[comp] Insinööritieteiden korkeakoulu / ENG

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The Aalto ornament studio theory as a design tool : ornament in architecture : research based design studio
(Aalto University, 2011) Woolston, Samuli; Arkkitehtuurin laitos; Insinööritieteiden korkeakoulu
Optimized patterns for digital image correlation
(Aalto University, 2013) Bossuyt, Sven; Energiatekniikan laitos; Department of Energy Technology; Insinööritieteiden korkeakoulu; School of Engineering
This work presents theoretical background on a novel class of strain sensor patterns. A combination of morphological image processing and Fourier analysis is used to characterize gray-scale images, according to specific criteria, and to synthesize patterns that score particularly well on these criteria. The criteria are designed to evaluate, with a single digital image of a pattern, the suitability of a series of images of that pattern for full-field displacement measurements by digital image correlation (DIC). Firstly, morphological operations are used to flag large featureless areas and to remove from consideration features too small to be resolved. Secondly, the autocorrelation peak sharpness radius en the autocorrelation margin are introduced to quantify the sensitivity and robustness, respectively, expected when using these images in DIC algorithms. For simple patterns these characteristics vary in direct proportion to each other, but it is shown how to synthesize a range of patterns with wide autocorrelation margins even though the autocorrelation peaks are sharp. Such patterns are exceptionally well-suited for DIC measurements.
GEONAVPOS: Seminar publications on Geodesy, Navigation and Positioning
(Aalto University, 2013) Andrei, Octavian (editor); Vermeer, Martin (editor); Maankäyttötieteiden laitos; Department of Real Estate, Planning and Geoinformatics; Geoinformatics research group; Insinööritieteiden korkeakoulu; School of Engineering
Modern geodesy may be defined as "the science of precise georeferencing and change monitoring on or above the Earth’s surface". Modern geodesy relies on space technology and integrates complex Earth observation systems and modelling of geospatial data at higher accuracy in order to understand and predict how the solid Earth, atmosphere, and oceans work as a system. Modern geodesy applications include precise determination of position and velocity of points on the surface of the Earth, precise determination of the shape and changes of the Earth’s ocean and land surfaces, or precise mapping of the spatial and temporal features of the gravity field. Navigation and geodesy relate both on positioning (location) information. Although a connecting element, positioning also makes the difference between navigation and geodesy. In navigation, the positioning information is required instantaneously or almost instantaneously with a certain latency (real-time). On the other hand, in traditional geodesy the position information is obtained post-mission after post-processing calculations. Usually, these calculations are carried out under the assumption that the points are fixed or undergo a very slow movement. However, in navigation, the points are variable, therefore time dependent. The Maa-6.3255 Seminar on Geodesy, Navigation and Positioning is offered to both master and doctoral students of Aalto University. The seminar builds on active participation between the theory and practice, using a student-centred approach for teaching. This publication consists of the best 12 student works prepared by the seminar participants (i.e., 24 students) during 2011-2013: (01) Post-glacial rebound: modelling, measurement, significance on society (02) The Current State of GPS Meteorology and Climatology (03) Matlab Application in VLBI Data Analysis (04) Science Network GNSS-verkon tasoitus ja antennikorkeuden ja - tyypinvaikutus koordinaatteihin (05) Koordinaattien laskenta Precise Point Positioning – menetelmällä (06) GOCE User Toolboxin käyttö Itämeren meritopografian visualisoinnissa (07) GNSS – Risks and threats (08) Global Navigation: Introduction to Satellite Based Augmentation System over Indian Region (09) Positioning Techniques of Modern Smartphones (10) Hybrid Positioning with a Smartphone (11) Dexter Industries GPS sensor for Lego Mindstorms NXT (12) GPS Wildlife Tracking
ISWA BEACON : 2nd International Conference on Final Sinks : Sinks a Vital Element of Modern Waste Management : 16-18 May 2013, Espoo, Finland
(Aalto University, 2013) Yhdyskunta- ja ympäristötekniikan laitos; Heiskanen, Jukka; Aalto-yliopiston insinööritieteiden korkeakoulu
Impact of Clothing and Activity Level on Energy Consumption and Thermal Comfort on The Occupants in The Residential Building in Cold climate Region
(IBPSA, 2014) Alam, Sadaf; Konetekniikan laitos; Department of Mechanical Engineering; Insinööritieteiden korkeakoulu; School of Engineering
In this paper, various clothing level and metabolic rates have been simulated andanalyzed to study the impact on the thermal comfort and energy efficiency of thedetached house in cold climate region Finland.The main objective of this paper is to show how much minimum and maximumindoor air temperature can be achieved while fulfilling the target values for thermalconditions selected and defined according to SFS-EN—15251. PMV and PPD havebeen calculated in order to show the satisfaction crieterias.
