Showing papers in "Advances in Mechanical Engineering in 2017"
TL;DR: In this article, a computational framework for probabilistic modeling of the fatigue damage accumulation of short to medium span bridges under actual traffic loading was presented, where stochastic truck-load models were simulated based on site-specific weigh-in-motion measurements.
Abstract: Bridges are vulnerable to the fatigue damage accumulation caused by traffic loading over the service period. A continuous growth in both the vehicle weight and the traffic volume may cause a safety hazard to existing bridges. This study presented a computational framework for probabilistic modeling of the fatigue damage accumulation of short to medium span bridges under actual traffic loading. Stochastic truck-load models were simulated based on site-specific weigh-in-motion measurements. A response surface method was utilized to substitute the time-consuming finite element model for an efficient computation. A case study of a simply supported bridge demonstrated the effectiveness of the computational framework. Numerical results show that the simulated fatigue stress spectrum captures the probability density functions of the heavy traffic loading. The equivalent fatigue stress range increases mostly linearly in the good road roughness condition with the growth of the gross vehicle weight. The vehicle typ...
223 citations
TL;DR: The Modularity Application Matrix is introduced – a conceptual tool that leads to a better understanding of partial modularization in relation to products and contributes with new theoretical developments as well as a practical tool for practitioners in industries usingpartial modularization, such as the construction and building industry.
Abstract: The application of modular products is seen as an important enabler for delivering customized products competitively. However, many companies struggle to find ways to implement modular products in ...
191 citations
TL;DR: This article presents the design modeling of a novel 3-RRS spherical parallel mechanism for ankle rehabilitation applications and a method for forward position analysis is developed with variation and iteration approaches, which is suitable for motor position control.
Abstract: This article presents the design modeling of a novel 3-RRS spherical parallel mechanism for ankle rehabilitation applications. The kinematics of the 3-RRS spherical parallel mechanism is establishe...
169 citations
TL;DR: In this article, the authors studied the parameter estimation to the system response from the discrete measurement data, by constructing the dynamical rolling cost functions and using the nonlinear optimization, t
Abstract: This article studies the parameter estimation to the system response from the discrete measurement data. By constructing the dynamical rolling cost functions and using the nonlinear optimization, t...
160 citations
TL;DR: The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated in this paper.
Abstract: The effect of nanoclay on various material properties like damping and strength of typical thermoset polymers, such as epoxy and vinyl ester, was investigated. Different environmental conditions ty...
148 citations
TL;DR: Three improved false matches elimination algorithms based on distance from epipole to epipolar line is proposed and this algorithm can also solve the real-time calibration of the shrink-amplify center for zooming images.
Abstract: Feature matching is one of the most important steps in the location technology of zooming images. According to the scale-invariant feature transform matching algorithm, several improved false matches elimination algorithms are proposed and compared in this article. First, features of zooming images and ranging models are introduced in detail in the theory framework of the scale-invariant feature transform feature detection and matching algorithm. The key role of the feature matching algorithm and false matches elimination in the ranging technology of zooming images is discussed and addressed. Second, false matches are eliminated by the proposed approach based on geometry constraint in zooming images with a higher accuracy. Third, false matches are removed by an elimination algorithm based on properties of the scale-invariant feature transform features. Finally, an iterative false matches elimination algorithm based on distance from epipole to epipolar line is proposed and this algorithm can also solve the...
139 citations
TL;DR: The results of this research show that phase change material application areas are mainly concentrated into four parts of north latitude from 20° to 60° and south latitude from 25° to 40°, and the use of paraffin is the broadest.
Abstract: In the past several decades, many literatures have emerged on the topic of phase change material and latent heat storage techniques used in building. Accordingly, it is essential to review previous...
122 citations
TL;DR: This article develops the model of a connected multi-car train system and discusses the improvement of stability and performance by the inerter, a genuine two-terminal element, whose reacting force is proportional to the relative acceleration across its terminals.
Abstract: This article develops the model of a connected multi-car train system and discusses the improvement of stability and performance by the inerter. The inerter is a genuine two-terminal element, whose...
107 citations
TL;DR: It is concluded that rapid prototyping technique can replace conventional manufacturing for complicated structure conformal cooling channel which improves quality and productivity.
Abstract: This article aims to provide an overview of applications of rapid prototyping–assisted conformal cooling channel and shows the potential of this technology in different manufacturing processes. Thi...
71 citations
TL;DR: In this paper, an attempt has been made to explore the potential performance of Al2O3 nanoparticle-based cutting fluid in hard milling of hardened 60Si2Mn steel (50-52 HRC) under different minimu...
Abstract: In this article, an attempt has been made to explore the potential performance of Al2O3 nanoparticle–based cutting fluid in hard milling of hardened 60Si2Mn steel (50-52 HRC) under different minimu...
65 citations
TL;DR: In this paper, a double-resonant coil ferrite rod antenna for radio frequency energy harvesting in medium frequency band is proposed for structural health monitoring applications, which can be used for maintaining and monitoring various structures in different areas.
