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Numerical analysis for prototype blade of Horizontal Wind Axis Turbine in ANSYS Static Structural

IOP Conference Series: Materials Science and engineering 2018年第6期444卷

作者： D E Husaru P D Bârsănescu Mechanical Engineering ' Gheorghe Asachi' Technical University of Iaşi Iaşi România Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iaşi Iaşi Romania

In the last decades renewable energy domain has seen a significant development. The wind energy is one of the most important sources of renewable energy. Several research and development directions have been identified to continue installation of the wind turbines: off-shore areas, increased rotor dimensions and installation of small wind turbines. The main objective of this paper is to achieve information about torsional and bending resistance of prototype blade for a three-blade HWAT (Horizontal Wind Axis Turbine). The blade assembly is composed from: a metal hub, a stiffening I-shaped element and blade itself manufactured from composite material. Load condition was created with clamping hub, a concentrated moment on the tip of the blade and a concentred force at 300 mm from tip. Numerical simulations were performed on all three components of the assembly. Results of two cases of numerical simulation are presented for directional deflection on Y axis and equivalent von Mises stress for each component.

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Simulation of an ankle rehabilitation system based on scotch- yoke mechanism

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IOP Conference Series: Materials Science and engineering 2016年第1期147卷

作者： C M Racu (Cazacu) I Doroftei Ghe Plesu I A Doroftei Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania Machine-Tools Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania

Due to injuries that occur on the ankle joint, everyday all around the world, more and more rehabilitation devices have been developed in recent years. The prices for ankle rehabilitation systems are still high, thus we developed a new device that we indented to be low cost and easy to manufacture. A model of an ankle rehabilitation device is presented in this paper. The device has two degrees of freedom, for flexion-extension and inversion-eversion move, and will ensure functionality with minimum dimensions. For the 3D model that we design, the dimensions are taken so that the proposed system will ensure functionality but also have a small dimensions and low mass, considering the physiological dimensions of the foot and lower leg.

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Experimental determination of the Young's modulus for the fingers with application in prehension systems for small cylindrical objects

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IOP Conference Series: Materials Science and engineering 2016年第1期147卷

作者： C Oprişan V Cârlescu A Barnea Gh Prisacaru D N Olaru Gh Plesu Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania Machine-Tools Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania

A new methodology to determine experimentally the Young's modulus of the human fingers has been developed by the authors. The methodology consist in the experimentally variation of the elastic deformation for the finger in contact with a steel cylinder normal loaded from zero to 10 N. The Hertzian model for elastic deformation specific to a point contact between a cylindrical object and the index finger has been used to curve fitting the experimental curve for elastic deformation of the finger in the vicinity of imposed forces from 0.5N to 10 N. Values between 0.07 MPa and 0.2 MPa for Young's modulus of the finger have been obtained, in agreement with the values determined by the other authors using ball finger contacts or finger plane surface contacts.

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Expression of Concern for: Applications of Machine Learning Techniques in Detecting Skin Cancer

Expression of Concern for: Applications of Machine Learning ...

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International Conference on Contemporary Computing and Informatics (IC3I)

作者： Pankaj Kunekar Rounak Vaishnav E. Kalaivani Durgaprasad Gangodkar Chamandeep Kaur Joshuva Arockia Dhanraj Vishwakarma Institute of Technology Pune Department of Medical Oncology Sri Ram Cancer and Super specialty centre Clinical Research Manager Mahatma Gandhi University of medical sciences and technology Jaipur Bannari Amman Institute of Technology Sathyamangalam Tamil Nadu Department of Computer Science & Engineering Graphic Era Deemed to be University Dehradun Uttarakhand India Department of Computer Science & Information Technology Jazan University Saudi Arabia Department of Mechatronics Engineering Centre for Automation & Robotics (ANRO) Hindustan Institute of Technology and Science Padur Chennai India

ISBN: (数字)9798350398267

ISBN: (纸本)9798350398274

The most lethal kind of skin cancer is called malignant melanoma. Accurate diagnosis of skin malignancies are aided by dermoscopy, a non-invasive high-resolution imaging procedure. Melanoma is a very dangerous kind of skin cancer because of how quickly it spreads and how aggressive it is. For this reason, malignant melanoma maintains its place as one of the tumors with the highest rates of growth across the globe. Second-order texture feature data may be obtained by the GLCM (Grey Level Co-occurrence Matrix) technique. The reference pixel and neighboring pixels are considered by GLCM to ensure an accurate calculation. Grayscale pictures have a decent number of levels, which is straightforwardly relative to the number of segments and columns in the frameworks used to characterize the scale. Relative recurrence is addressed by the grid component P I j | Dx, Dy), where I and j are force values and Dx and Dy are pixel distances. In total, the co-occurrence matrix considers 14 different attributes, including energy, efficiency, latency, correlation, homogeneity, and contrast. Convolutional Neural networks (CNN) and Gaussian Filters (GF) classifiers were then used to sort these vectors. Comparisons of the results these classifiers provide are also made.

