Analysis of holographic interferogram of microelectromechanical system with non harmonic cycles excitation

Recent technological trends based on miniaturization of mechanical, electromechanical and photonic devices to the microscopic scale have led to the development of microelectromechanical systems (MEMS). Effective development of MEMS components requires the synergy of advanced design, analysis, and fabrication methodologies as well as application of quantitative metrology techniques for characterizing their performance, reliability and integrity during design stage. In this paper, we describe analysis of holographic interferograms of MEMS links which includes interferometric fringes related to deformation appearing because of the non-harmonic excitation of MEMS link

Analysis holographic interferogram of links of vibrating systems

A procedure for calculating the amplitudes of the normal components of the displacement vector in case of threedimensional vibrations of any point on the surface of mechanical vibrating system is proposed on the basis of experimental holographic interfrometry data and the theory of vibrations of mechanical systems. The analysis of fringe in holographic interferogram is based on several holographic interferogram of the vibrating links of wave mechanical system which are obtained using Time-Average holographic interferometry metho

Holographic interferometry methods for analysis & design of rotary converter

A rotary converter used in mechanisms that require high precision displacement has proved that accuracy depends both on design and technological factors. An important feature of mechatronic systems containing links made of active sandwich beam is the performance of various functions by the same transducer thereby enabling the development of improved design methods. The analysis of various parameters and constructions of mechatronic systems has made it possible to introduce the mechanism containing a rotary converter which can turn any top around or turn a screw. A holographic interferometry method has been applied in the experimental work [1, 2

Application of laser methods for identification of authenticity of documents fabricated from thermoplastic composite material

Processes of globalization and integration are pervasive all over the world, and rapid innovation of advanced transportation systems resulted in enormous increase in number of persons travelling cross-border. Normally, persons crossing the border are checked at the first control line. Therefore, application of innovative methods that allow identification of partial alterations in a document or a fully counterfeit document, for initial checking of documents remains a relevant issue. The holographic interferometry represents one of the non-destructive control methods applicable for document check that enables assessment of defects in the entire area of a document being checked. This paper presents validation of the real-time method of holographic interferometry used for document check as well as parameters of a holographic setup, description of document investigation and analysis of the obtained finding

3D holographic visualization of vibrations of cylindrical piezoceramic transducers

The piezoelectric material used in cylindrical transducers requiring high-precision displacements indicates that accuracy depends on design and technological factors. The analyzed criteria have enabled selection of piezoelectric material for optimal mechatronic systems having maximum displacement. Experimental investigation of precision dynamic systems by means of 3D holographic visualization enabled to collect appreciably more information about the vibrating surface in comparison with traditional methods. The developed methodology of analysis of experimental data derived from 3D holographic visualization using holographic measurement stand allowed to obtain results that are indispensable for optimization of design of mechatronic systems or its constituent elements

Analysis of holographic interferogram of microelectromechanical system with non harmonic cycles excitation

Recent technological trends based on miniaturization of mechanical, electromechanical and photonic devices to the microscopic scale have led to the development of microelectromechanical systems (MEMS). Effective development of MEMS components requires the synergy of advanced design, analysis, and fabrication methodologies as well as application of quantitative metrology techniques for characterizing their performance, reliability and integrity during design stage. In this paper, we describe analysis of holographic interferograms of MEMS links which includes interferometric fringes related to deformation appearing because of the non-harmonic excitation of MEMS link

Analysis holographic interferogram of links of vibrating systems

A procedure for calculating the amplitudes of the normal components of the displacement vector in case of threedimensional vibrations of any point on the surface of mechanical vibrating system is proposed on the basis of experimental holographic interfrometry data and the theory of vibrations of mechanical systems. The analysis of fringe in holographic interferogram is based on several holographic interferogram of the vibrating links of wave mechanical system which are obtained using Time-Average holographic interferometry metho

Holographic interferometry methods for analysis & design of rotary converter

A rotary converter used in mechanisms that require high precision displacement has proved that accuracy depends both on design and technological factors. An important feature of mechatronic systems containing links made of active sandwich beam is the performance of various functions by the same transducer thereby enabling the development of improved design methods. The analysis of various parameters and constructions of mechatronic systems has made it possible to introduce the mechanism containing a rotary converter which can turn any top around or turn a screw. A holographic interferometry method has been applied in the experimental work [1, 2

Application of laser methods for identification of authenticity of documents fabricated from thermoplastic composite material

Processes of globalization and integration are pervasive all over the world, and rapid innovation of advanced transportation systems resulted in enormous increase in number of persons travelling cross-border. Normally, persons crossing the border are checked at the first control line. Therefore, application of innovative methods that allow identification of partial alterations in a document or a fully counterfeit document, for initial checking of documents remains a relevant issue. The holographic interferometry represents one of the non-destructive control methods applicable for document check that enables assessment of defects in the entire area of a document being checked. This paper presents validation of the real-time method of holographic interferometry used for document check as well as parameters of a holographic setup, description of document investigation and analysis of the obtained finding

Application of laser methods for identification of authenticity of documents fabricated from thermoplastic composite material

Processes of globalization and integration are pervasive all over the world, and rapid innovation of advanced transportation systems resulted in enormous increase in number of persons travelling cross-border. Normally, persons crossing the border are checked at the first control line. Therefore, application of innovative methods that allow identification of partial alterations in a document or a fully counterfeit document, for initial checking of documents remains a relevant issue. The holographic interferometry represents one of the non-destructive control methods applicable for document check that enables assessment of defects in the entire area of a document being checked. This paper presents validation of the real-time method of holographic interferometry used for document check as well as parameters of a holographic setup, description of document investigation and analysis of the obtained finding