Abstract: Structural health monitoring is widely used for maintaining and monitoring various structures in different areas. In general, the structural health monitoring system life span depends on the capability of the batteries, but it can be increased by energy harvesting approaches to autonomously produce power. These autonomously powered structural health monitoring systems have received increasing attention over the past decades. This article reviews recent developments in the ambient energy sources and energy harvesting methods for structural health monitoring applications. First, the earliest and most common method of harvesting energy from sunlight and wind is discussed. Then, vibration and thermal gradient energy harvesting methods are reviewed together with their feasibilities. Finally, radio frequency energy harvesting, a unique method developed in recent years, is highlighted. A double-resonant coil ferrite rod antenna for radio frequency energy harvesting in medium frequency band is proposed. Simulatio...
TL;DR: The proposed approach can provide a scientific and efficient solution for cloud service supplier selection of manufacturing enterprise and can be used to sequence the suppliers by their weighted index-value matrix.
Abstract: In this article, a conjunctive multiple-criteria decision-making approach for cloud service supplier selection of manufacturing enterprise is proposed. According to the two perspectives of technolo...
TL;DR: In this article, the cavitation performance with influence of blade tip clearance for a mix of blades was studied. But the authors did not consider the influence of the geometry of the blade tip.
Abstract: Cavitation phenomenon has strong transient characteristics and is highly influenced by geometric structure. In this study, the cavitation performance with influence of blade tip clearance for a mix...
TL;DR: The effect of relational and non-relational parameterization techniques on the robustness and flexibility of the conceptual design of a multidisciplinary product and their effect on flexibility and robustness indicate that the relational parameterization is an efficient method in theMultidisciplinary design optimization process.
Abstract: Multidisciplinary design optimization has become a powerful technique to facilitate continuous improvement of complex and multidisciplinary products. Parametric modeling is an essential part with t ...
TL;DR: In this paper, the authors analyze the logistic equation with a new derivative of fractional order termed in Caputo-Fabrizio sense, which describes the population growth of species.
Abstract: In this work, we aim to analyze the logistic equation with a new derivative of fractional order termed in Caputo–Fabrizio sense. The logistic equation describes the population growth of species. Th...
TL;DR: Directed metal deposition by means of laser beam is investigated in this article, where the process is receiving increasingly interest in the frame of additive manufacturing to the purpose of maintenance, and it is shown that the process can be used for a variety of applications.
Abstract: Directed metal deposition by means of laser beam is investigated in this article. The process is receiving increasingly interest in the frame of additive manufacturing to the purpose of maintenance...
TL;DR: In this article, a cyber-physical manufacturing system formal model based on object-oriented Petri nets is presented from the perspective of multi-agent systems, and a spreading dynamics model is proposed, and its dynamic behaviors are analyzed.
Abstract: Cyber-physical manufacturing systems are a new paradigm of manufacturing systems that integrate cyber systems and physical systems to aid smart manufacturing. Cyber-physical manufacturing systems can improve agility and responsiveness and guarantee the quality of products to meet the market requirements. Meanwhile, cyber-physical manufacturing systems also become susceptible to cyber-attacks. In order to improve the trustworthiness of cyber-physical manufacturing systems in the dynamic modeling phase, a cyber-physical manufacturing system formal model based on object-oriented Petri nets is presented from the perspective of multi-agent systems. Some mathematical methods and supporting tools of Petri nets can be utilized to analyze, verify, and validate cyber-physical manufacturing system formal model. To defense the malicious software spreading in cyber-physical manufacturing systems at run-time, a spreading dynamics model is proposed, and its dynamic behaviors are analyzed. A hybrid bifurcation control me...
TL;DR: A new energy-efficient scheduling mathematical model considering productivity, energy efficiency, and noise reduction with flexible spindle speed for the job shop environment is proposed and an effective multi-objective genetic algorithm based on simplex lattice design is proposed.
Abstract: Most traditional scheduling problems prioritize optimizing production efficiency, cost, and quality. However, with gradually increasing energy consumption and environmental pollution, the novel “en...
TL;DR: In this paper, the nonlinear damping characteristics of magnetorheological damper are expressed with hyperbolic tangent model to simulate its mechanical experimental results and fitted hyperboli...
Abstract: In this article, the nonlinear damping characteristics of magnetorheological damper are expressed with hyperbolic tangent model to simulate its mechanical experimental results. The fitted hyperboli...
TL;DR: In this article, the failure of the solder joints is attributed to the failure due to the defect of the soldering process of the joints. But due to their superior electrical, thermal, and mechanical properties, solder joints are the most widely used interconnection materials in electronic product packaging.
Abstract: Owing to their superior electrical, thermal, and mechanical properties, solder joints are the most widely used interconnection materials in electronic product packaging. Because the failure of the ...
