Engineering Commons^™

Modelingrandom Kelvin Cell Micro-Structure For Open-Cell Foam And Its Application On Compression Response Of Open-Cell Aluminum Foam, Minju Qi, Guangfa Gao

Journal of System Simulation

Abstract: It is very difficult to model an applicable microstructure for the open cell foams. Using the Python scripting language and the commercial code ABAQUS, the structures for regular Kelvin cell, regular Kelvin open cell foams and random Kelvin open cell foams were designed and modeled automatically. The methodology for modeling, the design and implement for the key algorithms in the process of modeling were presented. For the open cell Aluminum foam, the regular Kelvin cell open cell model and the random Kelvin cell open cell foams model were developed, respectively, and the mechanical responses of them under quasi-static …

Study On Personalized Data Driven Method Of Surface Of 3d Liver Models, Guodong Chen, Jiexiong Wang, Chen Yi

Journal of System Simulation

Abstract: The personalization of 3D liver models and the acquisition of liver models with high precision are two key technologies in virtual surgery systems. A personalized data-driven method aiming at the problems of time efficiency and precision of liver models was proposed. The liver model with high precision from previous research achievements and personal CT datasets were processed respectively, and then some feature points were marked on both the model and the CT datasets. The PCA algorithm was used to get the initial matching, the ICP algorithm was used to get the matching of the feature points, and then an …

Design Of Micro-Strip Antenna Based On Step-Like Electromagnetic Band-Gap Structure To Improve Bandwidth And Gain, Zhigang Xiao, Jiang Yao, Shaoquan Yin

Journal of System Simulation

Abstract: Design of a micro-strip antenna based on electromagnetic band-gap structure can significantly improve the bandwidth and gain of the antenna. EBG structure is used to suppress the surface wave propagation and increase the radiation gain of the antenna. At the same time, the antenna substrate thickness increase is beneficial to expand the bandwidth of the antenna. According to the actual need, the EBG and the antenna can use diffident substrate. The method can replace the traditional choke ring antenna and significantly reduce the antenna size without sacrificing the performance of the antenna.

Feature Point Positioning And Modeling Approach For Human Body Based On Improved Asm, Xinjuan Zhu, Xiaoya Xiong

Journal of System Simulation

Abstract: Traditional Procrustes normalization needs many iterations which will spend a lot of time. Here training samples alignment was set only after once translation, rotation and scaling operations by marking anchor point and using average body shape as the initialization rules model. Traditional ASM algorithm leads to a long computing time and is easily to make the feature points matching error for gray model’s similarity. It was improved by using every feature points as a center point, training gray model though its rounded rectangular gray distribution, and searching target points within its 24 neighborhood points. Experimental results show …

From Sse To Opencl: Comparison Of Parallel Algorithms For Skeletal Animation On Multi-Core Cpus, Shousheng Liu, Chen Ge, Chunyong Ma, Han Yong

Journal of System Simulation

Abstract: While skeletal animations consist of high fidelity mesh and complex vertex binding, there is a huge performance bottleneck. Previous studies used GPUs to accelerate animation, but the general purpose computing performance of cheap GPUs was lower than high end CPUs. In order to explore the performance for multi-core CPUs to make up the shortfall of cheap GPUs for general purpose computing, the latest parallel scheme based on OpenCL which integrated the former two levels of parallelization was proposed, comparing to the traditional parallel scheme formed by SSE and OpenMP oriented to instruction parallelization and thread parallelization separately. The experimental …

Fractional Order Internal Model Control Of Pmsm Speed Servo System, Zhicheng Zhao, Sang Hai, Jinggang Zhang

Journal of System Simulation

Abstract: A design method of fractional order (FO) internal model controller for permanent magnet synchronous motor (PMSM) speed servo system was proposed. The simplified mathematical model of speed servo system was built. Based on internal model control (IMC) principle, the FO internal model controller was deduced by using the FO filter to replace the integer order one. The proposed controller contained only two adjustable parameters, and the defects of the fractional PI^λD^μ controller tuning method were effectively overcome. Moreover, the dominant pole was selected according to the time domain performance indicators of the system, and an analytical …

Gpu-Accelerated Simulation For Class Of Multi-Agent Based Models, Zhao Yuan, Jiachang Cheng, Wang Lu, Yueming Hu

