WS-MMT1 Multifunctional Experimental Equipment
This product is mainly used for experiments for Mechanics of Materials in Engineering Colleges. You can do a variety of experiments on mechanics of materials on this device, with only slight changes of the device for each experiment.

Load is provided by a spiral worm gear. Measurement is performed on load with a force sensor and on strain with a strain gage. The test bench's structure is compact, load can be steadily provided, and it is simple for student to operate. It can produce high quality experimental results with this device. Other tests can be added to the device as needed. The strain instrument inside the device can connect to a computer where data acquisition and processing can be performed.

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.

System Composition and Principle
The system is composed of base, pure bending specimens, sensors, strain instrument, strain gage, wires and so on. The strain instrument can connect to a computer where data can be processed. Through the electrical test method, a few basic parameters in mechanics of materials can be measured and analyzed, and the results can be compared with the theoretical values.

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 on 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
  (6) Determination of the size and the direction of the principal stress
  (7) Measurement of bending moment and torque separately under the combined action of the bending and torsion
  (8) Equal strength tests on variable cross-sections
  (9) Bending normal stress test on equal strength beams

  Experimental device
      Dimension: 700x475x1080mm (27.56x18.70x42.52")
Maximum loading: 8kN
Maximum loading displacement: 30mm (1.18")
Loading speed: 0.12mm/r
The handwheel load torque: 0~2.5N.m
Weight: 70kg
  Pure Bending Beam
  Dimension: 700x20x40mm (27.56x0.79x1.58")
Maximum loading: 4kN
Elastic modulus: E=190~210GPa
Poisson's ratio: µ=0.26~0.33
  Calibration Beams
  Dimension: 700x15x25mm (27.56x0.59x0.98")
Maximum loading: 4kN
Elastic modulus: E=190~210GPa
Poisson's ratio: µ=0.26~0.33
  Three-point Deflectometer
  Dial Indicator
   Measuring range: 0~10mm
   Resolution: 0.01mm
Support Span: 200mm
  Seamless Steel Pipe (Hollow Shaft)
  Outside Diameter: 40mm (1.58")
Inside Diameter: 32mm (1.26")
Length: 345mm (13.58")
Length of the sector arm: 240mm (9.45")
Elastic modulus: E=190~210GPa
Poisson's ratio: µ=0.26~0.33
Preload: >100N
Maximum Loading: <700N
  Equal Strength Beam
  Dimension: 520mm (20.47")
Maximum Loading: 0~50N
Elastic modulus: E=190~210GPa
Poisson's ratio: µ=0.26~0.33
  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
  Bar Stability Specimen
  Dimension: 316x20x2mm (12.44x0.79x0.89")
Elastic modulus: E=190~210GPa
Poisson's ratio: µ=0.26~0.33
Meterial: Steel
Diagram of Tensile Specimen

Diagram of Bar Stability Specimen
  Force Sensor
  Model: KMC-3C/500
Measuring range: 500kg (1103lb)
Rated Output: 2.3±0.025mV/V
Nonlinearity: ±0.03%FS
Input Resistance: 385±10 Ohm
Output Resistance: 350±3 Ohm
Excitation Voltage: 10VDC
Screw thread: M16x1.5mm
Deep of the screw thread: 20mm
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
  Puring Bending Beam, Base, Loading Bar, Hand Wheel, Frame, Adjustable chassis, Bearing beam, Indenter, Sensor, Worm lifting devices, Tab Ruler, Three-point Deflectometer, Dial Indicator, Calibration Beam, Joint Support, Tensile Specimen, Sector Arm, Strain Rosettes, Carriage, Equal Strength Beam, Strain Gage, Compression Bar.
  Diagram of the Equipment

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