Viser treff 176-195 av 202

    • Tailored Iterated Greedy metaheuristic for a scheduling problem in metal 3D printing 

      Ying, Kuo-Ching; Pourhejazy, Pourya; Huang, Ya-Hsuan (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-24)
      This article contributes to the additive manufacturing-based production planning literature by developing a Mixed-Integer Linear Programming (MILP) formulation for the Identical Parallel 3D-Printing Machines Scheduling Problem considering batching, multiple build platforms of restricted sizes, and sequence-independent setup times. Besides, a customized metaheuristic, named the Tailored Iterated ...
    • Technology Modules Providing Solutions for Agile Manufacturing 

      Deniša, Miha; Ude, Aleš; Simonič, Mihael; Kaarlela, Tero; Pitkäaho, Tomi; Pieskä, Sakari; Arents, Janis; Judvaitis, Janis; Ozols, Kaspars; Raj, Levente; Czmerk, András; Dianatfar, Morteza; Latokartano, Jyrki; Schmidt, Patrick Alexander; Mauersberger, Anton; Singer, Adrian; Arnarson, Halldor; Shu, Beibei; Dimosthenopoulos, Dimosthenis; Karagiannis, Panagiotis; Ahonen, Teemu-Pekka; Valjus, Veikko; Lanz, Minna (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-01)
      : In this paper, we address the most pressing challenges faced by the manufacturing sector, particularly the manufacturing of small and medium-sized enterprises (SMEs), where the transition towards high-mix low-volume production and the availability of cost-effective solutions are crucial. To overcome these challenges, this paper presents 14 innovative solutions that can be utilized to support ...
    • Thin Wall Structure by Welding 

      Arumairasa, Hans Ivar (Master thesis; Mastergradsoppgave, 2019-06-28)
      Manufacturing of thin wall structure by wire arc additive manufacturing (WAAM) is on the main application of additive manufacturing. 3D-printing technology has significant advantages over traditional milling and machining techniques or welded analogs. Thin wall structure constitutes an essential and growing proportion of engineering construction, within common areas as in structural aerospace and ...
    • Three-phase separator simulator 

      Myrstad, Mats (Master thesis; Mastergradsoppgave, 2022-05-16)
      In this thesis, the goal is to compare the UIT model in the energy lab to the simulation program Aspen HYSYS. The model in the lab has consist of a three-phase separator tank with a weir, and two-component of water and cooking oil, It was made by two students at UIT in 2018. In this simulation, there will be three different variables to determine the accuracy of the simulation. The flow in and out, ...
    • To Measure Relative Permittivity of Atmospheric Ice Using Frequency Sweep 

      Mughal, Umair Najeeb; Shu, Beibei (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 ...
    • Torque and Axial Loading Physics for Measuring Atmospheric Icing Load and Icing Rate 

      Mughal, Umair Najeeb; Virk, Muhammad Shakeel (Peer reviewed; Journal article; Tidsskriftsartikkel, 2015-01-31)
      Measuring icing load and icing rate are important parameters for an atmospheric icing sensor. A new icing sensor has recently been designed and developed at Narvik University College for measuring atmospheric icing rate, icing load and icing type. Unlike the existing atmospheric icing sensors commercially available in market, which uses the axial loading for measuring icing load and icing rate, this ...
    • Total Productive Maintenance in an Industry 4.0 Framework 

      Noureddine, Rami (Master thesis; Mastergradsoppgave, 2019-06-28)
      Maintenance is a key operation function that is required to improve business performance by avoiding equipment breakdown. In 1971, Total Productive Maintenance (TPM), a lean manufacturing approach, has been developed and widely used as a maintenance strategy to gain a competitive advantage in industry. However, with the advent of new technology and the internet of things, manufacturing process are ...
    • Towards a Concept for Digitalized Yard Logistics—Outlining the Next-Generation Features 

      Strandhagen, Jo Wessel; Semini, Marco Giovanni; Alfnes, Erlend (Chapter; Bokkapittel, 2023-09-14)
      Yards are industrial sites for production and servicing of ships and offshore maritime installations, such as oil and gas platforms and modules, offshore windmills, and fish farms—all essential products in the maritime industry. Although many yards are performing highly complex and technically advanced production, there is still a need to bring the internal logistics of yards to a corresponding level ...
    • Towards automatic configuration and programming of a manufacturing cell 

      Arnarson, Halldor; Al-Sallami, Hussein Mahdi Yaseen; Solvang, Bjørn; Bremdal, Bernt Arild (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-04)
      Manufacturing industries are moving from mass production towards customized production, aiming for highquality products with innovative technologies, low prices, and high reliability. A reconfigurable manufacturing system (RMS) is an attractive approach to facilitate the movement toward such flexible manufacturing systems. However, reconfiguration and programming of RMS are time-consuming and ...
    • Towards automatic generation of image recognition models for industrial robot arms 

