Mechanical and Thermal Measurements by Images and Waves

This book provides a comprehensive overview of the principles underlying mechanical and electromagnetic fields and waves, followed by an introduction to the fundamental theories of analog and digital image acquisition and processing. It explores advanced techniques for measuring velocity, deformation, stress, temperature, pressure, and object shapes using image analysis and beam scanning methods. Topics include optical scanners for shape measurement, optical flow, Particle Image Velocimetry (PIV), Digital Image Correlation (DIC), infrared thermography, Thermoelastic Stress Analysis (TSA), Laser Doppler Vibrometry (LDV), Laser Doppler Anemometry (LDA), ultrasonic scanning (SONAR and echography), radio wave scanning (RADAR), and Industrial Computed Tomography (ICT), along with key wave- and image-based methods for pressure field measurements. Drawing on nearly thirty years of the authors' experience, gained through numerous research projects and collaborations with leading industries, the book presents numerous applications in non-destructive diagnostics, quality control, reverse engineering, and experimental mechanics in mechanical, civil engineering and in many other fields. It is intended to serve as both an introduction and a comprehensive reference for professors, researchers, and professionals looking to understand, evaluate, teach and effectively apply wave- and image-based measurement techniques.

Features the state of the art in image acquisition and processing Provides a comprehensive theory to understand, manage, and develop applications of many largely-used measurements Showcases all the basic concepts of image and waves analysis to perform measurements of mechanical fields

Autorentext

Gianluca Rossi is Full Professor of Mechanical and Thermal Measurements at the University of Perugia. He is also a member of the teaching board of the PhD program Sciences, Technologies and Measurements for Space at the University of Padova. He serves as President of TUCEP, a non-profit association comprising 12 Italian universities, public institutions, and private companies. TUCEP focuses on technology transfer and the proposal, development and management of European-funded projects. From 2011 to 2012, he was Visiting Professor at the Von Karman Institute for Fluid Dynamics, Belgium. He actively collaborates with numerous universities in the United States, Brasil, and across Europe. His main research interests include the development of non-contact and full-field measurement techniques based on thermoelasticity for stress field analysis, on optical methods for displacement, motion and strain measurement. He also works on non-contact vibration measurements of turbine blades using stationary sensors and on the development of measurement techniques for multiphase flow analysis.

Inhalt

Fields and waves fundamentals.- Analogic image formation.- Image digitalization.- 2D measurements by images.- 3D shape measurements by images.- 3d shape measurements by scanning techniques.- Displacement, velocity and deformation field measurements by image analysis.- Temperature and stress field measurements by thermographic image analysis.- Laser doppler anemometry, vibrometry and particle image velocimetry.- Pressure field measurements.