Transmitted Light Polariscope- Engineering Lab Training Systems Description and Specifications for Lab Tenders
Transmitted Light Polariscope- Engineering Lab Training Systems.
Technical Description
Using this transmitted light
polariscope, photoelastic experiments can be performed. This process
exploits the fact that the refractive index of photoelastically
sensitive materials changes under mechanical stress. Transmitted
polarised light experiences a rotation of its plane of polarisation,
this results in lines in the material subject to the same stress being
of the same colour. The distribution of the stress in the model can thus
be clearly seen. The polariscope can either generate coloured stress
diagrams using white light or, using monochromatic light, light-dark
diagrams. The filters, which have angular scales, can be rotated in a
holder mounted on rollers. On the side is a pointer using which the
angular position can be read off. Light sources, polarisation filters
and load frames are separate components on this unit. Thus it is
possible to realise flexible experimental set-ups also with own models.