Experimental And Demonstration Polariscope

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Experimental-And-Demonstration-Polariscope

Product Code: AEM023

Experimental And Demonstration Polariscope Manufacturer

Experimental And Demonstration Polariscope

It is placed on an overhead projector (not supplied), with the image projected on to a screen, and, used either in a laboratory or a lecture theatre, allows a striking demonstration of the stress fields in the loaded models.
It is also designed for quantitative work for tensile, compressive or flexural loading.
A system – unique to this unit – also allows the simultaneous rotation of the polarizer and the analyser for the isoclinal lines study.

The Polariscope consists of the following elements :

  • A model-loading frame.
  • An elastic load-measuring device, which uses a steel spring beam, and a micrometer dial gauge.
  • The device has a linear deflexion/load relation-ship.
  • A rotatable circular polarizing unit, in a graduated mount, carried on runners under the loading frame.
  • A quarter ware plate.
  • A rotatable circular analyser can be rotated through 180°.

The three units are carried on a pillar integral with the loading frame. The polarizer and the analyser are coupled so that they may turn simultaneously.

  • A set of fixtures required for the application of the loads to all the models supplied.
  • A set of models in the appropriate photo elastic material for example, a disk, a ring, a beam, etc.
  • Polarizer diameter : 200 mm
  • Model loading area : 190 x 220 mm.
  • Light source : standard overhead projector source (white light). Monochromatic light obtained with green
    filter swung into path of light beam.
  • Maximum load on models : ± 40 kg.

Teaching objectives

  • Observation of the stress concentration.
  • Study of strength of materials.
  • Structures analysis in civil engineering

Fields of application 

  • Strength of materials.
  • Structures, civil engineering and architecture.
  • Applied mechanics, machine design, and welding technology.
  • Soil mechanics.
  • Biomechanics.

Dimensions and weight

  • 420 x 320 x 350 mm.
  • Net weight : 4 kg.

Essential requirements

  • Additional Equipment required.
  • Overhead projector.

Complementary equipment

  • Analogue field plotters, 24 channels .
  • This unit can be used in conjunction with the Polariscope for the separation of the principal stresses.
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