Use of foil strain gauges in ice over a wide loading rate

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Journal titleCold Regions Science and Technology
Pages14558; # of pages: 88
Subjectice; strain; measuring devices; general purpose bonded resistance foil gauges; small strain measurement; pure ice; natural arctic sea ice; mounting on ice; uniaxial loading conditions; wide stress rate range; displacement gauge comparisons; effective modulus of ice
AbstractThe use of general purpose bonded resistance foil gauges has been examined for measuring small strain in both laboratory made pure ice and natural Arctic sea ice. A method for mounting the gauges on ice has been developed. Experiments were carried out under uniaxial loading conditions in a wide stress rate range of 1 x 10 [-3] to 1.25 x 10 [2] MN m [-2] s [-1] at -20!C and the responses of the foil gauges were compared with those of a displacement gauge also mounted on the ice. Observations indicated that the foil gauges can be used reliably for stress rates less than 1 x 10 [-1] MN m [- 2] s [-1]. Analysis of the system indicates that weak bond at the interface between the gauge carrier and the adhesive layer of ice results in damped response of the gauges and limits their use at higher loading rates. This test series has also provided, for the first time, experimental data on the dependence of effective modulus of ice on stress rate up to 1.2 x 10 [2] MN m [-2] s [-1] or a frequency of about 100 Hz.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number30218
NPARC number20386333
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Record identifier2455c3e7-6dc0-4943-92bb-f3455dd0c506
Record created2012-07-25
Record modified2016-05-09
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