Proceedings of the Second FAROS Public Workshop, 30th September 2014, Espoo, Finland
(Aalto University, 2014) Pawling, Rachel (editor); Montewka, Jakub (editor); Gonzalez Celis, Jose (editor); Sovelletun mekaniikan laitos; Department of Applied Mechanics; Research Group on Maritime Risk and Safety; Insinööritieteiden korkeakoulu; School of Engineering
FAROS is an EC FP7 funded, three year project to develop an approach to incorporate human factors into Risk-Based Design of ships. The project consortium consists of 12 members including industry, academia and research institutes. The second FAROS Public Workshop was held in Dipoli Congress Centre in Otaniemi, Espoo, Finland, on the 30th of September 2014. The workshop included keynotes from industry, papers on risk models for aspects such as collision and grounding, fire and the human element, descriptions of parametric ship models and the overall approach being adopted in the FAROS project.
Global buckling and post-buckling of web-core sandwich and stiffened panels: sensitivity to general corrosion
(ICTWS 2014, 2014) Jelovica, Jasmin; Romanoff, Jani; Sovelletun mekaniikan laitos; Department of Applied Mechanics; Marine Technology; Insinööritieteiden korkeakoulu; School of Engineering
Corrosion can lead to reduction of structural stiffness and strength. This paper investigates the influence of a reduction in the thickness of the plates as a result of general corrosion on sandwich panel buckling load and onset of plasticity. The results are compared to the stiffened panel of the same in-plane and bending stiffness. Current guidelines for corrosion protection threat these two structures equally. Load-shortening curves are obtained with the finite element method, with the kinematics being represented using two approaches: (1) equivalent single-layer with first-order shear deformation theory, and (2) a three-dimensional model of the actual geometry of the structure, modeled using shell and connector elements. The former is also used to identify the influence of corrosion on the stiffness coefficients and, consequently, the buckling load, also via analytical equation. The decrease of the buckling load is found higher in sandwich panel than in stiffened panel. The reduction is especially high in the case of the diffusion of moisture (water) into the core. The reason for the higher sensitivity of sandwich panel is a larger reduction of transverse shear stiffness opposite to the stiffener direction due to corrosion.
Proceedings of the 3rd Open Source Geospatial Research & Education Symposium OGRS 2014
(Aalto University, 2014) Jolma, Ari (editor); Sarkola, Pekka (editor); Lehto, Lassi (editor); Yhdyskunta- ja ympäristötekniikan laitos; Department of Civil and Environmental Engineering; Insinööritieteiden korkeakoulu; School of Engineering
The third Open Source Geospatial Research & Education Symposium (OGRS) was held in Helsinki, Finland, on 10 to 13 June 2014. The symposium was hosted and organized by the Department of Civil and Environmental Engineering, Aalto University School of Engineering, in partnership with the OGRS Community, on the Espoo campus of Aalto University. These proceedings contain the 20 papers presented at the symposium. OGRS is a meeting dedicated to exchanging ideas in and results from the development and use of open source geospatial software in both research and education. The symposium offers several opportunities for discussing, learning, and presenting results, principles, methods and practices while supporting a primary theme: how to carry out research and educate academic students using, contributing to, and launching open source geospatial initiatives. Participating in open source initiatives can potentially boost innovation as a value creating process requiring joint collaborations between academia, foundations, associations, developer communities and industry. Additionally, open source software can improve the efficiency and impact of university education by introducing open and freely usable tools and research results to students, and encouraging them to get involved in projects. This may eventually lead to new community projects and businesses. The symposium contributes to the validation of the open source model in research and education in geoinformatics.
