782. Electrical resistance-strain characteristics of thin evaporated metal films

Vacuum ◽  
1964 ◽  
Vol 14 (8) ◽  
pp. 314
Keyword(s):  
Electrical Resistance ◽  
Metal Films ◽  
Resistance Strain ◽  
Electrical Resistance Strain

scholarly journals Field Techniques for Experimental Stress Analysis in Arctic Sea Ice

1980 ◽  
Vol 25 (91) ◽  
pp. 175-182
Author(s):  
G. V. B. Cochran
Keyword(s):  
Sea Ice ◽  
Electrical Resistance ◽  
Three Dimensional ◽  
Arctic Sea Ice ◽  
Resistance Strain ◽  
Strain Gauges ◽  
Experimental Stress Analysis ◽  
Arctic Sea ◽  
Glacier Ice ◽  
Electrical Resistance Strain

AbstractIncreasing interest is being directed toward studies involving measurement of strain and strain-rates in sea and glacier ice. A number of techniques for obtaining these data over gauge lengths ranging from 1 m to several kilometers have been reported, but there has been little experience with shorter lengths. Use of commercially available electrical resistance strain-gauges (length 5–20 cm) intended for embedment in concrete offers a new approach in which multiple gauge, two- and three-dimensional arrays can be installed in ice with minimum effort and monitored with portable equipment. This report describes a pilot study designed to demonstrate the use of three types of electrical resistance strain gauges in sea ice under exposed field conditions. Results include detection of variations in strain fields related to tidal currents.

Mechanical Hysteresis in Force Transducers Manufactured from Precipitation-Hardened Stainless Steel

1995 ◽  
Vol 209 (2) ◽  
pp. 125-132 ◽  
Author(s):  
T Allgeier ◽  
W T Evans
Keyword(s):  
Electrical Resistance ◽  
Treatment Process ◽  
Force Transducer ◽  
Resistance Strain ◽  
Strain Gauges ◽  
Material Behaviour ◽  
Mechanical Hysteresis ◽  
Force Transducers ◽  
Strain Relationship ◽  
Electrical Resistance Strain

A non-linear, anelastic stress-strain relationship, hereafter called mechanical hysteresis, which leads to a significant error in the output signal of electrical resistance strain gauge force transducers, has been confirmed to be a general phenomena in precipitation-hardened stainless steels. The mechanism of mechanical hysteresis has been found to be due to the material behaviour; nevertheless, the design of the force transducer and details of the electrical resistance strain gauges could impose further minor effects on the size of the error. Some of the secondary influencing factors (for example loading and mounting details) have been eliminated in the course of the investigation. Using a specially developed heat treatment process, it has been possible to substantially reduce the hysteresis error, which in turn improves the force transducer accuracy.

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