Institutt for industriell teknologi: Nye registreringer
Viser treff 181-200 av 209
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Atmospheric ice accretion on non rotating vertical circular cyliner
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-22)Study of atmospheric ice accretion on a non-rotating vertical circular cylindrical object was carried out at dry and wet ice conditions. Both numerical and experimental techniques were used during this study. 3D numerical study was carried out using computational fluid dynamics based approach, whereas experimental study was carried out at Cryospheric Environmental Simulator ‘CES’ in Shinjo, Japan. ... -
To Measure Relative Permittivity of Atmospheric Ice Using Frequency Sweep
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-31)The use of AD59333 IC for detecting atmospheric ice and atmospheric ice type was evaluated in this article. A prototype circuit was developed and was tested using a frequency sweep from 40 Hz to 20 kHz. The IC was calibrated using 100 kΩ resistor. The real and imaginary components of discrete Fourier transform were recorded at each frequency increment in order calculate the gain factor at each ... -
Development of small-scale intelligent manufacturing system (SIMS). A case study at Stella Polaris AS
(Master thesis; Mastergradsoppgave, 2017-06-14)Manufacturers in the resourceful Northern Peripheral and Arctic (NPA) region are mostly small and medium-sized enterprises (SMEs). Facing challenges primarily caused by the size and location of enterprises, these SMEs are constantly driven to take new measures to survive from the fierce competition against its domestic and international competitors, under the industrial environments of globalization ... -
An improved approach for sustainable outsourcing strategy
(Master thesis; Mastergradsoppgave, 2017-06-14)In the modern business world, the trend that calls for a harmonious coexistence between economic development and the natural environment is growing ever stronger. Under such global context, the sustainability of a company has become more and more emphasized. As a crucial part of the supply chain management, the outsourcing process should as well be able to deal with such concerns under the guidance ... -
Field data processing techniques
(Master thesis; Mastergradsoppgave, 2017-06-14)The problem of global warming raised up interest to renewable energy. To reduce cost of wind energy is challenge. Before building of wind park such conditions like: average wind speed, direction, time for each wind, probability of icing. Also have to be considered amplitude of wind changes and their amount. This thesis presents Nygårdsfjellet wind turbine park data analysing for determining power ... -
Wind resource assessment in cold climate regions
(Master thesis; Mastergradsoppgave, 2017-06-14)Cold regions have good potential for wind energy development, but icing on wind turbines is recognize as a hindrance limiting the wind energy production in ice prone cold regions. This master thesis work is linked with Wind-CoE project of Arctic Technology Research Team and is aimed on better understanding of wind resource assessment in cold regions. Three years (2013-15) field SCADA data from ... -
Transformation towards small-scale intelligent manufacturing system (SIMS). A case study of the workshop at UiT Narvik
(Master thesis; Mastergradsoppgave, 2017-06-14)With the development of increasing globalization of markets, the small and medium-sized enterprises (SMEs) are necessary to improve their innovation ability, and enhance their competitiveness in the global market. This project analyzes the global and region current situation of SMEs, and then provide the conclusion of advantages and challenges of SMEs, especially the sort of small manufacturing ... -
Wireless industrial indoor localization and its application
(Master thesis; Mastergradsoppgave, 2017-06-14)A complete, structural and comprehensive description of indoor localization technology is pre-sented in this paper. It concluded the basic techniques for distance measurement in indoor locali-zation, the basic localize principles, the topologies and algorithms which are often used in indoor localization area. Then how to perform indoor localization with sensors which are available in modern smartphones ... -
Research on optimization of freeform surface operation
(Master thesis; Mastergradsoppgave, 2017-06-14)Nowadays, many manufacturing companies need to face competition both in domestic and international level. Due to this circumstance, manufacturers recognize that one useful method to enhance their competence is reducing the lead-time of manufacturing. There are many researchers focused on minimize the time of actual cutting, tool path optimization and energy consumption optimization etc. However, few ... -
Heavy multi-pass TIG welding
(Master thesis; Mastergradsoppgave, 2017-05-23)This study aims to find the maximum, usable, feed limit at different arc-energies and use the findings in multi-pass welding planning for robotic welding, taking into consideration the high controllability of robot movements. A combined studies using numerical analyses and practical experiments to calculate the feed limits for different arc energies. Each weld where analysed both mathematical, ... -
Welding Certification for Autonomous Robotized Welding
