety when using non-metallic materials. So, can you use micro-measurements strain gage sensors on composite or concrete? Of course! As with nearly all structural materials, strain measurement product selection, surface preparation and strain sensor installation techniques are the key to accurate strain measurement on composite and concrete.
Gage size selection for composite or concrete is based upon the same principles as with any other non-homogenous material. The grid length should span 3-5 repetitions of the grain structure to take advantage of the strain gage sensor “strain averaging” properties. Additionally, higher gage resistance values will improve zero stability by reducing current flow through the Wheatstone bridge circuit which in turn reduces the chance of self-heating.
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