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Applications of Machine Learning Techniques in Detecting Skin Cancer

Applications of Machine Learning Techniques in Detecting Ski...

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International Conference on Contemporary Computing and Informatics (IC3I)

关键词： Force Medical treatment High-resolution imaging Melanoma Machine learning Gray-scale Skin

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Cost-Effective Communication in UDN in Indoor and Outdoor Environment via Machine Learning

Cost-Effective Communication in UDN in Indoor and Outdoor En...

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Artificial Intelligence and Knowledge Discovery in Concurrent engineering (ICECONF), International Conference on

作者： K Nattar Karman V. Velmurugan Kommisetti Murthy Raju T. Sajana V. Vijayalakshmi JoshuvaArockia Dhanraj Departmeru of Artificial Intelligence and Machine Learning Saveetha School of Engineering Chennai Tamil Nadu India Department of Electronics and Communication Engineering Vel Tech Rangarajan and Dr.Sagunthala R&D Institute of science and Technology Chennai Tamil Nadu India Department of Electronics and Communication Engineering Shri Vishnu Engineering College for Women West Godavari Andhra Pradesh India Department of Artificial Intelligence and Data Science KoneruLakshmaiah Education Foundation Vaddeswaram Andhra Pradesh India Department of Networking and Communications School of Computing SRM Institute of Science and Technology Kattankulathur Tamil Nadu India Department of Mechatronics Engineering Centre for Automation and Robotics (ANRO) Hindustan Institute of Technology and Science Chennai Tamil Nadu India

In general, applications on a densely populated network are slower. When there are no opportunities to interact with the devices on the network, the user is forced to communicate at some cost. Thus, the inconsistency that exists there increases the cost over that dense network. The single way to evaluate prospect usage is to look at that have used in the earlier period. This paper proposes an upgraded approach to upgrading existing services within the Ultra Dense cloud Network (UDN). In this way the cost for the services available there is calculated in advance and a system is developed to manage it effectively. This proposed method clearly shows that the effective cost can be managed by combining high-costservices and low-costservices separately. This will help to manage the various communication processes to achieve high effectiveness in Ultra Dense cloud Network (UDN). The proposed method achieves 93.28% of Cost-effective Data Management.49% of Application log failure, 42 % of system log failure, 98% of network log management, 96% of security log management, 99% cost effective management.

关键词： Costs Mobility models Machine learning Knowledge discovery Scheduling Energy efficiency Concurrent engineering

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Integrated mechatronics design of flexure joint and controller in dual-drive gantry: a constrained H2 optimization approach

Integrated mechatronics design of flexure joint and controll...

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2017 IEEE International Conference on Advanced Intelligent mechatronics, AIM 2017

作者： Ma, Jun Chen, Si-Lu Kamaldin, Nazir Teo, Chek Sing Tay, Arthur Mamun, Abdullah Al Tan, Kok Kiong Department of Electrical and Computer Engineering SIMTech-NUS Joint Lab on Precision Motion Systems National University of Singapore 117582 Singapore Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore Mechatronics Group Singapore Institute of Manufacturing Technology 138634 Singapore Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology Ningbo Institute of Industrial Technology Chinese Academy of Sciences Ningbo Zhejiang315121 China NUS Grad. School for Inte. Sci. and Eng. and Department of Electrical Computer Engineering National University of Singapore 119077 Singapore

ISBN: (纸本)9781509059980

The dual-drive H gantry is widely used in many industrial processes that require high precision Cartesian motion. The conventional rigid-link version suffers breaking down of joints if any de-synchronization between the two carriages occurs. To prevent above potential risk, a novel biaxial gantry with flexure-links is designed to allow a small rotation angle of the cross-Arm. Nevertheless, the chattering of control signals and inappropriate design of the flexure joint will possibly induce resonant modes of the end effector. Thus, in this work, the design requirements in terms of tracking accuracy, biaxial synchronization, and resonant mode suppression are achieved by integrated optimization of the stiffness of flexures and PID controller parameters for a class of point-To-point trajectories with same dynamics but different steps. From here, an H2 optimization with defined constraints is formulated, and an efficient iterative solver is proposed by hybridizing direct computation of constrained projection gradient and line search of optimal steps. Comparative experiments results obtained on the testbed are presented to verify the effectiveness of proposed method. © 2017 IEEE.

