strain foil

strain foil

[′strān ‚fȯil]
(engineering)
A strain gage produced from thin foil by photoetching techniques; may be applied to curved surfaces, has low transverse sensitivity, exhibits negligible hysteresis under cycling loads, and creeps little under sustained loads.
References in periodicals archive ?
The strain foil of the test anchor rod should be deployed at two ends, 1/4 position, 1/2 position, and 3/4 position.
(1) Rebar; (2) Phyllostachys pubescens; (3) epoxy mortar; (4) strain foil; (5) compensator.