Journal of System Simulation

Abstract: A parallel agent-based model of Von Thünen Model was proposed driven by graphics processing units (GPUs). The Von Thünen Model often involved the simulation of large numbers of geographically located individual decision-makers and a massive number of individual-level interactions. This simulation required substantial computational power. GPU-enabled computing resources provided a massively parallel processing platform based on a fine-grained shared memory paradigm. This massively parallel processing platform held considerable promise for meeting the computing requirement of agent-based models of spatial problems. A dynamic relationship table rebuilding method was proposed to enable the use of GPUs for parallel agent-based modeling of …

Non-Uniform Axial Force Precise Modeling And Simulation Of Recycled Aggregate Concrete Confined By Steel Tube Column, Wenxian Feng, Yunchao Tang, Zhang Ye, Cai Yang, Dingjing Bao, Jinmu Hu

Journal of System Simulation

Abstract: According to the complexity of non-uniform axial force on recycled aggregate concrete confined by steel tube column, precise modeling and simulation on non-uniform axial force were put forward, mechanic properties of axial force under uniform and non-uniform conditions were analyzed, and its three-dimensional model and force model were established. Then impact of load capacity was analyzed, such as geometric diameter, loading condition, and deformation during production. Force simulation and experimental results fit relatively well. It turned out that uniform axial load capacity was greater than concentrated eccentric axial load capacity. Besides, eccentric axial load capacity was related to eccentricity. …

Simulation Of Grid-Connected Solar Micro-Inverter Based On Fuzzy Pi Controller And Feed-Forward Compensation, Weiliang Liu, Changliang Liu, Huichao Zhang, Yongjun Lin, Liangyu Ma

Journal of System Simulation

Abstract: Grid-connected solar micro-inverter is a highly nonlinear and time-varying system, so it is difficult to achieve good control effect using traditional PI controller. Small signal analysis model of micro-inverter was established, grid-connected current control strategy composed of fuzzy PI controller and grid voltage feed-forward was put forward, and the initial parameters of PI controller was optimized using the genetic algorithm. Simulation results show that the control strategy has the virtues of good robustness, small dynamic deviation, and could reduce the harmonic content of grid-connected current.

Simulation On Superframe Transmission Mechanism In Wireless Sensor Networks, Hairong Yan, Yufei Wei, Zhang Yan, Xie Yue, He Kai

Journal of System Simulation

Abstract: At present, studies on real-time performance and reliability of WSN are mostly based on the performance analysis, protocol optimization or mathematical modeling with IEEE 802.15.4 standard MAC Protocol. However, there is no concern about the large impact on the network real-time and reliability caused by duration of the competitive access control phase (CAP) and non-competitive access control stage (CFP) in the IEEE 802.15.4 standard superframe structure. To solve these problems, a MAC layer superframe mechanism simulation algorithm was designed and implemented to simulate the IEEE802.15.4 standard MAC-layer superframe mechanism by establishing a state machine model. This design also built …

Application Of Industrial Red Mud, Shubhajit Bala

Manipal Institute of Technology, Manipal Theses and Dissertations

Red Mud is solid waste, brick red in colour is a by-product of Bayer process of alumina production. About 1 to 1.5 tonne of red mud is produced from production of 1 tonne of alumina. The waste generation is in huge quantity and methods for management of waste is not followed properly. It leads to spreading & leakage of Red Mud in environment. Hence, conversion of red mud to a valuable product was especially important. The main aim was conversion of Red Mud into valuable product. The potential of red mud for various applications like Magnetic Slime, Car batteries & …

"Identification And Characterization Of Genetic Determinants In Bacteria Involved In Froth Formation At Natural Water Bodies", Swathi A

Manipal Institute of Technology, Manipal Theses and Dissertations

Industrialization, modernization, rapid urbanization, and unscientific disposal of inadequately treated sewage and effluent from the various source into surface water bodies has been a major concern leading to water pollution. Frothing of lakes and foam related issues is one such emerging environmental concern in South India. Although several researchers have dealt with the characterization of physical and chemical parameters to understand the mechanism of foam formation, the role of biotic factors has been largely ignored. The main objective of this project is to identify the bacteria present in the froth forming lakes, to identify and characterize the biosurfactant of the …

Cost Effective And Non-Intrusive Occupancy Detection In Residential Building Through Machine Learning Algorithm, Chenli Wang

