Search

Dynamic Environments Testing, Volume 7: Proceedings of the 41st IMAC, A Conference and Exposition on Structural Dynamics, 2023, the seventh volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects Dynamic Environments Testing including papers on:Vibration Testing Shock TestingMulti-Axis Shaker Testing Test Fixture Design Dynamic Environment Definition Specifications for Acceptance Testing

This book includes the description, modeling and realization of new optical metrology techniques for technical diagnostics of materials. Special attention is paid to multi-step phase shifting interferometry with arbitrary phase shifts between interferograms, phase shifting and correlation digital speckle pattern interferometry, optical-digital speckle correlation, and digital image correlation, as well as dynamic speckle patterns analysis. Optoacoustic techniques can be treated as a separate branch of optical metrology and can solve many problems of technical diagnostics, including detection and localization of subsurface defects in laminated composite materials. The utility of such techniques can be increased by illumination of the object via acoustic waves at certain frequencies. Hence, an effective theoretical approach to the modeling of an elastic wave field interaction with an interphase defect, and to defect visualization using dynamic speckle patterns, is also includedin this book. The experimental proof of the proposed approaches was achieved using a specially created hybrid optical-digital system for detection of different subsurface defects. This book is intended for engineers, researchers and students engaged in the field of nondestructive evaluation of materials and technical diagnostics of structural elements, hybrid optical systems, speckle metrology and optoacoustic imaging techniques.

Advancement of Optical Methods & Digital Image Correlation in Experimental Mechanics, Volume 4 of the Proceedings of the 2020 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the fourth volume of seven from the Conference, brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on a wide range of optical methods ranging from traditional photoelasticity and interferometry to more recent DIC and DVC techniques, and includes papers in the following general technical research areas: DIC Methods & Its ApplicationsPhotoelsticity and Interferometry ApplicationsMicro-Optics and Microscopic SystemsMultiscale

This book offers a genuinely practical introduction to the most commonly encountered optical and non-optical systems used for the metrology and characterization of surfaces, including guidance on best practice, calibration, advantages and disadvantages, and interpretation of results. It enables the user to select the best approach in a given context. Most methods in surface metrology are based upon the interaction of light or electromagnetic radiation (UV, NIR, IR), and different optical effects are utilized to get a certain optical response from the surface; some of them record only the intensity reflected or scattered by the surface, others use interference of EM waves to obtain a characteristic response from the surface. The book covers techniques ranging from microscopy (including confocal, SNOM and digital holographic microscopy) through interferometry (including white light, multi-wavelength, grazing incidence and shearing) to spectral reflectometry andellipsometry. The non-optical methods comprise tactile methods (stylus tip, AFM) as well as capacitive and inductive methods (capacitive sensors, eddy current sensors).The book provides: Overview of the working principlesDescription of advantages and disadvantagesCurrently achievable numbers for resolutions, repeatability, and reproducibilityExamples of real-world applications A final chapter discusses examples where the combination of different surface metrology techniques in a multi-sensor system can reasonably contribute to a better understanding of surface properties as well as a faster characterization of surfaces in industrial applications. The book is aimed at scientists and engineers who use such methods for the measurement and characterization ofsurfaces across a wide range of fields and industries, including electronics, energy, automotive and medical engineering.

Over the last century, numerous optical techniques have been developed to characterize materials, giving insight into their optical, electronic, magnetic, and structural properties and elucidating such diverse phenomena as high-temperature superconductivity and protein folding. Optical Techniques for Solid-State Materials Characterization provides

This book has been written to provide research workers with an introd- tion to several optical techniques for new applications. It is intended to be comprehensible to people from a wide range of backgrounds - no prior optical or physics knowledge has been assumed. However, sufficient technical details have been included to enable the reader to understand the basics of the techniques and to be able to read further from the ref- ences if necessary. The book should be as useful to postgraduate students and experienced researchers as those entering the bioengineering field, irrespective of whether they have a technical or clinical background. It has been prepared with an awareness of the inherent difficulties in und- standing aspects of optics which, in the past, have precluded practical application. The contents address a broad range of optical measurement techniques which have been used in biomechanics, techniques characterized as n- contacting and non-destructive. Theoretical outlines and practical advice on gaining entry to the fields of expertise are complemented by biomec- nical case studies and key literature references. The aim is to present each technique, to appraise its advantages and capabilities and thereby to allow informed selection of an appropriate method for a particular app- cation. It is anticipated that research workers will be assisted in est- lishing new methodologies and gain first-hand experience of the techniques.