A5053685209- Electromagnetic Scattering and Analysis
- Material Properties and Failure Mechanisms
- Engineering Diagnostics and Reliability
- Ultrasonics and Acoustic Wave Propagation
- Numerical methods in inverse problems
- Non-Destructive Testing Techniques
- Electromagnetic Simulation and Numerical Methods
- Microwave Imaging and Scattering Analysis
- Industrial Engineering and Technologies
- Thermography and Photoacoustic Techniques
- Optical measurement and interference techniques
- Geophysical Methods and Applications
- Advanced Antenna and Metasurface Technologies
- Material Properties and Applications
- Optical Coatings and Gratings
- Hydrogen embrittlement and corrosion behaviors in metals
- Gyrotron and Vacuum Electronics Research
- Surface Roughness and Optical Measurements
- Microwave Engineering and Waveguides
- Electromagnetic Compatibility and Measurements
- Electromagnetic Effects on Materials
- Magnetic Properties and Applications
- Geotechnical and Geomechanical Engineering
- Optical and Acousto-Optic Technologies
- Experimental and Theoretical Physics Studies
G.V. Karpenko Physical-Mechanical Institute
2012-2024
National Academy of Sciences of Ukraine
2009-2024
National Academy of Sciences
2008-2014
University of Wisconsin–Madison
2005
Chuo University
2005
Waseda University
2005
Electron (Ukraine)
2005
Zhejiang University
2005
The peculiarities of the interaction hydrogen with low-carbon steels were studied by magnetoacoustic emission method (MAE). It was established that low concentration in steel structure has an insignificant effect on their elastic characteristics. Hydrogen contributes to increase MAE 16% under induction a magnetic field 0.92 T, and for plastically deformed steel, presence 23% compared non-hydrogenated material. less carbon greater influence MAE. dualistic nature generation is illustrated:...
Three mathematical models based on approximate surface integral equations for electromagnetic analysis of scalar wave scattering from thin extended target are considered.Such include different systems the second kind singular determined median.The effective algorithm direct (without preliminary regularization) numerical solution is special quadrature formulae integrals.Verification and their comparison performed in case penetrable cylindrical shell homogeneous non-magnetic medium.
The analytical regularisation technique for rigorous solution of dual series equations in diffraction theory structures, which consist coaxial perfect (perfectly conducting, rigid or soft) conical sections, is proposed. sections do not form biconical regions and the continuation their generatrices has a single crossing point. proposed approach based on mode matching as well establishing rule correct transition to infinite systems linear algebraic receiving solutions, provide fulfilment all...
The problem of diffraction a plane acoustic wave by finite soft (rigid) cone is investigated. This one formulated as mixed boundary value for the three-dimensional Helmholtz equation with Dirichlet (Neumann) condition on surface. diffracted field sought expansion unknown velocity potential in series eigenfunctions each region existence sound pressure. solution then reduced to infinite set linear algebraic equations (ISLAE) first kind means mode matching technique and orthogonality properties...
A novel nondestructive testing method for subsurface defects detection in thin composite structures using dynamic laser speckles is proposed. In this method, a laminated panel containing defect excited by frequency scanned ultrasonic (US) wave and illuminated an expanded beam. If one of resonant frequencies the coincides with US frequency, local area (a region interest or ROI) optically rough surface, placed directly above defect, begins to vibrate, sequences difference speckle patterns...
We solve the problem of normal waves diffraction in an elastic layer rigidly connected with interface on crack under action antiplane dynamic loading. The Wiener–Hopf technique is applied for solution. resonance vibrations system main mode are investigated. subtractive synchronized electronic speckle pattern interferometry and approach based estimation motion surface areas multilayer composites were developed detection subsurface defects. Experimental breadboards realizing these techniques...