The video shows the spatially resolved dynamic machanical analysis (DMA) of an o-ring.
The probing direction is axial at the zenith and along the o-rings round geometry. The probe tip penetrates the material in a modulating manner and delivers at each measuring point the storage and loss modulus and the ratio between them, the tan (d). The different values are shown in color in the form of a three dimensional diagram on top of the o-ring.
This form of visualization vividly shows the inhomogeneities present inside the component and helps to assess material and production-related deviations in the component.