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Articles 31 - 60 of 304
Full-Text Articles in Engineering
Scheduling Of A Parcel Delivery System Consisting Of An Aerial Drone Interacting With Public Transportation Vehicles, Hailong Huang, Andrey V. Savkin, Chao Huang
Scheduling Of A Parcel Delivery System Consisting Of An Aerial Drone Interacting With Public Transportation Vehicles, Hailong Huang, Andrey V. Savkin, Chao Huang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This paper proposes a novel parcel delivery system which consists of a drone and public transportation vehicles such as trains, trams, etc. This system involves two delivery schemes: drone-direct scheme referring to delivering to a customer by a drone directly and drone–vehicle collaborating scheme referring to delivering a customer based on the collaboration of a drone and public transportation vehicles. The fundamental characteristics including the delivery time, energy consumption and battery recharging are modelled, based on which a time-dependent scheduling problem for a single drone is formulated. It is shown to …
Tunable Strong Photo-Mixing In Weyl Semimetals, Jack Zuber, T Zhao, S Gong, M Hu, R Zhong, C Zhang, S Liu
Tunable Strong Photo-Mixing In Weyl Semimetals, Jack Zuber, T Zhao, S Gong, M Hu, R Zhong, C Zhang, S Liu
Faculty of Engineering and Information Sciences - Papers: Part B
We study both the temperature and band-gap dependence of the first-and third-order intraband conductivities of a Weyl semimetal (WSM) as well as the resultant critical field. By a semiclassical model we further explore how different chemical potentials, cone separations, field geometries, and finite relaxation times affect photoresponse. We determine that the band-gap variation is characterized by the Weyl cone separation and observe significant thermal enhancement of the nonlinear response. Universal behaviors of both the linear and nonlinear response have also been observed under certain conditions. Coupled with experimentally accessible critical field values of 104-105 V m-1, our results give strong …
Capacity Maximized Linear Precoder Design For Spatial-Multiplexing Mimo Vlc Systems, Yanrong Zhai, Hao Chi, Jun Tong, Jiangtao Xi
Capacity Maximized Linear Precoder Design For Spatial-Multiplexing Mimo Vlc Systems, Yanrong Zhai, Hao Chi, Jun Tong, Jiangtao Xi
Faculty of Engineering and Information Sciences - Papers: Part B
© 2013 IEEE. This paper proposes a novel linear precoder design based on the singular value decomposition (SVD) for multi-input multi-output visible light communications (MIMO VLC). We provide an analytical expression on power allocation subject to the function of maximizing the lower bound of capacity according to the optical wireless communication channel model. The expression is rather different from the radio frequency (RF) communications due to the non-negativity of the transmitted signals in VLC. Furthermore, we design an adaptive bit loading scheme for sub-streams with consideration of the tremendous gain difference among subchannels. Performances of the proposed adaptive power and …
Deep Gabor Neural Network For Automatic Detection Of Mine-Like Objects In Sonar Imagery, Hoang Thanh Le, Son Lam Phung, Philip B. Chapple, Abdesselam Bouzerdoum, Christian H. Ritz, Le Chung Tran
Deep Gabor Neural Network For Automatic Detection Of Mine-Like Objects In Sonar Imagery, Hoang Thanh Le, Son Lam Phung, Philip B. Chapple, Abdesselam Bouzerdoum, Christian H. Ritz, Le Chung Tran
Faculty of Engineering and Information Sciences - Papers: Part B
With the advances in sonar imaging technology, sonar imagery has increasingly been used for oceanographic studies in civilian and military applications. High-resolution imaging sonars can be mounted on various survey platforms, typically autonomous underwater vehicles, which provide enhanced speed and improved data quality with long-range support. This paper addresses the automatic detection of mine-like objects using sonar images. The proposed Gabor-based detector is designed as a feature pyramid network with a small number of trainable weights. Our approach combines both semantically weak and strong features to handle mine-like objects at multiple scales effectively. For feature extraction, we introduce a parameterized …
Hydrothermal Synthesis Of Rutile Tio2 Nanorods And Their Decoration With Ceo2 Nanoparticles As Low-Photocatalytic Active Ingredients In Uv Filtering Applications, Alexander Morlando, Jared Mcnamara, Yaser Rehman, Vitor Sencadas, Philip J. Barker, Konstantin K. Konstantinov
