Sökning: "ultraljud"

Visar resultat 16 - 20 av 95 avhandlingar innehållade ordet ultraljud.

  1. 16. Ultrasonic testing of components produced with additive manufacturing : Towards improved detection and classification of defects

    Författare :Mikael Sahl; Håkan Wirdelius; Erik Lindgren; Oskar Tofeldt; Madis Ratassepp; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Non-Destructive Testing NDT ; Super alloys; Microstructure; Ultrasonic Testing UT ; Productivity Enhancement; Production Technology; Produktionsteknik;

    Sammanfattning : The focus in this work is on the use of ultrasonic testing as a method for inspecting components manufactured through additive manufacturing (AM) processes. The research is rooted in the need for effective non-destructive testingtechniques that can adapt to the unique challenges posed by AM-produced materials, including complex defect geometries and surface conditions. LÄS MER

  3. 17. Aspects on Chronic Venous Disease of the Lower Limb

    Författare :Gudmundur Danielsson; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Kirurgi; ortopedi; traumatologi; Cardiovascular system; Kardiovaskulära systemet; traumatology; orthopaedics; Surgery; duplex ultrasound; foot volumetry; Chronic venous disease; CEAP classification;

    Sammanfattning : Controversies exist regarding both what is required for a proper diagnosis of chronic venous disease (CVD), and what treatment to offer patients. An objective evaluation is mandatory to individualize treatment. LÄS MER

  4. 18. On Bubble Dynamics in Acoustic Cavitation

    Författare :Ali Kadhim Hadi Alhelfi; Värmeöverföring; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Nyligen har mycket uppmärksamhet ägnats åt studier rörande ickelinjära oscillationer av sfäriska gasbubblor i pulserande tryckfält. Denna lic-avhandlning syftar till att utöka kunskapen kring kavitationsfenomenet. LÄS MER

  5. 19. Ultrasonic Fluid and Cell Manipulation

    Författare :Mathias Ohlin; Martin Viklund; Hans Hertz; Peter Glynne-Jones; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3D cell culture; Acoustic streaming; Acoustofluidics; Cell manipulation; High-resolution imaging; Multi-well; Microplate; Natural killer cell; Piezo; Radiation force; Solid tumor; Solubilization; Spheroid; Standing wave; Temperature control; Transducer; Trapping; Ultrasonic; Fysik; Physics; Biological Physics; Biologisk fysik;

    Sammanfattning : During the last decade, ultrasonic manipulation has matured into an important tool with a wide range of applications, from fundamental cell biological research to clinical and industrial implementations. The contactless nature of ultrasound makes it possible to manipulate living cells in a gentle way, e.g. LÄS MER

  7. 20. Study of particle-current-electrocrystallization interactions in electroplating of Ni/SiC coatings

    Författare :Santiago Pinate; Caterina Zanella; Peter Leisner; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite coatings; Nanoparticles; Electrocrystallisation; Microstructure; Surface treatment; Pulse plating; Ultrasound agitation; Kompositbeläggningar; Nanopartiklar; Elektrokristallisering; Mikrostruktur; Ytbehandling; Pulsplätering; Ultraljudsomrörning;

    Sammanfattning : Composite coatings have great potential due to the possibility to combine properties of two different materials in one coating. This way, new surface properties can be tailored and applied to any material's surface. LÄS MER