Engineering Ph.D. Theses

Residential and commercial buildings consume more than 40% of energy and 76% of electricity in the U.S. Buildings also emit more than one-third of U.S. greenhouse gas emissions, which is the largest sector. A significant portion of the energy is wasted by unnecessary operations on heating, ventilation, and air conditioning (HVAC) systems, such as overheating/overcooling or operation without occupants. Wasteful behaviors consume twice the amount of energy compared to energy-conscious behaviors. Many commercial buildings utilize a building management system (BMS) and occupancy sensors to better control and monitor the HVAC and lighting system based on occupancy information. However, the complicated …

Efficacy Of Enzymatically Induced Calcium Carbonate Precipitation In The Retention Of Heavy Metal Ions, Arif Ali Baig Moghal, Mohammed Abdul Lateef, Syed Abu Sayeed Mohammed, Kehinde Lemboye, Bhaskar C. S. Chittoori, Abdullah Almajed

Civil Engineering Faculty Publications and Presentations

This study evaluated the efficacy of enzyme induced calcite precipitation (EICP) in restricting the mobility of heavy metals in soils. EICP is an environmentally friendly method that has wide ranging applications in the sustainable development of civil infrastructure. The study examined the desorption of three heavy metals from treated and untreated soils using ethylene diamine tetra-acetic acid (EDTA) and citric acid (C₆H₈O₇) extractants under harsh conditions. Two natural soils spiked with cadmium (Cd), nickel (Ni), and lead (Pb) were studied in this research. The soils were treated with three types of enzyme solutions (ESs) …

Effects Of Solid Lubricants On Properties Of Al-Si-Sic Composite Powderproduced By Gas Atomization Technique, Haris Rudianto, Sang Sun Yang, Yong Jin Kim, Ivo Dlouhy, Wahyu Caesarendra

Journal of Metals, Materials and Minerals

Al-Si-SiC composites powder was analyzed in this research. The powder was made by gas atomizing process. Powder characterization was done to observe its morphology, particle size distribution and thermal properties. Effects of lubricants were intensively investigated in this research with compositions and pressure variables. It is assumed that higher amount of solid lubricant put into the powder, the lower ejection force needed to take out compacted powder. Finding appropriate solid lubricant is necessary to improve green and sintering properties. EBS (ethylene bis stearamide), aluminum stearate, zinc stearate and paraffin wax were used for investigation. Sintering under ultra high purity nitrogen …

Evaluating The Potential Of Drone Swarms In Nonverbal Hri Communication, Kasper Grispino, Damian Lyons, Truong-Huy Nguyen

Faculty Publications

Human-to-human communications are enriched with affects and emotions, conveyed, and perceived through both verbal and nonverbal communication. It is our thesis that drone swarms can be used to communicate information enriched with effects via nonverbal channels: guiding, generally interacting with, or warning a human audience via their pattern of motions or behavior. And furthermore that this approach has unique advantages such as flexibility and mobility over other forms of user interface. In this paper, we present a user study to understand how human participants perceived and interpreted swarm behaviors of micro-drone Crazyflie quadcopters flying three different flight formations to bridge …

Me-Em 2019-20 Annual Report, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering Annual Reports

Table of Contents

• Element 1
• Element 2
• Element 3
• Element 4
• Enrollment & Degrees
• Graduates
• Department
• Alumni
• Donors

Stacked Convolutional Recurrent Auto-Encoder For Noise Reduction In Eeg, Eoghan Keegan

Dissertations

Electroencephalogram (EEG) can be used to record electrical potentials in the brain by attaching electrodes to the scalp. However, these low amplitude recordings are susceptible to noise which originates from several sources including ocular, pulse and muscle artefacts. Their presence has a severe impact on analysis and diagnoses of brain abnormalities. This research assessed the effectiveness of a stacked convolutional-recurrent auto-encoder (CR-AE) for noise reduction of EEG signal. Performance was evaluated using the signal-to-noise ratio (SNR) and peak signal-to-noise ratio (PSNR) in comparison to principal component analysis (PCA), independent component analysis (ICA) and a simple auto-encoder (AE). The Harrell-Davis quantile …

Observation Of Structural, Spectral Characterizations And Correlation Of Physical Parameters On Vo2+ Ions Doped Cadmium Lithium Sodium Borate Glasses, Mekala Avinash, Shaik Johny Basha, Vinukonda Khidhirbrahmendra, Annur Vivekananda Chandrasekhar, Renduchintala Venkata Satya Sri, Nagoji Ravikumar