Hydrothermal Synthesis Of Rutile Tio2 Nanorods And Their Decoration With Ceo2 Nanoparticles As Low-Photocatalytic Active Ingredients In Uv Filtering Applications, Alexander Morlando, Jared Mcnamara, Yaser Rehman, Vitor Sencadas, Philip J. Barker, Konstantin K. Konstantinov
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020, Springer Science+Business Media, LLC, part of Springer Nature. The use of TiO2 nanoparticles in sunscreen products has raised concern over their oxidative potential and adverse health effects brought about by their propensity to produce free radicals when exposed to UV radiation. In this study, an investigation into industry-scalable methods for synthesizing rutile TiO2 nanorods with controllable morphological characteristics was carried out. The effects of hydrothermal reaction temperature and nitric acid concentration on the crystal phase, composition and morphology were explored to assess the most suitable conditions for reproduction. Optimal reaction conditions for obtaining purely rutile TiO2 nanorods occurred …
Quality Assurance Of Vmat On Flattened And Flattening Filter-Free Accelerators Using A High Spatial Resolution Detector, F Matar, Dean Wilkinson, Jeremy A. Davis, Giordano Biasi, Trent Causer, Iolanda Fuduli, Owen Brace, Nauljun Stansook, Martin G. Carolan, Anatoly B. Rosenfeld, Marco Petasecca
Quality Assurance Of Vmat On Flattened And Flattening Filter-Free Accelerators Using A High Spatial Resolution Detector, F Matar, Dean Wilkinson, Jeremy A. Davis, Giordano Biasi, Trent Causer, Iolanda Fuduli, Owen Brace, Nauljun Stansook, Martin G. Carolan, Anatoly B. Rosenfeld, Marco Petasecca
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine Purpose: This study investigated the use of high spatial resolution solid-state detectors (DUO and Octa) combined with an inclinometer for machine-based quality assurance (QA) of Volumetric Modulated Arc Therapy (VMAT) with flattened and flattening filter-free beams. Method: The proposed system was inserted in the accessory tray of the gantry head of a Varian 21iX Clinac and a Truebeam linear accelerator. Mutual dependence of the dose rate (DR) and gantry speed (GS) was assessed using the standard …
Mri-Linac Beam Profile Measurements Using A Plastic Scintillation Dosimeter., Levi Madden, James Archer, Enbang Li, Urszula Jelen, Bin Dong, Lois C. Holloway, Anatoly B. Rosenfeld
Mri-Linac Beam Profile Measurements Using A Plastic Scintillation Dosimeter., Levi Madden, James Archer, Enbang Li, Urszula Jelen, Bin Dong, Lois C. Holloway, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Associazione Italiana di Fisica Medica Plastic scintillation dosimeters (PSDs) possess many desirable qualities for dosimetry with LINACs. These qualities are expected to make PSDs effective for MRI-LINAC dosimetry, however little research has been conducted investigating their dosimetric performance with MRI-LINACs. In this work, an in-house PSD was used to measure 8 beam profiles with an in-line MRI-LINAC, compared with film measurements. One dimensional global gamma indices (γ) and corresponding γ pass rates were calculated to compare PSD and film profiles for the 1%/1 mm, 2%/2 mm and 3%/3 mm criterion. The mean global pass rates were 85.8%, 97.5% …
Effect Of Geogrid Reinforcement On The Strains At Compressive Zone Of Concrete Pavements, Abbas Sahib Abd-Ali Al-Hedad, Muhammad N. S Hadi
Effect Of Geogrid Reinforcement On The Strains At Compressive Zone Of Concrete Pavements, Abbas Sahib Abd-Ali Al-Hedad, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 fib. International Federation for Structural Concrete The current study investigated the effect of geogrid reinforcement on the fatigue behavior of concrete beam specimens in terms of the development of strains at the compressive zone. The concrete beam specimens having the dimensions of 150 mm × 150 mm × 550 mm were either unreinforced, reinforced with one layer of triaxial geogrid or reinforced with two layers of triaxial geogrid. The strains at the compressive zone of specimens were measured using strain gauges (SGs) fixed at two locations. The SGs of the first location were placed at the top of …
Integration Of An Omnidirectional Self-Powering Component To An Mre Isolator Towards A Smart Passive Isolation System, Jian Yang, Matthew Christie, Shuaishuai Sun, Donghong Ning, Masami Nakano, Zhixiong Li, Haiping Du, Weihua Li
