STRAIN GAUGE INSTALLATION - OMEGA

E-12 ESTRAIN GAGESSTRAIN GAUGE INSTALLATIONHOW TO POSITION STRAIN GAUGES TO MONITORBENDING, AXIAL, SHEAR, AND TORSIONAL LOADS STRAIN is defined as the ratio of thechange in length to the initialunstressed reference length. A straingauge is the element that senses thischange and converts it into anelectrical signal. This can beaccomplished because a straingauge changes resistance as it isstretched, or compressed, similar towire. For example, when wire isstretched, its cross-sectional areadecreases; therefore, its important factors that must beconsidered before selecting a straingauge are the direction, type, andresolution of the STRAIN you wish measure minute strains, the usermust be able to measure minuteresistance changes. The WheatstoneBridge configuration, shown inFigure B, is capable of measuringthese small resistance the signs associated with eachgauge numbered 1 through 4. Thetotal STRAIN is always the sum of thefour strains.

E-12 E STRAIN GAGES STRAIN GAUGE INSTALLATION HOW TO POSITION STRAIN GAUGES TO MONITOR BENDING, AXIAL, SHEAR, AND TORSIONAL LOADS “Strain” is defined as the ratio of the

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