Data Mining Practical Machine Learning Tools and Techniques

INTRODUCTION TO COMPOSITE MATERIALS Chapter Objectives Introduction Classi?cation Recycling Fiber-Reinforced Composites Mechanics Terminology Summary Key Terms Exercise Set References MACROMECHANICAL ANALYSIS OF A LAMINA Chapter Objectives Introduction Review of De?nitions Hooke's Law for Different Types of Materials Hooke's Law for a Two-Dimensional Unidirectional Lamina Hooke's Law for a Two-Dimensional Angle Lamina Engineering Constants of an Angle Lamina Invariant Form of Stiffness and Compliance Matrices for an Angle Lamina Strength Failure Theories of an Angle Lamina Hygrothermal Stresses and Strains in a Lamina Summary Key Terms Exercise Set References APPENDIX A: MATRIX ALGEBRA Key Terms APPENDIX B: TRANSFORMATION OF STRESSES AND STRAINS Transformation of Stress Transformation of Strains Key Terms MICROMECHANICAL ANALYSIS OF A LAMINA Chapter Objectives Introduction Volume and Mass Fractions, Density, and Void Content Evaluation of the Four Elastic Moduli Ultimate Strengths of a Unidirectional Lamina Coefficients of Thermal Expansion Coefficients of Moisture Expansion Summary Key Terms Exercise Set References MACROMECHANICAL ANALYSIS OF LAMINATES Chapter Objectives Introduction Laminate Code Stress-Strain Relations for a Laminate In-Plane and Flexural Modulus of a Laminate Hygrothermal Effects in a Laminate Summary Key Terms Exercise Set References FAILURE, ANALYSIS, AND DESIGN OF LAMINATES Chapter Objectives Introduction Special Cases of Laminates Failure Criterion for a Laminate Design of a Laminated Composite Other Mechanical Design Issues Summary Key Terms Exercise Set References BENDING OF BEAMS Chapter Objectives Introduction Symmetric Beams Nonsymmetric Beams Summary Key Terms Exercise Set References INDEX

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Mechanics of composite materials

3D meso-scale fracture modelling and validation of concrete based on in-situ X-ray Computed Tomography images using damage plasticity model

Generation of 3D representative volume elements for heterogeneous materials: a review

Independence-oriented VMD to identify fault feature for wheel set bearing fault diagnosis of high speed locomotive

In this paper, we focus on the vibration and acoustic response of a rectangular sandwich plate which is subjected to a concentrated harmonic force under thermal environment. The critical buckling temperature is obtained to decide the thermal load. The natural frequencies and modes as well as dynamic responses are acquired by using the analytical formulations based on equivalent non-classical theory, in which the effects of shear deformation and rotational inertia are taken into account. The rise of thermal load decreases the natural frequencies and moves response peaks to the low-frequency range. The specific features of sandwich plates with different formations are discussed subsequently. As the thickness ratio of facing to core increases, the natural frequencies are enlarged, and the response peaks float to the high-frequency region. Raising the Young's modulus of the core can cause the similar trends. The accuracy of the theoretical method is verified by comparing its results with those computed by the FEM/BEM.

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Vibration and Acoustic Response of Rectangular Sandwich Plate under Thermal Environment

X-ray tomography image-based reconstruction of microstructural finite element mesh models for heterogeneous materials

Passive control of nonlinear aeroelasticity in hypersonic 3-D wing with a nonlinear energy sink

Effect of radiative heat transfer on determining thermal conductivity of semi-transparent materials using transient plane source method

This paper investigates the dynamic and vibration energy harvesting behaviors of defect phononic crystal beams in thermal environments. Variations in the first bandgap and the defect band for flexural waves are discussed with different geometric parameters of the defect cell and structural temperatures by using the supercell technique for infinite defect phononic crystal beams. Transmission characters of defect models with a finite length are studied, considering the influence of thermal loads, and the performance of the defect based energy harvesting is discussed as well. Predicted results indicate that temperature increments reduce the frequency ranges of bandgap and defect band due to the softening effect of thermal load on the phononic crystal beam, and the performance in defect based energy harvesting is obviously depressed with temperature rise. Defect cells with a higher content of the soft component are beneficial for generating defect modes which have relatively stable frequencies in thermal environments. However, higher levels of open-circuit voltage and output power of harvested energy are more likely to be generated with defect cells which have a higher content of the hard component.

Yueming Li

Papers

Vibration and Acoustic Response of Rectangular Sandwich Plate under Thermal Environment

X-ray tomography image-based reconstruction of microstructural finite element mesh models for heterogeneous materials

Passive control of nonlinear aeroelasticity in hypersonic 3-D wing with a nonlinear energy sink

Effect of radiative heat transfer on determining thermal conductivity of semi-transparent materials using transient plane source method

Flexural wave manipulation and energy harvesting characteristics of a defect phononic crystal beam with thermal effects