Integration Of An Omnidirectional Self-Powering Component To An Mre Isolator Towards A Smart Passive Isolation System, Jian Yang, Matthew Christie, Shuaishuai Sun, Donghong Ning, Masami Nakano, Zhixiong Li, Haiping Du, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd Base isolator is one of the most adopted and effective means of mitigating unwanted and harmful vibrations to protect buildings and other key civil infrastructure from seismic events. For this reason, the base isolation technology has advanced greatly in recent years, especially the magnetorheological elastomer (MRE) isolator. However, the operation of such an MRE isolator needs external power supply to be activated, which may fail due to the power outage caused by the seismic movement. To this end, this work developed an MRE base isolation system with self-powering capability. This characteristic enables the isolation system self-sufficient …
A Critical Review Of Methods For The Performance Evaluation Of Passive Thermal Retrofits In Residential Buildings, Anneleise Carratt, Georgios Kokogiannakis, Daniel J. Daly
A Critical Review Of Methods For The Performance Evaluation Of Passive Thermal Retrofits In Residential Buildings, Anneleise Carratt, Georgios Kokogiannakis, Daniel J. Daly
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd The existing residential building stock accounts for a substantial portion of worldwide energy consumption and greenhouse emissions. Improvements to the thermal performance of existing buildings is a vital activity to mitigate climate change, and often has additional benefits in the form of improved comfort, health and well-being for occupants. Despite the extensive body of literature in this area, it remains a difficult task to assess the performance of retrofit packages in occupied residential buildings. Experimental methods often fail to isolate the effect of retrofits from the numerous confounding factors, while modelling studies are prone to uncertainties …
Design And Experimental Evaluation Of A New Modular Underactuated Multi-Fingered Robot Hand, Shufeng Tang, Yue Yu, Shuaishuai Sun, Zhixiong Li, Thompson Sarkodie-Gyan, Weihua Li
Design And Experimental Evaluation Of A New Modular Underactuated Multi-Fingered Robot Hand, Shufeng Tang, Yue Yu, Shuaishuai Sun, Zhixiong Li, Thompson Sarkodie-Gyan, Weihua Li
Faculty of Engineering and Information Sciences - Papers: Part B
© IMechE 2020. In this paper, a modular underactuated multi-fingered robot hand is proposed. The robot hand can be freely configured with different number and configuration of modular fingers according to the work needs. Driving motion is achieved by the rigid structure of the screw and the connecting rod. A finger-connecting mechanism is designed on the palm of the robot hand to meet the needs of modular finger’s installation, drive, rotation, and sensor connections. The fingertips are made of hollow rubber to enhance the stability of grasping. Details about the design of the robot hand and analysis of the robot …
Scratch With Double-Tip Tool: Crack Behavior During Simultaneous Double Scratch On Bk7 Glass, Junyuan Feng, Zhenping Wan, Wei Wang, Xiaofang Huang, Xinrui Ding, Zhengyi Jiang
Scratch With Double-Tip Tool: Crack Behavior During Simultaneous Double Scratch On Bk7 Glass, Junyuan Feng, Zhenping Wan, Wei Wang, Xiaofang Huang, Xinrui Ding, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd Over the past decade, successive double-scratch tests have been extensively performed to study the grinding mechanism of brittle materials. However, the grits sometimes interact with the surface simultaneously. In this study, double tips with a tip separation of 0.6–1.8 μm are fabricated by focused ion beam. Subsequently, double-scratch tests on BK7 optical glass are conducted using the double-tip scratch tool with a scratch depth of 200–600 nm. The typical crack system and its evolution mechanism for double-tip scratch are discovered, before being explained using an analytical stress model. The ductile–brittle transition and the material-removal mechanism are …
Effect Of The Second-Phase Particle Precipitation On The Recrystallization Texture Of High-Strength And Fine-Grain Interstitial-Free Steel, H Zhang, R Chen, C Wang, Y Li, H Jia, Zhengyi Jiang