Journal of Metals, Materials and Minerals

A series of quinary 0.1 mol% VO2+ doped Cadmium Lithium Sodium Borate(CLNB) glass system with varying alkali (Li2O/Na2O) content were prepared by the classical melt quenching technique. The current research was carried out to observe the physical, structural and spectral parameters alter with the variation of alkali content in nonlinear manner. Physical properties such as the oxide ion polarizability (∝ைయష), optical basicity of prepared glass (Λth), Yamashita and Kuroswa's interaction parameter (Α) and the third order nonlinear optical polarizability ((3)) are calculated by compared with altering the alkali mol% and also correlate them with each other. Physical parameters are varying …

Solving Concurrent And Nonconcurrent Coplanar Force Systems: Balancing Theory And Practice In The Technology And Engineering Education Classroom, Andrew J. Hughes, Chris Merrill

Educational Leadership & Technology Faculty Publications

The basic concepts inherent to statics, including unbalanced and balanced forces and instability and stability of physical systems, have traditionally been covered in middle and high school physical science courses (Physical Science as indicated in Next Generation Science Standards). Yet, these concepts are covered using a physical science approach that has minor but significant differences in terminology, structure, and focus when compared with an engineering approach. Since a robust understanding of statics is considered an essential component for most engineering disciplines, Technology and Engineering Education’s (T&EE) implementation of statics with an engineering approach could promote students’ ability to transfer learning …

Tailoring And Remotely Switching Performance Of Ultrafiltration Membranes By Magnetically Responsive Polymer Chains, Anh Vu, Arijit Sengupta, Emily Freeman, Xianghong Qian, Mathias Ulbricht, S. Ranil Wickramasinghe

Chemical Engineering Faculty Publications and Presentations

Magnetically responsive ultrafiltration membranes were prepared by grafting poly(2-hydroxyethyl methacrylate) chains from the outer surface of 100-kDa regenerated cellulose ultrafiltration membranes. Surface-initiated atom transfer radical polymerization was used to graft the polymer chains. Grafting from the internal pore surface was suppressed by using glycerol as a pore-filling solvent during initiator immobilization at varied densities. Glycerol suppresses the initiator attachment to the pore surface. Polymerization times of up to four hours were investigated. Superparamagnetic nanoparticles were covalently attached to the chain end. Membrane performance was determined using bovine serum albumin and dextran as model solutes. Increasing the grafted polymer chain density …

Lstm Forecasts For Smart Home Electricity Usage, Rosemary E. Alden, Huangjie Gong, Cristinel Ababei, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

With increasing of distributed energy resources deployment behind-the-meter and of the power system levels, more attention is being placed on electric load and generation forecasting or prediction for individual residences. While prediction with machine learning based approaches of aggregated power load, at the substation or community levels, has been relatively successful, the problem of prediction of power of individual houses remains a largely open problem. This problem is harder due to the increased variability and uncertainty in user consumption behavior, which make individual residence power traces be more erratic and less predictable. In this paper, we present an investigation of …

A Probabilistic Casualty Model To Include Injury Severity Levels In Seismic Risk Assessment, Weichiang Pang, S. Majdalaweyh, A. Safiey, K. Rokneddin, S. Prabhu, M. Javanbarg, E. Ziaei

Publications

Despite the increasing adoption of Performance-Based Earthquake Engineering (PBEE) in seismic risk assessment and design of buildings, earthquakes resulted in around 1.8 million injuries (three times the number of fatalities) over the past two decades. Several existing PBEE-based methodologies use rudimentary models that may not accurately estimate earthquake-induced casualties. Even when models are suitable for predicting the total number of fatalities and critical injuries, they may fail to adequately differentiate between different levels of injury severity. This paper draws attention to the importance of extending the seismic casualty assessment method by broadening the perspective on injury severity. To this cause, …

Testing Of Two 10-Inch Insertion Propeller Flow Meters, Stuart Styles, Sierra Layous, Jack Evans

BioResource and Agricultural Engineering

With funding from the US Bureau of Reclamation, California – Great Basin Region (Region 10), the Cal Poly Irrigation Training & Research Center (ITRC) conducted flow measurement accuracy testing on two 10-inch insertion (strap-on saddle) McCrometer Water Specialties propeller flow meters. Both meters were new and recently purchased by Westlands Water District. One of the meters is shown in Figure 1. Testing was performed at the ITRC Water Resources Facility (WRF) using the ITRC volumetric tank as the standard flow rate measurement for all tests. The ITRC volumetric tank was calibrated with the NIST¹-traceable ITRC gravimetric tank using …

