Conclusion

Conclusion

Holographic interferometry is an optical method that makes it possible to visualise transparent objects, helps explain the physical essence of the investigated events, enables to specify and expand the possibilities of visualisation of physical fields while the investigated area is not disturbed by sensors or sensing heads by which, for example the local temperatures or concentrations are detected.

The methods of holographic interferometry open new possibilities also for the research of physical and mechanical characteristics of strength and deformation of materials. They make it possible to proceed to the qualitative and quantitative analysis of parameters characterising the mechanism of deformation in various phases of elastic and plastic deformations. The advantage of this method is the possibility of non-contact measurement and shape comparison of the already non-existing objects. The shape of the object is recorded on a hologram, thus being saved for the future even though it may not exist factually.

We now have applications of interference methods in technical and research practice that are possible only after a thorough consideration of the measurement method by the use of a holographic interferometer with digital recording. It is necessary to lay stress on preparation of fixtures to be integrated into the holographic interferometer set-up. Applications of interference methods are nowadays largely dependent on the process of computer analysis of interferograms that enables to make precise, fast and effective analysis without subjective errors.

Holographic experimental methods that are mentioned in this monography and that were applied in experimental works can serve as methodical aid for research workers and students who use the optical methods for measurement of tensions in their work or deal with the visualisation of thermal or concentration fields. Considering their visualisation abilities they are highly suitable also for training at schools.

Part of the problem mentioned in this publication is solved within the framework of the grant project GD 1/2210/05: Optimisation of the knife and head shapes for a disintegrator of plastic materials.