Sökning: "Design of Experiments DoE"

Visar resultat 16 - 20 av 23 avhandlingar innehållade orden Design of Experiments DoE.

1. 16. Experiments and Capability Analysis in Process Industry

   Författare :Peder Lundkvist; Peter Söderholm; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kvalitetsteknik; Quality Technology and Management;

   Sammanfattning : The existence of variation has been a major problem in industry since the industrial revolution. Hence, many organizations try to find strategies to master and reduce the variation. Statistical analysis, such as process capability analysis and Design of Experiments (DoE), often plays an important role in such a strategy. LÄS MER

3. 17. Rail grinding and its impact on the wear of wheels and rails

   Författare :Jonas Lundmark; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

   Sammanfattning : Rail grinding has been employed since the 1980s in maintaining optimal rail profile as well as in the elimination of surface defects such as corrugations and head-checks. Likewise, the wheel sets also require re- turning to remove surface defects and restore the desired profile. LÄS MER

4. 18. Modelling of Catalytic Monolith Reactors for Exhaust Aftertreatment

   Författare :Magnus Walander; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; diesel oxidation catalyst; effective diffusivity; washcoat; EATS; gravimetric analysis; parameter estimation; synthetic catalyst activity test; Exhaust aftertreatment modelling; scanning electron microscope;

   Sammanfattning : The incomplete combustion of liquid or gaseous fuels in the internal combustion engine inherently produces several toxic emissions that need to be  removed. This is done through a series of catalytic converters, referred to as the exhaust aftertreatment system (EATS), each catalyst with its own purpose. LÄS MER

5. 19. Electron beam melting: Impact of part surface properties on metal fatigue and bone ingrowth

   Författare :Rebecca Klingvall Ek; Lars-Erik Rännar; Mikael Bäckström; Jaan Hong; Ola Harrysson; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing AM ; Electron Beam Melting EBM ; As-built surfaces; Bone Ingrowth; Metall Fatigue; Machined Surfaces; Hirtisation; Hot Isostatic Pressing HIP ;

   Sammanfattning : AbstractThe aim of this thesis is to investigate aspects on how additive manufacturing (AM) contributes to functional bone implants with the use of the electron beam melting (EBM) technology. AM manufactures parts according to computer-aided design, and the EBM technology melts powder using an electron beam, which acts similar to a laser beam. LÄS MER

7. 20. An ALARP Stop-Test Decision for the Worst-Case Timing Characteristics of Safety-Critical Systems

   Författare :Mahnaz Malekzadeh; Sasikumar Punnekat; Iain Bate; Hans Hansson; Karl Meinke; Mälardalens högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer Science; datavetenskap;

   Sammanfattning : Safety-critical systems are those in which failure can lead to loss of people’s lives, or catastrophic damage to the environment. Timeliness is an important requirement in safety-critical systems, which relates to the notion of response time, i.e., the time a system takes to respond to stimuli from the environment. LÄS MER