A high performance strain gage based on the stressimpedance effect in magnetic amorphous wires

Foşalău, Cristian; Damian, Celina Maria; Zet, Cristian

doi:10.1016/j.sna.2012.12.014

Cited by 21 publications

(20 citation statements)

References 27 publications

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“…The wire exhibits the stress impedance effect, a kind of magnetoimpedance effect in which the wire impedance is changing as soon as it is subjected to an axial or torsional stress (Fosalu et. al;2013;Shen et. al;1997).…”

Section: A Description Of An Hssgmentioning

confidence: 98%

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A Highly Sensitive Transducer for Landslide Monitoring

Foşalău

Zet

Petrisor

2017

Mijst

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The paper presents construction details and experimental characteristics of a transducer devoted to measuring soil displacement during landslides. It consists of a flexible rod on which special highly sensitive strain gages are glued so that rod deformation can be accurately measured. Beside its high sensitivity, the transducer is also characterized by the possibility of measuring soil levels displacements in depth, being thus useful for geologists to study the structure and dynamics of such a phenomenon. Index Terms-landslide, strain gage, amorphous magnetic micro wire, stress impedance effect.

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Section: A Description Of An Hssgmentioning

confidence: 98%

“…Each HSSG has a gage factor of about 2000, leading thus to a very high sensitivity of the MP and of the whole transducer (Fosalu et. al;2013). The whole ensemble is supplied by a couple of solar panels mounted in the near neighborhood of the transducer.…”

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confidence: 99%

A Highly Sensitive Transducer for Landslide Monitoring

Foşalău

Zet

Petrisor

2017

Mijst

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“…According to this, the MAM impedance changes with applied stress, as shown in Fig. 3 [9]. SI effect is a variant of magnetoimpedance (MI) effect, which is a well known effect occurring in such kind of materials, having many practical applications [11].…”

Section: B Sensing Elementmentioning

confidence: 98%

“…The landslide transducer sensing element is a full bridge composed of four highly sensitive strain gauges (HSSG) based on magnetic amorphous microwires (MAM), as shown in Fig. 2 [9]. A HSSG consists of two parallel MAMs of 10 mm, bonded on a plastic film which, in turn, is applied on the surface subject to strain.…”

Section: B Sensing Elementmentioning

confidence: 99%

“…This voltage ensures a current of about 10 mA through the MAMs. It has been proved that 10 mA/1 MHz is the optimal current/frequency at which one obtains the maximum sensitivity and linearity for the HSSG [9]. SB is a complete strain bridge that provides as outputs two voltages, U' A and U' B , whose amplitudes are dependent on the deformation magnitude and orientation of the rod.…”

Section: Signal Conditioningmentioning

confidence: 99%

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A New Landslide Inclinometer Using Highly Sensitive Gauges

Foşalău

Zet

Petrisor

2014

International Journal on Smart Sensing and Intelligent Systems

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The paper presents a device devoted to detect and measure earth displacements produced by landslides. It is part of inclinometer type geotechnical instruments and is based on measuring the deformation produced to a rod vertically mounted into the ground during soil layers sliding. With respect to other commercial devices, our inclinometer is characterized by high sensitivity to very small deformations owing to special strain gauges utilized in its construction, and also by possibility of 3D measuring, it being able to gauge in depth the amplitude and orientation of the soil layers displacement.

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