Exploring the Recurrent Problems in the Last Planner Implementation on Construction Projects
(Institute for Lean Construction Excellence, 2015) Dave, Bhargav; Hämäläinen, Juho-Pekka; Koskela, Lauri; Rakennustekniikan laitos; Department of Civil and Structural Engineering; Insinööritieteiden korkeakoulu; School of Engineering
Traditionally, production control on construction sites has been a challenging area, where the ad-hoc production control methods foster uncertainty - one of the biggest enemies of efficiency and smooth production flow. The Last Planner System® has been one of the most popular lean construction tools that offers a solution to tackle the problems of production management on construction sites. Since its inception almost 20 years ago, construction companies across the world have implemented Last Planner with reported success. However, there have also been reports of challenges in a number of areas whilst implementing the Last Planner. These challenge areas limit the effectiveness of Last Planner if not tackled properly. Some of the biggest challenges appear to be partial implementation of Last Planner; lack of standardised flow of reporting between shorter planning functions such as weekly and daily planning to long range plans (i.e. Phase and Master plans); lack of attention to long range plans; inability to deploy the collaborative aspects and lack of recognition of information systems. In this paper some of these challenges are explored through review of past literature and also through direct observation of Last Planner implementations. The challenges are categorised in two major areas and potential solution candidates are presented.
Striving for Continuous Process Improvement - A Construction Case Study
(Institute for Lean Construction Excellence, 2015) Dave, Bhargav; Appleby, Charlie; Rakennustekniikan laitos; Department of Civil and Structural Engineering; Insinööritieteiden korkeakoulu; School of Engineering
Organisations must constantly monitor, measure, evaluate and improve their processes in order to remain competitive. Construction organisations are no different in this aspect and are increasingly realising the need for process improvement due to external and internal pressures. The construction industry is working towards improving its efficiency by implementing process improvement techniques such as Lean Construction along with information and communication systems. Business processes and information technology are closely associated and better results can be achieved by addressing them in an integrated manner. This paper provides details of a case study where an extensive business process improvement exercise was carried out over a period of five years alongside a major Enterprise Information System implementation. All major organisational units were assessed and its processes were modelled and evaluated with a view to improvement within the lean framework. Finally a continuous process improvement framework was put in place to avoid the risk of stagnation. The lean continuous improvement framework resulted in each organisational unit taking responsibility for their own processes ultimately leading to higher profitability and smoother supply chain processes. The case study also demonstrated that even smaller business units and its processes affected the overall value chain in a major way and the importance to analyse the process interdependencies between organisational units.
Electric City Bus Energy Flow Model and Its Validation by Dynamometer Test
(IEEE, 2015) Halmeaho, Teemu; Rahkola, Pekka; Pellikka, Ari-Pekka; Tammi, Kari; Ruotsalainen, Sami; Koneenrakennustekniikan laitos; Department of Engineering Design and Production; Insinööritieteiden korkeakoulu; School of Engineering
Battery electric city bus model has been created and the simulation results compared against the measured results from the full scale city bus developed for heavy vehicle research. The model utilizes multi-physics modelling approach with multiple-domains from friction-tyre and transmission model toelectrical drive and a simplified battery model. The modelled and measured motor torque, current and voltages in the battery and inverter and the bus speed were compared under a driving cycle based on a local bus line. The simulated results were in good agreement with the experimental measured results; theerror between the simulated and measured energy consumption was 1.4 %. The measured average energy consumption was 0.581 kWh/km while the simulation estimated 0.589 kWh/km.
Materials Science and Technology - Nuclear Materials, Advanced Course - Kon-67.5100 Postgraduate Seminar on Engineering Materials - Seminar papers 8 October, 2015
(Aalto University, 2015) Hänninen, Hannu (editor); Kiesi, Timo (editor); Kiesi, Timo; Lindqvist, Sebastian; Leskelä, Esa; Lindroos, Vesa; Pohja, Rami; Rantanen, Ville; Salenius, Elina; Sarikka, Teemu; Koneenrakennustekniikan laitos; Department of Engineering Design and Production; Engineering Materials; Insinööritieteiden korkeakoulu; School of Engineering
The Engineering materials research group of Department of Engineering Design and Production of Aalto University arranged a postgraduate course on nuclear materials. The course consisted of three day long lecture session given in April 20-22, 2015. Lectures were given by professionals from nuclear power related research institutes (Aalto and VTT), nuclear industry and authority. The course also included a seminar session held October 8, 2015. The seminar session was targeted to postgraduate students, who prepared articles from their field of expertise. This proceeding is the collection of these seminar articles.
