The shattered plastic casing of a music tape cassette,showing the reel of magnetic tape contained within. When photographed through cross polarised light,coloured patterns are visible which correspond to stress areas in the plastic casing; areas of similar colour correspond to regions under a similar degree of stress. This phenomenon,known as photoelasticity,is used to predict stress forces in real objects,eg during the design of a motor vehicle axle. Transparent plastic models with loads proportional to those in the real object are made to determine the stress distribution | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Aprahamian, Peter |
Taille de l’image : | 2691 px × 3097 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |