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  2. Strain gauge - Wikipedia

    en.wikipedia.org/wiki/Strain_gauge

    An unmounted resistive foil strain gauge. A strain gauge takes advantage of the physical property of electrical conductance and its dependence on the conductor's geometry. . When an electrical conductor is stretched within the limits of its elasticity such that it does not break or permanently deform, it will become narrower and longer, which increases its electrical resistance end-to-

  3. Truck scale - Wikipedia

    en.wikipedia.org/wiki/Truck_scale

    The difference to the scale with strain gauge in the rail is that calibratable sensors can be used for this variant and the scale is therefore calibratable. Advantages: Weighing accuracy class up to 0.2 for individual wagon weights in accordance with calibration regulations and OIML-R 106,

  4. File:Strain gauge.svg - Wikipedia

    en.wikipedia.org/wiki/File:Strain_gauge.svg

    A strain gauge, typically glued onto a sample of material to measure its deformation. The blue material is a conductor, so current must flow through the narrow vertical channels. If the gauge is stretched vertically, the channels get longer and narrower. This increases the gauge's electrical resistance, which can be measured to work out the strain.

  5. Gauge factor - Wikipedia

    en.wikipedia.org/wiki/Gauge_factor

    Gauge factor (GF) or strain factor of a strain gauge is the ratio of relative change in electrical resistance R, to the mechanical strain ε. The gauge factor is defined as: [ 1 ] G F = Δ R / R Δ L / L = Δ R / R ε = 1 + 2 ν + Δ ρ / ρ ε {\displaystyle GF={\frac {\Delta R/R}{\Delta L/L}}={\frac {\Delta R/R}{\varepsilon }}=1+2\nu +{\frac ...

  6. List of rail transport modelling scale standards - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_transport...

    In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot. The Gauge '3' Society represents this aspect of 2 + 1 ⁄ 2-inch gauge railway modelling with both electric and live steam operation. Gauge '3' corresponds to NEM II scale, also known as "Spur II" in ...

  7. Crack tip opening displacement - Wikipedia

    en.wikipedia.org/wiki/Crack_tip_opening_displacement

    A type of strain gauge called a crack-mouth clip gage is used to measure the crack opening. [3] The crack tip plastically deforms until a critical point after which a cleavage crack is initiated that may lead to either partial or complete failure. The critical load and strain gauge measurements at the load are noted and a graph is plotted.

  8. Gauge (instrument) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(instrument)

    a cylindrical ring of steel whose inside diameter is finished to gauge tolerance and is used for checking the external diameter of a cylindrical object. Strain gauge: a device used to measure the strain of an object. Thread pitch gauge, also called a threading gauge, pitch gauge, or screw gauge a device used to measure the pitch or lead of ...

  9. Stress–strain analysis - Wikipedia

    en.wikipedia.org/wiki/Stress–strain_analysis

    Stress–strain analysis (or stress analysis) is an engineering discipline that uses many methods to determine the stresses and strains in materials and structures subjected to forces. In continuum mechanics , stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other ...

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