Full-field measurements and identification in solid mechanics / / edited by Michel Grediac, Francois Hild

• Record Nr.: UNINA9911019978703321
• Pubbl/distr/stampa: Hoboken, N.J., : ISTE Ltd./John Wiley and Sons Inc., 2013
• ISBN: 9781118578469; 1118578465; 9781299186606; 1299186602; 9781118576670; 1118576675; 9781118578476; 1118578473
• Descrizione fisica: 1 online resource (498 p.)
• Collana: Mechanical engineering and solid mechanics series
• Altri autori (Persone): GrediacMichel; HildF (Francois)
• Disciplina: 530.41
• Soggetti: Engineering mathematics; Measurement
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Title Page; Contents; Foreword; Introduction; Chapter 1. Basics of Metrology and Introduction to Techniques; 1.1. Introduction; 1.2. Terminology: international vocabulary of metrology; 1.2.1. Absolute or differential measurement; 1.2.2. Main concepts; 1.3. Spatial aspect; 1.3.1. Spatial frequency; 1.3.2. Spatial filtering; 1.4. Classification of optical measurement techniques; 1.4.1. White light measurement methods; 1.4.2. Interference methods; 1.4.3. Sensitivity vector; 1.4.4. Synthetic sensitivity vectors; 1.4.5. The different types of interferometric measurements; 1.4.6. Holography, digital holography1.4.7. Conclusion; 1.5. Bibliography; Chapter 2. Photoelasticity; 2.1. Introduction; 2.2. Concept of light polarization; 2.3. Birefringence phenomenon; 2.4. The law of optico-mechanics; 2.5. Several types of polariscopes; 2.5.1. Plane polariscope; 2.5.2. Circular polariscope; 2.5.3. White light polariscope; ; 2.5.4. Photoelastic coating; 2.6. Measurement of photoelastic constant C; 2.7. Analysis by image processing; 2.7.1. Using a plane polariscope; 2.7.2. Using a circular polariscope; 2.7.3. Using color images; 2.8. Post-processing of photoelastic parameters2.8.1. Drawing of isostatics or stress trajectories; 2.8.2. Particular points; 2.8.3. Stress separation and integration of the equilibrium equations; 2.8.4. Comparison between experimentation and numerical modeling; 2.9. Three-dimensional photoelasticity; 2.9.1. The method of stress freezing and mechanical slicing; 2.9.2. Optical slicing; 2.9.3. Application example; 2.10. Conclusion; 2.11. Bibliography; Chapter 3. Grid Method, Moiré and Deflectometry; 3.1. Introduction; 3.2. Principle; 3.3. Surface encoding; 3.4. Moiré; 3.5. Phase detection; 3.5.1. Global extraction procedure3.5.2. Local phase detection: phase shifting; 3.5.3. Measuring both components of the displacement; 3.6. Sensitivity to out-of-plane displacements; 3.7. Grid defects; 3.8. Large deformation/large strain; 3.8.1. Explicit method; 3.8.2. Implicit method; 3.8.3. Large strain; 3.9. Fringe projection; 3.10. Deflectometry; 3.11. Examples; 3.11.1. Off-axis tensile test of a unidirectional composite coupon; 3.11.2. Rigid body displacement; 3.11.3. SEM measurement; 3.11.4. Characterization of lens distortion; 3.12. Conclusion; 3.13. Bibliography; Chapter 4. Digital Holography Methods4.1. Introduction; 4.2. Basics of wave optics; 4.2.1. Light diffraction; 4.2.2. Interference; 4.3. Basics of digital holography; 4.3.1. Recording the hologram; 4.3.2. Numerical reconstruction with the discrete Fresnel transform; 4.3.3. Numerical reconstruction using convolution with adjustable magnification; 4.3.4. Sensitivity vector; 4.4. Basics of digital holographic interferometry; 4.4.1. Phase difference; 4.4.2. Spatial filtering of the phase and phase unwrapping; 4.5. Digital holographic interferometry with spatial multiplexing; 4.5.1. Principle; 4.5.2. Theory
• Sommario/riassunto: This timely book presents cutting-edge developments by experts in the field on the rapidly developing and scientifically challenging area of full-field measurement techniques used in solid mechanics - including photoelasticity, grid methods, deflectometry, holography, speckle interferometry and digital image correlation. The evaluation of strains and the use of the measurements in subsequent parameter identification techniques to determine material properties are also presented.Since parametric identification techniques require a close coupling of theoretical models and experimental m