Wentworth
Institute of Technology
Mechanical characterization of materials and wave dispersion : instrumentation and experiment interpretation /
Over the last 50 years, the methods of investigating dynamic properties have resulted in significant advances. This book explores dynamic testing, the methods used, and the experiments performed, placing a particular emphasis on the context of bounded medium elastodynamics. Dynamic tests have proven...
Saved in:
| Other Authors: | , |
|---|---|
| Format: | Electronic eBook |
| Language: | English |
| Published: |
London :
Wiley,
2013.
|
| Series: | ISTE.
|
| Subjects: | |
| Online Access: |
Full text (Wentworth users only) |
Table of Contents:
- Cover; Title Page; Copyright Page; Table of Contents; Preface; Acknowledgements; PART I
- MECHANICAL AND ELECTRONIC INSTRUMENTATION; Chapter 1. Guidelines for Choosing the Experimental Set-up; 1.1. Choice of matrix coefficient to be evaluated and type of wave to be adopted; 1.1.1. For isotropic materials; 1.1.2. For anisotropic materials; 1.2. Influence of frequency range; 1.2.1. The Williams-Landel-Ferry method; 1.3. Dimensions and shape of the samples; 1.3.1. Square section rod for longitudinal wave; 1.3.2. Rod slenderness; 1.3.3. Imposed shape and size.
- 1.4. Tests at high and low temperature1.5. Sample holder at high temperature; 1.6. Visual observation inside the ambient room; 1.7. Complex moduli of viscoelastic materials and damping capacity measurements; 1.8. Previsional calculation of composite materials; 1.9. Bibliography; Chapter 2. Review of Industrial Analyzers for Material Characterization; 2.1. Rheovibron and its successive versions; 2.1.1. Testing of filamentous sample and short rods; 2.1.2. Improvement of the Rheovibron: the Rheovibron viscoanalyzer DDV II.
- 2.1.3. Automated and improved version of Rheovibron by Princeton Applied Research Model 129 A2.2. Dynamic mechanical analyzer DMA 01dB-Metravib and VHF 104 Metravib analyzer; 2.2.1. Comments; 2.3. Bruel and Kjaer complex modulus apparatus (Oberst Apparatus); 2.3.1. Comments; 2.4. Dynamic mechanical analyzer DMA
- Dupont de Nemours 980; 2.4.1. Sample holder; 2.4.2. Measuring the Young's modulus through resonance frequency f0; 2.4.3. Comments; 2.5. Elasticimeter using progressive wave PPM 5; 2.6. Bibliography; Chapter 3. Mechanical Part of the Vibration Test Bench; 3.1. Clamping end.
- 3.1.1. Clamping length3.1.2. Applied clamping forces; 3.1.3. Influence of external force applied to the sample on compressional stress; 3.1.4. Sample holder for clamping; 3.2. Length correction; 3.2.1. Simple tests; 3.3. Supported end; 3.4. Additional weight or additional torsion lever used as a boundary condition; 3.5. Free end; 3.6. Pseudo-clamping sample attachment; 3.6.1. Mechanical design of a pseudo-clamping system; 3.7. Sample suspended by taut threads; 3.7.1. Measurement over a large range of frequencies; 3.7.2. Nature of the thread; 3.7.3. Suspension by two parallel threads.
- 3.8. Sample on foam rubber plate serving as a mattress3.9. Climatic chamber; 3.10. Vacuum system; 3.11. Bibliography; Chapter 4. Exciters and Excitation Signals; 4.1. Frequency ranges; 4.2. Power; 4.3. Nature and performance of various exciters; 4.3.1. Electrohydraulic exciters; 4.3.2. Electro-mechanical exciters; 4.3.3. Electro-magnetic exciter; 4.3.4. Piezoelectric exciter; 4.3.5. Capacitive exciter; 4.3.6. Impact hammer; 4.4. Room required for exciter installation; 4.5. Details for electrodynamic shakers; 4.5.1. Magnet circuits and the guiding system for the moving coil.