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

Aiming at the problems of terminal failure detection and opaque flow status of electric energy metering network, this paper designs and implements a flow analysis system, which is divided into three parts: data acquisition layer, data analysis layer and data display layer. Combined with traffic collection, traffic statistics, cluster analysis, whitelist detection methods to achieve network traffic transparency and abnormal detection, can help network administrators to analyze network activities, has important significance for the supervision and safe operation of electric energy metering network.

Design and Implementation of Network Traffic Analysis System for Power Grid Metering System

The structure of a hypersonic craft is usually subjected to a service environment of heating and high-frequency exciting. To evaluate the vibration behaviour of the structure in a highfrequency range, the energy density governing equation to analyse high-frequency behaviour of an isotropic plate in uniform thermal environment is derived in this paper. The energy density distribution of a simply supported plate is studied, in which the thermal effect is considered as thermal stress. The energy finite element method (EFEM) formulation based on the governing equation is developed, and a simple numerical example is carried out. The numerical solution is compared with the theory solution(modal decomposition solution) to verify the validity and accuracy of the derived equation. The results show that the derived equation approximates well the smooth timeand locally space-averaged energy density of the structure under high-frequency excitation in a thermal environment, and EFEM needs a smaller number of elements than FEM’s.

High-frequency vibration analysis of a plate in thermal environment based on energy fi- nite element method

The aerodynamic environment is an important factor in the design of high-speed trains, which may lead to structural damage and comfort deterioration. This paper carries out coupled vibro-acoustic analysis based on aerodynamic evaluation to investigate the structural dynamic characteristic in "real" environment. The strategy is implemented using the commercial soft-ware ANSYS. Firstly, CFD aerodynamic analysis is carried out to calculate the dynamic pressures. These aerodynamic loads are then transited to the structural surface through fluid-structure interface using Mechanical ANSYS Parametric Design Language. The full coupled vibro-acoustic system is finally analyzed to evaluate the dynamic response and the inner noise environments. Results show that the aerodynamic pressures are ideally transmitted to structural surface, and the vibro-acoustic response mainly affects the nose cone and the train tail.

Vibro-acoustic analysis of high-speed trains under aerodynamic pressure

Network moving target defense technology can effectively defend against attacker monitoring of the service. The technology makes it more difficult for attackers to attack and can ensure secure communication for services. However, there may be multiple network attacks in the network. As a result, there may be security problems with the trustworthiness of the network resource mutation space required for network moving target defense technology. The focus of current researches is mostly on the mutation timing and cost optimization of the resource mutation space. It may lead to the possibility that the resources in the resource mutation space have been already under network attacks. In this paper, we propose a hybrid routing mutation mechanism based on mutation cost and resource trustworthiness in SDN networks. The mechanism is able to evaluate the routing mutation space selected by the routing-based network moving target defense technology. In terms of both mutation cost and resource trustworthiness, the optimal weighting ratio of the two factors will be to discovered. Simulation results show that the proposed mechanism can effectively enhance the ability of the routing mutation space to avoid attacked nodes and links and improve the transmission success rate of services.

A Hybrid Routing Mutation Mechanism based on Mutation Cost and Resource Trustworthiness in Network Moving Target Defense

Location-based service recommendations usually need to collect and analyze the location information of trajectories generated by users with smart phones or wearable devices. It is easy to cause the location privacy leaks. The current location privacy protection methods usually confuse the adversary by adding fake locations into real trajectories to achieve the goal of privacy protection. However, these methods fail to consider the utility of user trajectories in service recommendations. In this paper, we propose a privacy-preserving trajectory generation algorithm based on service semantic similarity. To improve the utility of privacy-preserving trajectories for service recommendations, the algorithm constructs a series of service semantic grid maps and generates fake individuals with privacy-preserving trajectories considering both utility and privacy. Simulation results show that the proposed algorithm can effectively hide the locations in real trajectories of individuals and obtain higher effectiveness for service recommendations.

Yueming Li

Papers

Design and Implementation of Network Traffic Analysis System for Power Grid Metering System

High-frequency vibration analysis of a plate in thermal environment based on energy fi- nite element method

Vibro-acoustic analysis of high-speed trains under aerodynamic pressure

A Hybrid Routing Mutation Mechanism based on Mutation Cost and Resource Trustworthiness in Network Moving Target Defense

Privacy-preserving Trajectory Generation Algorithm Considering Utility based on Semantic Similarity Awareness