Large Gage Patterns
The strain gage patterns listed below employ long
measuring grids, and are most commonly used for
special-purpose applications where strain averaging
is desired. For example, when measuring strain in
concrete it is usually the average strain that is
sought rather than any severe local fluctuations in
strain occurring at the interfaces between the
aggregate particles and the cement. In general, for
strain measurement on nonhomogeneous material it is
preferable to select a gage length that is large with
respect to the size of the inhomogeneity The large
gage patterns listed below are well-suited to many of
these applications. |