Effect Of The Second-Phase Particle Precipitation On The Recrystallization Texture Of High-Strength And Fine-Grain Interstitial-Free Steel, H Zhang, R Chen, C Wang, Y Li, H Jia, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020, Springer Science+Business Media, LLC, part of Springer Nature. The effect of the second-phase particle precipitation on the recrystallization texture of high-strength and fine-grain interstitial-free steel was studied. It is shown experimentally that the sizes of second-phase particles increase and their number decreases with holding time and annealing temperature. The texture is mainly influenced by the size, number, and distribution of the particles. Finely dispersed second-phase particles are strongly pinned on the grain boundaries, which significantly hinders the development of {111} surface textures. It the pinning force on the grain boundary decreases, the {111) surface texture improves due to …
Novel Water-Based Nanolubricant With Superior Tribological Performance In Hot Steel Rolling, Hui Wu, Fanghui Jia, Zhou Li, Fei Lin, Mingshuai Huo, Shuiquan Huang, Sepidar Sayyar, Sihai Jiao, Han Huang, Zhengyi Jiang
Novel Water-Based Nanolubricant With Superior Tribological Performance In Hot Steel Rolling, Hui Wu, Fanghui Jia, Zhou Li, Fei Lin, Mingshuai Huo, Shuiquan Huang, Sepidar Sayyar, Sihai Jiao, Han Huang, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Understanding The Role Of Water-Based Nanolubricants In Micro Flexible Rolling Of Aluminium, Mingshuai Huo, Hui Wu, Haibo Xie, Jingwei Zhao, Guanqiao Su, Fanghui Jia, Zhou Li, Fei Lin, Shengli Li, Hongmei Zhang, Zhengyi Jiang
Understanding The Role Of Water-Based Nanolubricants In Micro Flexible Rolling Of Aluminium, Mingshuai Huo, Hui Wu, Haibo Xie, Jingwei Zhao, Guanqiao Su, Fanghui Jia, Zhou Li, Fei Lin, Shengli Li, Hongmei Zhang, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd To comprehend the role of water-based nanolubricant in micro flexible rolling, corresponding characterisation with respect to different concentrations of nanolubricants, surface roughness variation subjected to each micro flexible rolling phase and dispersion of nanoparticles (NPs) were studied systematically. The results reveal that increasing NPs get trapped into the surfaces from the thicker zone to the thinner zone. Downward transition zone with favourable deformation features leads to the smoother surface roughness. Nanolubricants can effectively decrease rolling traces due to the beneficial nanolubrication mechanisms. Notably, the maximum reduction for rolling force is around 18% for the case under …
Is Another Huge And Costly Road Project Really Sydney's Best Option Right Now?, Philip G. Laird
Is Another Huge And Costly Road Project Really Sydney's Best Option Right Now?, Philip G. Laird
Faculty of Engineering and Information Sciences - Papers: Part B
The New South Wales government has focused on delivering more motorways and rail links for Sydney, along with main roads in regional NSW, since the Coalition won office in 2011. The biggest of these, WestConnex, is still being built. Plans for yet another major motorway, the Western Harbour Tunnel and Beaches Link, are well advanced.
A Robust Vmat Delivery Solution For Single-Fraction Lung Sabr Utilizing Fff Beams Minimizing Dosimetric Compromise, Alex Burton, Keith Offer, Nicholas G. Hardcastle
A Robust Vmat Delivery Solution For Single-Fraction Lung Sabr Utilizing Fff Beams Minimizing Dosimetric Compromise, Alex Burton, Keith Offer, Nicholas G. Hardcastle
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 The Authors. Journal of Applied Clinical Medical Physics published by Wiley Periodicals, Inc. on behalf of American Association of Physicists in Medicine. Peripheral lung lesions treated with a single fraction of stereotactic ablative body radiotherapy (SABR) utilizing volumetric modulated arc therapy (VMAT) delivery and flattening filter-free (FFF) beams represent a potentially high-risk scenario for clinically significant dose blurring effects due to interplay between the respiratory motion of the lesion and dynamic multi-leaf collimators (MLCs). The aim of this study was to determine an efficient means of developing low-modulation VMAT plans in the Eclipse treatment planning system (v15.5, Varian …
Characterization Of A Plastic Dosimeter Based On Organic Semiconductor Photodiodes And Scintillator, Jessie Posar, Jeremy A. Davis, Owen Brace, Paul J. Sellin, Matthew Griffith, Olivier Dhez, Dean Wilkinson, Michael L. F Lerch, Anatoly B. Rosenfeld, Marco Petasecca
Characterization Of A Plastic Dosimeter Based On Organic Semiconductor Photodiodes And Scintillator, Jessie Posar, Jeremy A. Davis, Owen Brace, Paul J. Sellin, Matthew Griffith, Olivier Dhez, Dean Wilkinson, Michael L. F Lerch, Anatoly B. Rosenfeld, Marco Petasecca
Faculty of Engineering and Information Sciences - Papers: Part B
