Search for dissertations about: "service life calculations"

Showing result 11 - 15 of 22 swedish dissertations containing the words service life calculations.

  2. 11. Investigation and simulation of tool wear in press hardening

    Author : Liang Deng; Göran Berglund; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : Due to the requirements of higher strength components and lower carbon dioxide emission, press hardening becomes prevalent in the automotive industry. Heating a boron alloyed steel blank to obtain the austensite phase at high temperature and quenching it to martensitic phase enhances the strength of the products and still allows complex shapes. READ MORE

  4. 12. Procurement Contracts, Innovation and Productivity in the Construction Sector : Five Studies

    Author : Lena Borg; Hans Lind; Han-Suck Song; Johan Nyström; Anne Landin; KTH; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Procurement Contracts; Innovation; Productivity; Construction Sector; Incentives; Entreprenadkontrakt; Innovationer; Produktivitet; Byggsektorn; Incitament; Fastigheter och byggande; Real Estate and Construction Management;

    Abstract : With its size, large number of actors, and its impact on everyday life, the construction sector plays an important role in every nation’s economy and in the improvement of the built environment. The recognition of this fact by the sector, in combination with the reputation for being conservative, problematic, having low productivity growth, and low pressure for change leads to a focus on different strategies that can be used to improve of the sector. READ MORE

  5. 13. Towards sustainability with building services systems : – by focusing on material choices, energy use and thermal indoor climates in residential buildings

    Author : Mats Dahlblom; Avdelningen för Installations- och klimatiseringslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; residential apartment buildings; building services systems; energy use; hvac; hydronic heating system; heating control; feedback control loop; indoor temperature measurements; individual metering and billing; indoor temperature variations; thermal comfort; vertical temperature gradient; case study;

    Abstract : For a development to be considered sustainable, social, economic and environmental requirements must be met. The Swedish sustainable development goals, based on Agenda 2030, contain 16 national environmental quality goals. The National Board of Housing, Building and Planning is responsible for achieving the goal "A good built environment". READ MORE

  6. 14. Ventilation and window opening in schools, Experiments and Analysis

    Author : Birgitta Nordquist; Avdelningen för Installations- och klimatiseringslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heat exchanger efficiency; duct design; balancing; disturbance; tracer gas measurements; analytical model; window opening; single-sided ventilation; ventilation; schools; sensitivity analysis; Building construction; Byggnadsteknik;

    Abstract : The objective of this thesis is to study the application of ventilation in schools buildings. A number of studies of the application of different forms of ventilation are presented. The main part of the thesis focuses on window opening in a classroom. Analytical models for calculation of the air change caused by window airing are proposed. READ MORE

  7. 15. Performance of High-temperature Coatings : Oxidation and Interdiffusion

    Author : Xiaoyu Sun; Ru Lin Peng; Johan Moverare; Xin-Hai Li; Lindwall Greta; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coating; diffusion; phase transformation; oxidation;

    Abstract : The use of aluminiferous coatings profoundly improves the service life of superalloys but leads to the microstructural degradation of superalloys and thus the loss of mechanical properties. To solve this trade-off, two strategies were employed in this research. READ MORE