Review of the safety engineering techniques for a complex ship system
(ACEE, 2018) Basnet, Sunil; Valdez Banda, Osiris Alejandro; Kujala, Pentti; Konetekniikan laitos; Department of Mechanical Engineering; Marine Technology; Insinööritieteiden korkeakoulu; School of Engineering
Marine industry is leaning towards the autonomous vessels; and advanced technologies are being developed for autonomous operations. However, this rapid technological change has increased the level of complexity in ship systems. As the interactions between components are increasing further and software are getting imbedded into components, the nature of risks in modern systems can be different than in the traditional systems; where the risks were mostly limited to human errors and component failures. However, for identifying risks in modern systems, it is first important to understand the system composition and the behavior of components. Since traditional system-safety engineering techniques, developed for the relatively simpler systems in past, are still dominant in marine industry. These techniques may not be able to cope with the risks due to increasing complexity.This paper reviews and identifies a suitable modelling approach and a risk analysis method for a complex ship system. A modern modeling approach known as Systems-Modeling Language (SysML) and a modern risk analysis method known as Systems-Theoretical Process Analysis (STPA) are reviewed and compared with widely used traditional methods known as the Tree structure method and Fault Tree Analysis. SysML is a graphical modeling language that presents structural composition, component functions, behavior, constraints and requirements of a complex system. STPA is a risk analysis method that aims to identify and mitigate risks in a complex system. The review and comparison results are presented in the paper.The results of this study suggest that the modern methods are more suitable than the traditional methods when the functionality of each method are considered. However, as the modern methods are more detailed, and are focused on the functionality, they are relatively complex and require more resources for the analysis in comparison to the traditional methods. Some viable solutions to improve the drawbacks of SysML and STPA, and possible future research topics are presented.
Towards Net Zero Energy Buildings: building performance optimization, simulation and analysis
(IOP, 2019) Alam, Sadaf; Lahdelma, Risto; Konetekniikan laitos; Department of Mechanical Engineering; Rakennetun ympäristön laitos; Department of Built Environment; Insinööritieteiden korkeakoulu; School of Engineering
The European Union 2020 energy targets seems to be a progressive, however, it still needs to be worked upon. The implementation of Nearly Zero Energy Buildings (nZEBs) as the building target represents one of the biggest challenges to increase energy savings and minimize greenhouse gas emissions. In this paper detached house has been modelled using dynamic simulation tool and the energy efficiency measures, concerning different technologies for envelope systems and technical systems, were set up as parameters in dynamic simulation tool and simulated and analysed. The objective of this paper is to define the heating, cooling, and electricity demand of a residential building in a cold climate region. The façade parameters were optimized for the best possible energy performance, to be used as design guidelines for facades in low and nearly zero energy buildings for architects and engineers. The purpose of the study is to give guidelines of office buildings facade design from the perspective of energy-efficiency and daylighting to architects, engineers, real-estate developers, etc.
International Seminar on 'Towards Sustainable Tomorrows: From Sound Concepts To Sound Practice' - 31st October-1st November 2019 - Abstract Book and Introduction to SAS Network
(Aalto University, 2019) Özdenkçi, Karhan; Moula, Munjur E.; Laukkanen, Timo; Paloposki, Tuomas; Paatero, Jukka; Holmberg, Henrik; Lahdelma, Risto; Konetekniikan laitos; Department of Mechanical Engineering; Social Acceptability Study (SAS) Network; Insinööritieteiden korkeakoulu; School of Engineering
Proceedings of the 4th Baltic Mechatronics Symposium - Tallinn April 25, 2019
(Aalto University, 2019) Kiviluoma, Panu; Kuosmanen, Petri; Otto, Tauno; Konetekniikan laitos; Department of Mechanical Engineering; Insinööritieteiden korkeakoulu; School of Engineering