TL;DR: A hybrid technique based on convolutional neural network and support vector regression is proposed, which is used to promote feature extraction capability and multi-class classification in rolling element bearings and gears.
Abstract: Rolling element bearings and gears are the most common machine elements. As they are extensively used in rotating machinery, their health conditions are crucial to the safe operation. The signals m...
TL;DR: A review of multidimensional prognostic models that have been applied to predict the failures of rotating machinery with multiple sensors can be found in this article, where the authors provide a guide for researchers considering prognosis options for multi-sensor rotating equipment.
Abstract: Determining prognosis for rotating machinery could potentially reduce maintenance costs and improve safety and availability. Complex rotating machines are usually equipped with multiple sensors, which enable the development of multidimensional prognostic models. By considering the possible synergy among different sensor signals, multivariate models may provide more accurate prognosis than those using single-source information. Consequently, numerous research papers focusing on the theoretical considerations and practical implementations of multivariate prognostic models have been published in the last decade. However, only a limited number of review papers have been written on the subject. This article focuses on multidimensional prognostic models that have been applied to predict the failures of rotating machinery with multiple sensors. The theory and basic functioning of these techniques, their relative merits and drawbacks and how these models have been used to predict the remnant life of a machine are discussed in detail. Furthermore, this article summarizes the rotating machines to which these models have been applied and discusses future research challenges. The authors also provide seven evaluation criteria that can be used to compare the reviewed techniques. By reviewing the models reported in the literature, this article provides a guide for researchers considering prognosis options for multi-sensor rotating equipment.
TL;DR: In this paper, an efficient methodology to reproduce road profiles on a four-poster rig is presented: such a methodology can reproduce the real-world environment in order to be effective.
Abstract: Indoor testing should reproduce the real-world environment in order to be effective. In this article, an efficient methodology to reproduce road profiles on a four-poster rig is presented: such a m...
TL;DR: A key part that provides precision and long life to machine tools is the hydrostatic bearing as discussed by the authors, which is one of the embodiments of tribology, mechanics, optimization method, and structural design in engine design.
Abstract: Hydrostatic bearing is a key part that provides precision and long life to machine tools. It is one of the embodiments of tribology, mechanics, optimization method, and structural design in enginee...
TL;DR: In this paper, the plastic-damage factor of concrete structures is determined for structural load-capacity assessment, while it has not been determined properly, and two methods perspectively based on the plastic damage factor are presented.
Abstract: The plastic-damage factor of concrete structures is important for structural load-capacity assessment, while it has not been determined properly. In this article, two methods perspectively based on...
TL;DR: In this paper, the influence of several parameters on surface morphology and etch rate in a high-aspect-ratio silicon etching process was empirically investigated and two function formulas were obtained.
Abstract: This study empirically investigates the influences of several parameters on surface morphology and etch rate in a high-aspect-ratio silicon etching process. Two function formulas were obtained, rev...
TL;DR: Spectral clustering technique, an unsupervised learning method, is applied to analyze daily traffic state variation for the region road network based on section-based traffic speed dataset, which transforms traditional clustering problems into graph partition problems, which is suitable for the clustering Problems with multiple attributes by dimension reduction.
Abstract: The traffic state evolution of urban road network is complicated and varies significantly with different roads, functional zones, and social activities. Considering the regularity of human travel a...
TL;DR: In this paper, uncertainty-based design and optimization is becoming one of the research focuses for high safety of complex engineering systems and evaluating failure probability is essential and necessary in uncerted systems.
Abstract: Uncertainty-based design and optimization is becoming one of the research focuses for high safety of complex engineering systems. Evaluating failure probability is essential and necessary in uncert...
TL;DR: In this paper, the stability of the power grid may be affected by the random and unpredictable nature of photovoltaic power generation, which is a major green energy resource, and its generated power can be directly connected to the grid.
Abstract: Photovoltaic power is now a major green energy resource, and its generated power can be directly connected to the power grid. However, the stability of power grid may be affected by the random and ...
TL;DR: In this paper, a new approach for bridge flood fragility analysis is proposed, where reliability analysis is performed in conjunction with finite element analysis, which can sophisticatedly simulate the structural response of a bridge under a flood by accounting for flood-rela...
Abstract: Bridges are one of the most important infrastructure systems that provide public and economic bases for humankind. It is also widely known that bridges are exposed to a variety of flood-related risk factors such as bridge scour, structural deterioration, and debris accumulation, which can cause structural damage and even failure of bridges through a variety of failure modes. However, flood fragility has not received as much attention as seismic fragility despite the significant amount of damage and costs resulting from flood hazards. There have been few research efforts to estimate the flood fragility of bridges considering various flood-related factors and the corresponding failure modes. Therefore, this study proposes a new approach for bridge flood fragility analysis. To obtain accurate flood fragility estimates, reliability analysis is performed in conjunction with finite element analysis, which can sophisticatedly simulate the structural response of a bridge under a flood by accounting for flood-rela...