      Arnarson, Halldor; Bremdal, Bernt Arild; Hanssen, Magnus Fredheim (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-12)
      As the world moves towards mass customization, there is a need for a manufacturing system that can quickly adapt to market changes. Reconfigurable manufacturing systems (RMS) have been proposed as a solution. RMS is designed to be modular with a high degree of flexibility. However, such a structure creates a lot of complexity. For instance, if the modules are moved or changed, the robot arms in the ...
    • Towards smart layout design for a reconfigurable manufacturing system 

      Arnarson, Halldor; Yu, Hao; Olavsbråten, Morten Monland; Bremdal, Bernt Arild; Solvang, Bjørn (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-02)
      Global competition and increased variety in products have created challenges for manufacturing companies. One solution to handle the variety in production is to use reconfigurable manufacturing systems (RMS). These are modular systems where machines can be rearranged depending on what is being manufactured. However, implementing a rearrangeable system drastically increases complexity, among which ...
    • Towards the smart and sustainable transformation of Reverse Logistics 4.0: a conceptualization and research agenda 

      Sun, Xu; Yu, Hao; Solvang, Wei Deng (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-16)
      The recent advancement of digitalization and information and communication technology (ICT) has not only shifted the manufacturing paradigm towards the Fourth Industrial Revolution, namely Industry 4.0, but also provided opportunities for a smart logistics transformation. Despite studies have focused on improving the smartness, connectivity, and autonomy of isolated logistics operations with a primary ...
    • A Trade-off Model for Green Supply Chain Design: An Efficiency-versus-Emission Analysis 

      Yu, Hao; Solvang, Wei Deng (Peer reviewed; Chapter; Bokkapittel, 2018-04-09)
      —With the growing concern of climate change and global warming, the reduction on carbon emissions of supply chain activities have been increasingly focused by both academics and corporates in the last two decades. The increased public awareness on sustainability and stricter environmental policies together enforce the companies to rethink their practices in supply chain design and operations in an ...
    • Transformation in manufacturer in the era of "Made in China 2025" 

      Li, Xuancheng (Master thesis; Mastergradsoppgave, 2019-06-07)
      China’s state council has unveiled a ten-year national plan, Made in China 2025, designed to transform China from a manufacturing giant into a world manufacturing power. Of all the projects includes in the “Made in China 2025” plan, intelligent and automated manufacturing is crucial. It is based on concepts i.e., internet of things, cloud computing, and big data. These technologies will be involved ...
    • Transformation towards small-scale intelligent manufacturing system (SIMS). A case study of the workshop at UiT Narvik 

      Chai, Zhiwei (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 ...
    • A Two-Stage Decision-Support Approach for Improving Sustainable Last-Mile Cold Chain Logistics Operations of COVID-19 Vaccines 

      Andol, Eugenia Ama; Yu, Hao (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-21)
      The COVID-19 pandemic has become a global health and humanitarian crisis that catastrophically affects many industries. To control the disease spread and restore normal lives, mass vaccination is considered the most effective way. However, the sustainable last-mile cold chain logistics operations of COVID-19 vaccines is a complex short-term planning problem that faces many practical challenges, ...
    • A Two-Stage Decision-Support System for Floating Debris Collection in Reservoir Areas 

      Gao, Pan; Du, Wangmiao; Yu, Hao; Zhao, Xu (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-14)
      The accumulation of floating debris is one of the main challenges of water conservancy projects, which may pollute the vulnerable ecosystem of the reservoir area and impose significant risks on waterway transportation and dam operations. Due to the dynamicity and uncertainty caused by water flow, the collection of floating debris is much more complicated than on-land waste collection. In this paper, ...
    • Using Deep Learning to Predict the Amount of Chemicals Applied on the Wheel Track for Winter Road Maintenance 

      Hatamzad, Mahshid; Polanco Pinerez, Geanette Cleotilde; Casselgren, Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-30)
      The decade of big data has emerged in recent years, which has led to entering the era of intelligent transportation. One of the main challenges to deploying intelligent transportation is dealing with winter roads in cold climate countries. Different operations can be used to protect the road from ice and snow, such as spreading chemicals (here salt) on the road surface. Using salt for de-icing and ...
    • Using Mutual Charge Scheme to Measure Salinity of Ice 

      Mughal, Umair Najeeb; Nikumbh, Bhushan (Journal article; Peer reviewed; Tidsskriftartikkel, 2015)
      For offshore measurements in Cold Regions, salinity of ice is also a critical parameter (together with many other parameterssuchasicingtype,load,icingrateandmeltingrate)to be identified in order to optimize the performance of anti/de icing systems. Although there are some available sensory solutions in the market to measure real time salinity levels of water, however there are still not many real ...
    • Using Slightly Imbalanced Binary Classification to Predict the Efficiency of Winter Road Maintenance 

      Hatamzad, Mahshid; Polanco Pinerez, Geanette; Cesselgren, Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-30)
      The prediction of efficiency scores for winter road maintenance (WRM) is a challenging and serious issue in countries with cold climates. While effective and efficient WRM is a key contributor to maximizing road transportation safety and minimizing costs and environmental impacts, it has not yet been included in intelligent prediction methods. Therefore, this study aims to design a WRM ...