MEGE Strain Gauge Training Unit NEW www.edibon.com

Strain Gauge Training Unit
MEGE
NE
Technical Teaching Equipment
W
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INTRODUCTION
The strain gauges are sensors whose resistance varies with the force applied. They convert force, tension, pressure, etc. into a change of the
electrical resistance, which can be measured. They are used in different systems to detect deformations, forces and moments.
The Strain Gauge Training Unit (MEGE) allows to study strain gauges and their application for the measurement of strain.
GENERAL DESCRIPTION
The Strain Gauge Training Unit (MEGE) provides an introduction to the fundamentals of measurement with strain gauges, to compare how
resistance strain gauges work and how they measure strains in different structures (torsion, tension and bending systems).
The unit consists of a frame, which allows to place several measuring specimens quickly and precisely.
Three test specimens (bars) for torsion, tension and bending are each fitted with four strain gauge measuring points. The bars are loaded
incrementally, allowing for the strain reading to be monitored.
The strain gauges are inside a transparent cover that protects them and make them clearly visible for the visualization of the process.
The unit includes a set of weights, two weight holders to give each specimen (bar) a range of stress, and a console with an amplifier and a
digital display to show all readings.
Three additional tension bars are available as accessories, in aluminum, copper and brass, to determine the elasticity modulus (Poisson's
ratio and Young's modulus) in the exercises.
SPECIFICATIONS
The unit includes:
Anodized aluminum frame.
Three strain gauge test specimens (bars), each with strain gauge measuring points in full bridge circuit:
Torsion test bar:
- Material: stainless steel.
- Length: 500mm.
- Diameter: 10mm.
Tension test bar:
- Material: stainless steel.
- Length: 50mm.
- Cross-section: 2x10mm.
Bending test bar:
- Material: stainless steel.
- Length: 400mm.
- Cross-section: 4x25mm.
Strain gauge measuring point: full bridge, 350Ω.
The strain gauges are inside a transparent cover that protects them and make them clearly visible for the visualization of the process.
Set of weights:
10 x 0.5N.
1 x 5N.
2 x 10N.
1 x 20N.
It includes a 1N weight holder and a 5N weight holder, and an adjustable rider.
Console:
Metallic box.
Strain gauge connector.
Digital display for the strain gauge.
Amplifier:
- Measuring range: +/-2mV/V.
- Zero balancing adjustment.
Manuals: This unit is supplied with the following manuals: Required services, Assembly and Installation, Starting-up, Security, Maintenance
and Practices manual.
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EXERCISES AND PRACTICAL POSSIBILITIES
1.- Introduction to the fundamentals of measuring with strain
gauges.
7.- Study of the correlation between mechanical strain and
electrical resistance in a strain gauge.
2.- Study of the strain gauges and application techniques.
8.- Study of the tensile strain and stress in different materials
and comparison of the elasticity modulus (Poisson's ratio
and Young's modulus) of additional tension bars (optional
accessories).
3.- Study of the strain and stress in a torsion system.
4.- Study of the strain and stress in a tension system and the
elasticity modulus (Poisson's ratio and Young's modulus).
9.- Comparison of different strain measurement systems and
how they could measure force.
5.- Study of the strain and stress in a bending system.
6.- Calculation of the mechanical deformations under torsion,
tension and bending.
DIMENSIONS & WEIGHTS
REQUIRED SERVICES
-Electrical supply: single-phase, 220V./50Hz or 110V./60Hz.
MEGE:
Unit:
-Dimensions: 600 x 450 x 600 mm. approx.
(23.62 x 17.72 x 23.62 inches approx.)
-Weight:
20 Kg. approx.
(44 pounds approx.)
Electronic console:
-Dimensions: 300 x 190 x 130 mm. approx.
(11.81 x 7.48 x 5.11 inches approx.)
-Weight:
2.5 Kg. approx.
(5.51 pounds approx.)
OPTIONAL ACCESSORIES
-MEGE-A1. Tension test bar, aluminum.
-MEGE-A2. Tension test bar, copper.
-MEGE-A3. Tension test bar, brass.
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Optional
MEGE/CAI. Computer Aided Instruction Software System:
With no physical connection between unit and computer (PC), this
complete software package consists of an Instructor Software
(INS/SOF) totally integrated with the Student Software
(MEGE/SOF). Both are interconnected so that the teacher knows at
any moment what is the theoretical and practical knowledge of the
students.
+
Unit
Instructor
Software
Student
Software
Example of software screens
I N S / S O F. C l a s s r o o m M a n a g e m e n t
Software (Instructor Software):
Instructor Software
The Instructor can:
- Organize Students by Classes and
Groups.
- Create easily new entries or delete them.
- Create data bases with student
information.
- Analyze results and make statistical
comparisons.
- Generate and print reports.
- Detect student’s progress and difficulties.
...and many other facilities.
This software, working in network
configuration, allows controlling all the
students in the classroom.
Student Software
MEGE/SOF. Computer Aided Instruction
Software (Student Software).
It explains how to use the unit, run the
experiments and what to do at any moment.
- This software contains:
Theory: gives the student the theoretical
background for a total understanding of
the studied subject.
Exercises: divided by thematic areas and
chapters to check out that the theory has
been understood.
Guided Practices: presents several
practices to be done with the unit,
showing how to perform the exercises and
practices.
Exams: set of questions to test the
obtained knowledge.
For more information see CAI catalogue. Click on the following link:
www.edibon.com/products/catalogues/en/CAI.pdf
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Optional
MEGE/CAL. Computer Aided Learning Software (Results Calculation and Analysis):
This Computer Aided Learning Software (Results Calculation and Analysis) “CAL” is a Windows based software, simple and very easy to use,
specifically developed by EDIBON.
CAL is a class assistant that helps in doing the necessary calculations to extract the right conclusions from data obtained during the experimental
practices. With a single click, CAL computes the value of all the variables involved and performs the calculations.
Also, CAL allows to plot and print the results. Within the plotting options, any variable can be represented against any other.
Available different plotting displays.
It has a wide range of information, such as constant values, unit conversion factors and integral and derivative tables.
On a table, we introduce data obtained during the
development of the exercise.
Above this table, it is shown “Constants” theoretically
involved with the field of study. The values of these
“Constants” may be modified to our convenience,
assigning the appropriate values.
Simply, by clicking on "COMPUTE", CAL performs the
calculations of the desired variables.
We can save and print the data of the experiment or
calculations.
Also we can load any data file saved previously.
With the calculated variables, CAL gives the option of plotting the results. It is possible to
represent any variable against any other. It has the option of representing the graph with
different layouts. Screens below give an example of the multiple choices.
CAL has a wide range of help information. By clicking the button
"ADDITIONAL HELP" opens a window where we have information about
typical Constants, International System Units, Conversion Factors, and
Table of Main Integrals and Derivatives (General), and there is other
specific help for the particular unit.
For more information see CAL catalogue. Click on the following link:
www.edibon.com/products/catalogues/en/CAL.pdf
*Specifications subject to change without previous notice, due to the convenience of improvements of the product.
REPRESENTATIVE:
C/ Del Agua, 14. Polígono Industrial San José de Valderas.
28918 LEGANÉS. (Madrid). SPAIN.
Phone: 34-91-6199363 FAX: 34-91-6198647
E-mail: [email protected] WEB site: www.edibon.com
Issue: ED01/15
Date: January/2015
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