ESPI is a high sensitive measurement system for measuring very small deformations.

The interferometrical method ESPI is well suited to measure smallest 3D displacements and plane strain with a resolution of approx. 10 nanometers or 1 micrometer per meter.

The high measuring resolution in the determination of deformation and strain is well suited for:
- Material testing
- Strength assessment
- Optimization of constructions
- Investigations of linear and non-linear behavior
- Characterization of creep and aging properties
- Verification of numerical simulations
- Characterization of heterogeneous materials

Important factors in the product development process are the component optimization, usage of new materials and the improvement of numerical calculation models. In all these areas a better understanding of the material and component behavior is necessary. ESPI supports these processes with easily understandable results from complex deformation procedures.