Measurement of Strain and Displacement in Cryogenic Environment with Strain Gauges.

Nanoscale Displacement and Strain Measurement

The mechanical testing of micro-electro-mechanical systems (MEMS) and nano-electro-mechanical systems (NEMS) requires precise measurements of displacement and strain in the nanometer scale. Integrated testing devices, including specimens, actuators and sensors, were designed and fabricated to overcome the aligning and gripping difficulties faced by previous separated micromechanical testing app...

Measurement of strains in fixed bridges with electronic strain gauges.

Displacement of Bridge Monitoring Techniques with Strain Measurement

General methods of displacement measurement are to use LVDT, tiltmeter, or laser deflection meter. But these methods can’t be applied effectively if bridge height is so high that the installation of sensor is difficult. So the great part of in these cases, the reliability and accuracy of measured results are uncertain usually. To overcome this problem, in this paper, the two techniques for calc...

Nonlinearity and Hysteresis of Resonant Strain Gauges

Nonlinearity and hysteresis effects of electrostatically activated, voltage driven resonant microbridges have been studied theoretically and experimentally. It is shown, that, in order to avoid vibration instability and hysteresis to occur, the choices of the ax . and d.c. driving voltages and of the quality factor of a resonator, with a given geometry and choice of materials, are limited by a ...

Fibre Bragg Sensors Compared with Electrical Strain Gauges for Use in Force Measurement - Prospects and Potentials

− This article deals with the technical properties of fiber Bragg gratings with regard to their use as the strain-sensitive element in force transducers. Electrical strain gages are widely used in modern, precise force transducers. The electrical strain gage provides both outstanding technical properties and cost-effectiveness. Besides the electrical strain gage, the measurement principle of fi...