(Chapter; Bokkapittel, 2016-10-23)The increased production of more and more complex products challenges the accuracy of manual welding, and increase the time it takes to program automatic welding systems. The main objective for the article is to explore if current regulations and standards are able to accommodate the shift from automatic welding to autonomous welding systems. To do this, the most current and applicable standards ... -
SMEs challenges and needs in relation to innovation agendas and strategies
(Conference object; Konferansebidrag, 2016-06-21)Regional research project are, as is also regional industry, highly need-based. That is, understanding the stakeholders’ (or customers’) real challenges and related needs is important. This study is based on interviews with SMEs in the Northern parts of Finland, Norway and Sweden, but also on available innovation agendas and strategies for each country. The differences among the companies in those ... -
Multiphysics based Numerical Study of Atmospheric Ice Accretion on a Full Scale Horizontal Axis Wind Turbine Blade
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08)Atmospheric icing on wind turbines have been recognized as a hindrance to the development of the wind power in cold regions, where uncertainty surrounding the effects of icing on energy production may prevent otherwise good wind resources from being utilized. This research paper is focused on to numerically simulate the rate and shape of atmospheric ice accretion on a full-scale horizontal axis ... -
Experimental validation of icing rate using rotational load
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-04-16)Icing load and icing rate are necessary feedback variables for an intelligent anti/de-icing systemtowork effectively in harsh cold environment of high north. These parametersmay be measured by axial loadings or by rotational loadings, as a function of current demand. However the former may not necessarily be dynamic, whereas the later necessarily be rotational. Sufficiently at a fixed rpm, a ... -
Multiphysics Based Design Study of an Atmospheric Icing Sensor
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2016)A design study of an atmospheric icing sensor is presented in this article. The proposed design of the sensor is aimed to detect an atmospheric icing event, to determine ice type as well as to measure icing load, icing rate and melting rate. This sensor is constantly slowly rotating cylinder with four fins which measure atmospheric icing load and icing rate using rotational load measurement technique. ... -
A Goal Programming Approach for Green Supply Chain Network Optimization
(Chapter; Bokkapittel, 2016-10)Green supply chain management has been focused by both academicians and practitioners in recent years due to the increased public awareness on environmental problems and sustainable development. In this paper, a decision aided model for green supply chain network design and optimization is proposed to justify both economic and environmental performance in an optimal fashion. The model is formulated ... -
A general reverse logistics network design model for product reuse and recycling with environmental considerations
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-04-02)Reverse logistics is believed to be one of the most promising solutions for capturing the remaining values from used products and has been extensively focused by both academics and practitioners during the past two decades. Conceptual framework, mathematical programming and computational algorithms have been developed for decision making at strategic, tactical and operational levels of a reverse ... -
Optimization of long-term performance of municipal solid waste management system: A bi-objective mathematical model
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2015)Management of municipal solid waste has becoming an extremely important topic for any urban authorities in recent years due to the rapidly increasing solid waste quantity and potential environmental pollution. In this paper, a bi-objective dynamic linear programming model is developed for decision making and supporting in the long-term operation of municipal solid waste management system. The proposed ... -
A green supply chain network design model for enhancing competitiveness and sustainability of companies in high north arctic regions
(Peer reviewed; Journal article; Tidsskriftsartikkel, 2014)To survive in today's competitive and ever-changing marketplace, companies need not only to engage in their products and/or services, but also to focus on the management of the whole supply chain. Effectively managing and balancing the profitability and interconnection of each player in the supply chain will improve the overall supply chain surplus as well as individual profit. However, it is extremely ... -
An improved multi-objective programming with augmented ε-constraint method for hazardous waste location-routing problem
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05-31)Hazardous waste location-routing problems are of importance due to the potential risk for nearby residents and the environment. In this paper, an improved mathematical formulation is developed based upon a multi-objective mixed integer programming approach. The model aims at assisting decision makers in selecting locations for different facilities including treatment plants, recycling plants and ...