WS-MMT2 Pure Bending Beam Experiment Bench
In bridges, building structures and other engineering projects, pure bending deformation is very common. In this experiment, strain and deflection is measured to analyze the basic properties of structures and materials. If the equipment is slightly modified, you can perform the experiment of bar stability, concentric tension and compression, eccentric tension and compression and so on. The experiment enables students to learn the dialectical relationship between theory and practice, but also enhances their practical abilities.

System Composition and Principle

This product is designed with enclosed steel frame and cast composition with careful surface treatment. It is a durable fastening structure. For each type of experiment, the product equips with specimens and surface treatment samples and accessories. The system consists of Base, Pure Bending Beam, Sensor, Strain Instrument, Strain Gage, wires and so on. The strain instrument can connect to a computer and the data can be processed with our software.
The basic principle of this strain-stress electrical measurement method: measuring a specimen's surface strain with strain gage, then the specimen's surface stress state is determined according to the strain-stress relationship. The strain-stress electrical measurement method is not only used to validate the basic theory of mechanics of materials, to measure the mechanical properties of materials, but also is a major engineering testing means for solving engineering problems. It provides a good experimental basis for scientific research.

Contents of Experiment


Normal stress regularity of distribution in cross sections of pure bending beams
(2) Strain gage sensitivity coefficient calibration
(3) Elastic modulus and Poisson's ratio determination
(4) Eccentric tension
(5) Bar stability

  Experiment Bench
    Dimension: 700x450x1015mm (27.56x17.72x39.96")
  Loading speed: 0.12mm/r
  Maximum loading displacement: 50mm (1.97")
  Overload capacity: 150%
  Weight: 45kg (99.27 lb)
    Diagram of the experiment bench
  Pure Bending Beam
    Dimension: 700x20x40mm (27.56x0.79x1.58")
  Maximum loading: 5000N
  Elastic modulus: E=190~210GPa
  Calibration Beams
    Dimension: 700x15x40mm (27.56x0.59x1.58")
  Maximum loading:1500N
  Elastic modulus: E=190~210GPa
  Poisson's ratio: µ0.26~0.33
  Three-point Deflectometer, Dial Indicator
  Dial Indicator
    Measuring range: 0~10mm
    Resolution: 0.01mm
  Tensile Specimen
  Dimension: 220x30x5mm (8.66x1.18x1.97")
  Maximum loading: 1500N
  Elastic modulus: E=190~210GPa
  Poisson's ratio: µ=0.26~0.33
  Meterial: Steel
  Force Sensor
    Model: KMC-3C/1000
  Measuring range: 1000kg (2206 lb)
  Rated output: 2.3±0.025mV/V
  Nonlinearity: ±0.03%FS
  Input resistance: 385±10 Ohm
  Output resistance: 350±10 Ohm
  Excitation voltage: 10VDC
  Temperature range: -20°C to +60°C(-4°F to 140°F)
  Materials: Alloy steel, Stainless steel

  Diagram of the force sensor
Components of the System
Beam, Support feet, Hand Wheel, Box, Worm Lifting Devices, Sensor, Rod, Indenter, Bearing Beam, Base, Castor, Support, Strain Instrument.

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