Search for dissertations about: "Jens Ekengren"

Found 5 swedish dissertations containing the words Jens Ekengren.

2. 1. Estimating inclusion content in high performance steels

   Author : Jens Ekengren; Jens Bergström; Christer Burman; Hans Nordberg; Karlstads universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials Engineering; Materialteknik;

   Abstract : Non-metallic inclusions in steel pose a major problem for the fatigue resistance, especially regarding fatigue at very long lives corresponding to low cyclic stress levels, as well as being detrimental to material toughness and polishability.The largest inclusions are quite rare, which makes conventional detection methods timeconsuming if reliable results are to be obtained. READ MORE

4. 2. Large and rare : An extreme values approach to estimating the distribution of large defects in high-performance steels

   Author : Jens Ekengren; Jens Bergström; Christer Burman; Thomas Svensson; Karlstads universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Non-metallic inclusions; Tool steel; Extreme value statistics; Distribution of defects; Generalized extreme values; Materialteknik; Materials Engineering;

   Abstract : The presence of different types of defects is an important reality for manufacturers and users of engineering materials. Generally, the defects are either considered to be the unwanted products of impurities in the raw materials or to have been introduced during the manufacturing process. READ MORE

5. 3. Some aspects on designing for metal Powder Bed Fusion

   Author : Sebastian Hällgren; Lars Pejryd; Jens Ekengren; Robert Pederson; Örebro universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing; AM; DfAM; lattice; Powder Bed Fusion; Topology optimization; Selective Laser Melting; Electron Beam Melting; Design for manufacturability;

   Abstract : Additive Manufacturing (AM) using the Powder Bed Fusion (PBF) is a relatively new manufacturing method that is capable of creating shapes that was previously practically impossible to manufacture. Many think it will revolutionize how manufacturing will be done in the future. READ MORE

6. 4. More Than a Shadow : Computed Tomography Method Development and Applications Concerning Complex Material Systems

   Author : Anton Jansson; Lars Pejryd; Jens Ekengren; Giovanni Bruno; Örebro universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The complexity of the components fabricated in today's industry is ever increasing. This is partly due to market pressure, but it is also a result from recent progress in fabrication technologies that open up new design possibilities. READ MORE

7. 5. Only a Shadow : Industrial computed tomography investigation, and method development, concerning complex material systems

   Author : Anton Jansson; Lars Pejryd; Jens Ekengren; Peter Hammersberg; Örebro universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computed tomography; Dual-energy; Material investigation; Additive manufacturing; Measurement consistency; Maskinteknik; Mechanical Engineering;

   Abstract : The complexity of components fabricated in today's industry is ever increasing. This increase is partly due to market pressure but it is also a result from progress in fabrication technologies that opens up new possibilities. READ MORE