Background and purpose: Measurement of dose delivery is essential to guarantee the safety of patients undergoing medical radiation imaging or treatment procedures. This study aimed to evaluate the ability of organic semiconductors, coupled with a plastic scintillator, to measure photon dose in clinically relevant conditions, and establish its radiation hardness. Thereby, proving organic devices are capable of being a water-equivalent, mechanically flexible, real-time dosimeter. Materials and methods: The shelf-life of an organic photodiode was analyzed to 40 kGy by comparison of the charge-collection-efficiency of a 520 nm light emitting diode. A non-irradiated and pre-irradiated photodiode was coupled to a plastic …
Mr-Guided Proton Therapy: A Review And A Preview, Aswin Hoffmann, Bradley M. Oborn, Maryam Moteabbed, Susu Yan, Thomas Bortfeld, Antje Knopf, Herman Fuchs, Dietmar Georg, Joao Seco, Maria Spadea, Oliver Jäkel, Christopher Kurz, Katia Parodi
Mr-Guided Proton Therapy: A Review And A Preview, Aswin Hoffmann, Bradley M. Oborn, Maryam Moteabbed, Susu Yan, Thomas Bortfeld, Antje Knopf, Herman Fuchs, Dietmar Georg, Joao Seco, Maria Spadea, Oliver Jäkel, Christopher Kurz, Katia Parodi
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 The Author(s). Background: The targeting accuracy of proton therapy (PT) for moving soft-tissue tumours is expected to greatly improve by real-time magnetic resonance imaging (MRI) guidance. The integration of MRI and PT at the treatment isocenter would offer the opportunity of combining the unparalleled soft-tissue contrast and real-time imaging capabilities of MRI with the most conformal dose distribution and best dose steering capability provided by modern PT. However, hybrid systems for MR-integrated PT (MRiPT) have not been realized so far due to a number of hitherto open technological challenges. In recent years, various research groups have started addressing …
Towards Attention Based Convlstm For Long-Term Travel Time Prediction Of Bus Journey, Jianqing Wu, Qiang Wu, Jun Shen, Chen Cai
Towards Attention Based Convlstm For Long-Term Travel Time Prediction Of Bus Journey, Jianqing Wu, Qiang Wu, Jun Shen, Chen Cai
Faculty of Engineering and Information Sciences - Papers: Part B
Travel time prediction is critical for advanced travelerinformation systems (ATISs), which provides valuable information for enhancing the efficiency and effectiveness of the urban transportation systems. However, in the area of bus trips, existing studies have focused on directly using the structured data to predict travel time for a single bus trip. For state‐of‐the‐art public transportation information systems, a bus journey generally has multiple bus trips. Additionally, due to the lack of study on data fusion, it is even inadequate for the development of underlying intelligent transportation systems. In this paper, we propose a novel framework for a hybrid data‐ driven …
Evolutionary Learner Profile Optimization Using Rare And Negative Association Rules For Micro Open Learning, Geng Sun, Jiayin Lin, Jun Shen, Tingru Cui, Dongming Xu, Huaming Chen
Evolutionary Learner Profile Optimization Using Rare And Negative Association Rules For Micro Open Learning, Geng Sun, Jiayin Lin, Jun Shen, Tingru Cui, Dongming Xu, Huaming Chen
Faculty of Engineering and Information Sciences - Papers: Part B
The actual data availability, readiness and publicity has slowed down the research of making use of computational intelligence to improve the knowledge delivery in an emerging learning mode, namely adaptive micro open learning, which naturally has high demand in quality and quantity of data to be fed. In this study, we contribute a novel approach to tackle the current scarcity of both data and rules in micro open learning, by adopting evolutionary algorithm to produce association rules with both rare and negative associations taken into account. These rules further drive the generation and optimization of learner profiles through refinement and …
Effectiveness Of Internet-Based Electronic Technology Interventions On Breastfeeding Outcomes: Systematic Review, Alaa Almohanna, Khin Than Win, Shahla Meedya
Effectiveness Of Internet-Based Electronic Technology Interventions On Breastfeeding Outcomes: Systematic Review, Alaa Almohanna, Khin Than Win, Shahla Meedya
Faculty of Engineering and Information Sciences - Papers: Part B