The Baltic Mechatronics Symposium is annual symposium with the objective to provide a forum for young scientists from Baltic countries to exchange knowledge, experience, results and information in large variety of fields in mechatronics. The symposium was organized in co-operation with Taltech and Aalto University. The venue of the symposium was Nordic Hotel Forum Tallinn.The symposium was organized parallel to the 12th International DAAAM Baltic Conference and 27th International Baltic Conference BALTMATTRIB 2019. The selected papers are published in Proceedings of Estonian Academy of Sciences indexed in ISI Web of Science. The content of the proceedings: 1. Continuous wet spinning of cellulose nanofibrils 2. Development of motor efficiency test setup for direct driven hydraulic actuator 3. Development of pressure former for continuous nanopaper manufacturing 4. Device for tree volume measurements 5. Effect of external load on rotor vibration 6. Granular jamming based gripper for heavy objects 7. Integrated car camera system for monitoring inner cabin and outer traffic 8. Inverted pendulum controlled with CNC control system 9. Multi-material mixer and extruder for 3D printing 10. Object detection and trajectory planning using a LIDAR for an automated overhead crane
Luovien alojen nykytila, näkymät ja kasvupotentiaali - Creve 2.0. - Yrityspalvelut ja yhteistyömallit hankkeen tuloksia ja visioita
(Aalto University, 2020) Talvela, Juhani (toim.); Hyyppä, Hannu (toim.); Ahlavuo, Marika (toim.); Kurkela, Matti (toim.); Rakennetun ympäristön laitos; Department of Built Environment; Insinööritieteiden korkeakoulu; School of Engineering
Proceedings of the 5th Baltic Mechatronics Symposium - Espoo April 17, 2020
(Aalto University, 2020) Kiviluoma, Panu; Kuosmanen, Petri; Otto, Tauno; Konetekniikan laitos; Department of Mechanical Engineering; Insinööritieteiden korkeakoulu; School of Engineering
The Baltic Mechatronics Symposium is annual symposium with the objective to provide a forum for young scientists from Baltic countries to exchange knowledge, experience, results and information in large variety of fields in mechatronics. The symposium was organized in co-operation with Taltech and Aalto University. Due to Coronavirus COVID-19 the symposium was organized as a virtual conference. The content of the proceedings1. Monitoring Cleanliness of Public Transportation with Computer Vision2. Device for Bending and Cutting Coaxial Wires for Cryostat in Quantum Computing3. Inertial Measurement Method and Application for Bowling Performance Metrics4. Mechatronics Escape Room5. Hardware-In-the-Loop Test Setup for Tuning Semi-Active Hydraulic Suspension Systems6. Newtonian Telescope Design for Stand-off Laser Induced Breakdown Spectroscopy7. Simulation and Testing of Temperature Behavior in Flat Type Linear Motor Carrier8. Powder Removal Device for Metal Additive Manufacturing9. Self-Leveling Spreader Beam for Adjusting the Orientation of an Overhead Crane Load
Proceedings of the 3rd International Conference on Modelling and Optimisation of Ship Energy Systems (MOSES2021)
(Aalto University, 2021) Tammi, Kari; Ritari, Antti; Huotari, Janne; Konetekniikan laitos; Department of Mechanical Engineering; Insinööritieteiden korkeakoulu; School of Engineering
Following the successful organisation of the MOSES2019 in Strathclyde, MOSES2021 addresses the modern challenges of comprehensive system design, leveraging existing data and virtualization in the field of the ship energy systems design and operation. Stringent environmental regulations, volatility of fuel prices, alternative fuels, development of emerging technologies, artificial intelligence methods, big data analytics, ship systems autonomy and 4th industrial revolution concepts provide to the ship energy systems designer and operator both challenges and opportunities, which if appropriately addressed will result in step changes in the way the ships energy systems are perceived today. In this respect, MOSES2021 provided an opportunity to bring together scientists and professionals from industry, academia, government departments, private institutions, research institutions, being a forum for the exchange of the most contemporary ideas, techniques, methods and experience in the area of ship energy systems including modelling, optimisation, control, maintenance, safety, autonomy, environmental friendliness and sustainability.
Proceedings of the 6th Baltic Mechatronics Symposium
(Aalto University, 2021) Kiviluoma, Panu; Kuosmanen, Petri; Otto, Tauno; Konetekniikan laitos; Department of Mechanical Engineering; Insinööritieteiden korkeakoulu; School of Engineering
The Baltic Mechatronics Symposium is annual symposium with the objective to provide a forum for young scientists from Baltic countries to exchange knowledge, experience, results and information in large variety of fields in mechatronics. This year the Symposium was organized alongside the Modern Materials and Manufacturing 2021 Conference in Tallinn in co-operation with Taltech and Aalto University. Due to the ongoing COVID-19 situation the symposium was organized as a virtual meeting. The content of the proceedings1. Accurate Dispensing of Liquids with Various Viscosities2. Coupling with Adjustable Stiffness3. Elasto-Magnetic Load Measurement4. Effects of Pressure and Air Flow on Drying Rate of Nano Paper5. Ultra-Wideband Localization for Crane-Robot Cooperation6. Improving Tunnel Mode Efficiency of Combined Azimuth Thruster

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