关键词： Constrained optimization

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Rowing: the influence of the angle of inclination of the leg support on the force in the paddle

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IOP Conference Series: Materials Science and engineering 2018年第5期444卷

作者： E Budescu Eug. Merticaru M Chirazi Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Iasi Romania Physical Education and Sports Faculty 'Alexandra loan Cuza' University of Iasi Iasi Romania

This study is aiming to emphasize the relation between the force at the paddle and the inclination angle of the support of the leg on the skiff, depending on the anthropometric dimensions of the sportsman. This angle, which is adjustable, makes the reaction force between the support and the leg to be decomposed into two components, namely: a horizontal component equivalent to the force at the paddle and a component along the support which is determining the sliding force between the leg and the support. The reaction force between the leg and the support depends also, on the anthropometric dimensions of the thigh and the shank as well as on the extension angles of the thigh and shank. The whole assembly formed of shank, thigh and the sliding chair on which the sportsman is sitting can be likened to an eccentric crank-piston mechanism. The numerical study emphasized that the increasing angle of inclination of the support produces the increasing of the horizontal component of the reaction force leg-support. On the other side, when the shank and the thigh are in prolongation, the inclination angle of the support has to be around 75 degrees so that the entire sole of the foot to be in contact with the support. Using the relations emphasized in the paper, there can be determined the optimum angle, personalized, for each sportsman.

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Scalable Wind Turbine Blades nondestructive evaluation using different types of sensors

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IOP Conference Series: Materials Science and engineering 2018年第2期444卷

作者： N Iftimie R Steigmann G S Dobrescu N A Danila A Savin P D Barsanescu V Goanta Nondestructive Testing Department National Institute of R&D for Technical Physics Iasi Romania Mechanical Engineering Mechatronics and Robotics Department 'Gheorghe Asachi' Technical University of Iasi Romania

The most important part of wind turbine is the blade that must be tested during fabrication and functioning when can be damaged by moisture absorption, fatigue, wind gusts or lightning strikes. The common defects in turbine blades may be faulty microscopic and mesoscopic appeared in matrix, broken fibers can also appear and develop under moderated loads, or cracks and delaminations due to low energy impacts, etc. The paper propose to present the results obtained from testing and monitoring of a scalable wind turbine blade using different sensors placed on critical location which were determined by finite element method simulation. A comparison between the complementary methods is carried out.

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Design and Experimental Validation of Sealing Assembly for Lunar Regolith Volatile Extraction Heating Furnace

Design and Experimental Validation of Sealing Assembly for L...

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IEEE International Conference on robotics and Biomimetics

作者： Hongan Zhang Junyue Tang Yinchao Wang Zixiao Lu Bo Wang Miaoyan Cao Shengyuan Jiang Mechanical Engineering Yanshan University Qinhuangdao P. R. China State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin P. R. China Mechatronics Institute Shenyang Aerospace University Shenyang P. R. China National Center for Nanoscience and Technlogy Chinese Academy of Science Beijing P. R. China China Academy of Space Technology Beijing P. R. China

A lunar regolith in-situ analysis payload deploying a mass spectrometer is proposed to exactly detect the water ice of the South Pole of the moon for China future lunar exploration missions. In order to realize the goal, an airtight heating furnace for volatile extraction from lunar regolith is desired. In this paper, sealing methods for lunar regolith volatile in heating furnace to future proposed in-situ sampling and analysis of lunar samples were investigated based on power requirements, furnace closing accuracy requirements, dust tolerance and operation in the Lunar environment. Methods implemented include a balanced metal hollow ring seal, a double channel ferrule tab ring radial seal and a spring energized seal. Comparing the performance of sealing methods under the above conditions, a spring energized seal is selected as the heating furnace seal. The materials and structure of the seal are designed based on the rigidity requirements, leakage rate requirements and working environment requirements. In order to test the sealing performance of seals after repeated sealing in high and low temperature environments, a seal leak detection system was designed. The test results indicate that the seal can meet the sealing performance requirements after repeated sealing at various temperatures.

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