©Alaa Ali Almohanna, Khin Than Win, Shahla Meedya. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.05.2020. BACKGROUND: Supporting women to initiate and continue breastfeeding is a global challenge. A range of breastfeeding interventions employing electronic technologies (e-technologies) are being developed, which offer different delivery modes and features over the internet; however, the impact of internet-based e-technologies on breastfeeding outcomes remains unclear. OBJECTIVE: This study aimed to identify the characteristics of current internet-based breastfeeding interventions employing e-technologies and investigate the effects of internet-based e-technologies on breastfeeding outcomes. METHODS: A systematic search was conducted in accordance with the Preferred …
Do Food And Stress Biomarkers Work For Wastewater-Based Epidemiology? A Critical Evaluation, P Choi, D Bowes, J O'Brien, J Li, R Halden, Guangming Jiang, K Thomas, J Mueller
Do Food And Stress Biomarkers Work For Wastewater-Based Epidemiology? A Critical Evaluation, P Choi, D Bowes, J O'Brien, J Li, R Halden, Guangming Jiang, K Thomas, J Mueller
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Dietary characteristics and oxidative stress are closely linked to the wellbeing of individuals. In recent years, various urinary biomarkers of food and oxidative stress have been proposed for use in wastewater-based epidemiology (WBE), in efforts to objectively monitor the food consumed and the oxidative stress experienced by individuals in a wastewater catchment. However, it is not clear whether such biomarkers are suitable for wastewater-based epidemiology. This study presents a suite of 30 urinary food and oxidative stress biomarkers and evaluates their applicability for WBE studies. This includes 22 biomarkers which were not previously considered for WBE studies. Daily …
Thermal Features Vis A Vis Strain Features Of Fracturing Process In Jointed Rock Layer Under Concentrated Load, Haiqing Yang, Bolong Liu, Shivakumar Karekal
Thermal Features Vis A Vis Strain Features Of Fracturing Process In Jointed Rock Layer Under Concentrated Load, Haiqing Yang, Bolong Liu, Shivakumar Karekal
Faculty of Engineering and Information Sciences - Papers: Part B
In case of earthquakes and crustal movement, the concentration of impounding load over a large region of crust can cause disturbances to the stratum. In order to quantitatively investigate crack initiation, propagation and coalescence processes of jointed stratum based on thermal variations caused by concentrated mechanical loading, a series of indention tests were performed on granite specimens. In the experiment, fracture process and resulting infrared radiation fields of specimens were respectively recorded by synchronized digital image correlation system and infrared camera. Then, thermal characteristics of mixed shear-tensile and tensile conical crack were analyzed. Experimental results indicate that the highlighted temperature …
A Practical 3d-Printed Soft Robotic Prosthetic Hand With Multi-Articulating Capabilities, Alireza Mohammadi, Jim Lavranos, Hao Zhou, Rahim Mutlu, Gursel Alici, Ying Tan, Peter Choong, Denny Oetomo
A Practical 3d-Printed Soft Robotic Prosthetic Hand With Multi-Articulating Capabilities, Alireza Mohammadi, Jim Lavranos, Hao Zhou, Rahim Mutlu, Gursel Alici, Ying Tan, Peter Choong, Denny Oetomo
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Mohammadi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Soft robotic hands with monolithic structure have shown great potential to be used as prostheses due to their advantages to yield light weight and compact designs as well as its ease of manufacture. However, existing soft prosthetic hands design were often not geared towards addressing some of the practical requirements highlighted in prosthetics research. The gap between the existing designs and …
Tactile Feedback In Closed-Loop Control Of Myoelectric Hand Grasping: Conveying Information Of Multiple Sensors Simultaneously Via A Single Feedback Channel, Raphael Mayer, Ricardo Garcia-Rosas, Alireza Mohammadi, Ying Tan, Gursel Alici, Peter Choong, Denny Oetomo
Tactile Feedback In Closed-Loop Control Of Myoelectric Hand Grasping: Conveying Information Of Multiple Sensors Simultaneously Via A Single Feedback Channel, Raphael Mayer, Ricardo Garcia-Rosas, Alireza Mohammadi, Ying Tan, Gursel Alici, Peter Choong, Denny Oetomo
Faculty of Engineering and Information Sciences - Papers: Part B
© Copyright © 2020 Mayer, Garcia-Rosas, Mohammadi, Tan, Alici, Choong and Oetomo. The appropriate sensory information feedback is important for the success of an object grasping and manipulation task. In many scenarios, the need arises for multiple feedback information to be conveyed to a prosthetic hand user simultaneously. The multiple sets of information may either (1) directly contribute to the performance of the grasping or object manipulation task, such as the feedback of the grasping force, or (2) simply form additional independent set(s) of information. In this paper, the efficacy of simultaneously conveying two independent sets of sensor information (the …