Testing Of Two 10-Inch Insertion Magnetic Flow Meters, Stuart Styles, Sierra Layous, Jack Evans

BioResource and Agricultural Engineering

With funding from the US Bureau of Reclamation, California – Great Basin Region (Region 10), the Cal Poly Irrigation Training & Research Center (ITRC) conducted flow measurement accuracy testing on two 10-inch insertion (saddle-mount) McCrometer Mc Mag3000 magnetic flow meters. The meters were two of 360 new meters that were purchased by Westlands Water District. One of the meters is shown in Figure 1. Testing was performed at the ITRC Water Resources Facility (WRF) using the ITRC gravimetric (weigh) tank as the standard flow rate measurement for all tests. The ITRC gravimetric tank has a NIST¹-traceable uncertainty of …

Magnetic Flow Meter Testing, Stuart Styles, Sierra Layous, Jack Evans

BioResource and Agricultural Engineering

With funding from the US Bureau of Reclamation, California – Great Basin Region (Region 10) and the California Department of Water Resources (Agreement No. 4600011908), the California Polytechnic State University, San Luis Obispo Irrigation Training & Research Center (ITRC) conducted testing on 4-inch and 10-inch spool-type magnetic flow meters ( also known as mag meters and electromagnetic flow meters) from six manufacturers (12 meters total). The testing was performed to assess the effects of various hydraulic conditions on meter accuracy.

Photovoltaics- And Battery-Based Power Network As Sustainable Source Of Electric Power, Prahaladh Paniyil, Vishwas Powar, Rajendra Singh, Benjamin Hennigan, Pamela Lule, Matthew Allison, John Kimsey, Anthony Carambia, Dhruval Patel, Daniel Carrillo, Zachary Shriber, Truman Bazer, James Farnum, Kushal Jadhav, Dalton Pumputis

Publications

With the rise in the utilization of free fuel energy sources, namely solar and wind, across the globe, it has become necessary to study and implement models of a sustainable power network. This paper focuses on the design of a conceptual power network based on photovoltaics (PV) for power generation and lithium-ion batteries for storage. The power system showcases the various metrics that are involved in a grid-tied PV- and battery-based power network. It also encompasses the various design parameters and sizing considerations to design and conceptualize such a power network. The model focuses on the importance of the conservation …

Investigating Hierarchical Effects Of Adaptive Signal Control System On Crash Severity Using Random-Parameter Ordered Regression Models Incorporating Observed Heterogeneity, Weimin Jin, Mashrur Chowdhury, M. Sabbir Salek, Sakib Mahmud Khan, Patrick Gerard

Publications

No abstract provided.

A Simple, Realistic Walled Phantom For Intravascular And Intracardiac Applications., Hareem Nisar, John Moore, Roberta Piazza, Efthymios Maneas, Elvis C S Chen, Terry M Peters

Robarts Imaging Publications

PURPOSE: This work aims to develop a simple, anatomically and haptically realistic vascular phantom, compatible with intravascular and intracardiac ultrasound. The low-cost, dual-layered phantom bridges the gap between traditional wall-only and wall-less phantoms by showing both the vessel wall and surrounding tissue in ultrasound imaging. This phantom can better assist clinical tool training, testing of intravascular devices, blood flow studies, and validation of algorithms for intravascular and intracardiac surgical systems.

METHODS: Polyvinyl alcohol cryogel (PVA-c) incorporating a scattering agent was used to obtain vessel and tissue-mimicking materials. Our specific design targeted the inferior vena cava and renal bifurcations which were …

Ground Motion Duration Effects On The Seismic Risk Assessment Of Wood Light-Frame Buildings, Weichiang Pang, A. Safiey, S. Majdalaweyh, E. Ziaei, K. Rokneddin, M. Javanbarg

Publications

Wood construction comprises a large portion of building stocks of several countries across the globe with high preparedness for earthquakes including Japan, Canada, and the United States. Built environments of these countries are prone to long-duration ground shakings due largely to the proximity of subduction faulting systems. However, the current seismic design requirements do not adequately emphasize this key feature of ground motions. This study evaluates the impact of long-duration ground motions on seismic risk characteristics of code-conforming wood lightframe buildings. To this end, a study matrix of wood light-frame buildings is developed incorporating with two different heights (i.e., 1-story …