Pool Boiling Heat Transfer To Cuo-H2o Nanofluid On Finned Surfaces, Zhixiong Li, M Sarafraz, Arash Mazinani, Tasawar Hayat, Hamed Alsulami, Marjan Goodarzi
Pool Boiling Heat Transfer To Cuo-H2o Nanofluid On Finned Surfaces, Zhixiong Li, M Sarafraz, Arash Mazinani, Tasawar Hayat, Hamed Alsulami, Marjan Goodarzi
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd In the present research, the general aim is to understand further the potential effect of the surface shape and geometrical specification of rectangular parallel fins developed on the surface on the heat transfer coefficient, bubble formation, and fouling of the nanoparticles. To achieve this, the boiling thermal performance of the copper oxide nano-suspension (NS) was quantified on the modified surfaces with different geometrical specifications, including the width and height of the fins and space between fins. Results showed that the designed fins reduce the rate of the fouling of the nanoparticles on the boiling surface such …
Non-Fragile Guaranteed-Performance H∞ Leader-Following Consensus Of Lipschitz Nonlinear Multi-Agent Systems With Switching Topologies, Xiangli Jiang, Guihua Xia, Zhiguang Feng, Zhengyi Jiang
Non-Fragile Guaranteed-Performance H∞ Leader-Following Consensus Of Lipschitz Nonlinear Multi-Agent Systems With Switching Topologies, Xiangli Jiang, Guihua Xia, Zhiguang Feng, Zhengyi Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 Elsevier Ltd In this paper, the problem of non-fragile guaranteed-performance H∞ leader-following consensus protocol design for high-order multi-agent systems with Lipschitz nonlinearities and switching topologies is investigated. The communication interactions among all agents are described by a set of switching directed graphs, whose union contains a directed spanning tree rooting at the leader node. By constructing a nonsingular transformation, leader-following consensus of the concerned multi-agent system is transformed into the problem of asymptotic stability analysis for some consensus error systems. Taking into account the existences of exogenous disturbances in practical agent systems and gain perturbations in physical controller …
Vision Based Defects Detection For Keyhole Tig Welding Using Deep Learning With Visual Explanation, Chunyang Xia, Zengxi Stephen Pan, Zhenyu Fei, Shiyu Zhang, Hui Jun Li
Vision Based Defects Detection For Keyhole Tig Welding Using Deep Learning With Visual Explanation, Chunyang Xia, Zengxi Stephen Pan, Zhenyu Fei, Shiyu Zhang, Hui Jun Li
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 The Society of Manufacturing Engineers As an advanced and highly efficient welding method, Keyhole Tungsten Inert Gas (keyhole TIG) welding has drawn wide interests from the manufacturing industry. In order to improve its manufacturing quality and automation level, it's necessary to develop an online monitoring system for the keyhole TIG welding process. This study developed a visual monitoring system, which utilized an HDR welding camera to monitor the welding pool and keyhole during keyhole TIG welding process. A state of the art Convolutional neural network (Resnet) was developed to recognize different welding states, including good weld, incomplete penetration, …
Designing Dendrite-Free Zinc Anodes For Advanced Aqueous Zinc Batteries, Junnan Hao, Xiaolong Li, Shilin Zhang, Fuhua Yang, Xiaohui Zeng, Shuai Zhang, Guyue Bo, Chunsheng Wang, Zaiping Guo
Designing Dendrite-Free Zinc Anodes For Advanced Aqueous Zinc Batteries, Junnan Hao, Xiaolong Li, Shilin Zhang, Fuhua Yang, Xiaohui Zeng, Shuai Zhang, Guyue Bo, Chunsheng Wang, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part B
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Zn metal has been regarded as the most promising anode for aqueous batteries due to its high capacity, low cost, and environmental benignity. Zn anode still suffers, however, from low Coulombic efficiency due to the side reactions and dendrite growth in slightly acidic electrolytes. Here, the Zn plating/stripping mechanism is thoroughly investigated in 1 m ZnSO4 electrolyte, demonstrating that the poor performance of Zn metal in mild electrolyte should be ascribed to the formation of a porous by-product (Zn4SO4(OH)6·xH2O) layer and serious dendrite growth. To suppress the side reactions and dendrite …