Sökning: "Nondestructive testing"

Visar resultat 16 - 20 av 34 avhandlingar innehållade orden Nondestructive testing.

1. 16. Radome Diagnostics: utilizing Source Reconstruction based on Surface Integral Representations

   Författare :Kristin Persson; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nondestructive testing; source reconstruction; diagnostics; radome; phase reconstruction; insertion phase delay IPD ; equivalent surface currents;

   Sammanfattning : In this thesis, an inverse source reconstruction method with great potential in radome diagnostics is presented. A radome is a cover that encloses an antenna in order to protect it from environmental influences. LÄS MER

3. 17. Assessment of optical coherence tomography for metrology applications in high-scattering ceramic materials

   Författare :Rong Su; Lars Mattsson; Hjalmer Granberg; KTH; []
   Nyckelord :metrology; optical coherence tomography; alumina ceramics; nondestructive testing; imaging through turbid media; light scattering; image processing; numerical approximation and analysis; Monte Carlo method;

   Sammanfattning : Large-scale and cost-effective manufacturing of ceramic micro devices based on tape stacking requires the development of inspection systems to perform high-resolution in-process quality control of embedded manufactured cavities, metal structures and defects.In this work, alumina ceramic samples are evaluated by optical coherence tomography (OCT) operating at 1. LÄS MER

4. 18. Improved inspection and micrometrology of embedded structures in multi-layered ceramics : Development of optical coherence tomographic methods and tools

   Författare :Rong Su; Lars Mattsson; Peter Ekberg; Jerzy Pluciński; KTH; []
   Nyckelord :Metrology; Optical Coherence Tomography; Ceramics; Embedded Structure; Multilayer; Nondestructive Testing; Optical Inspection; Critical Dimension Measurement; Infrared Imaging; Scattering; Mie Calculation; Image Processing; Monte Carlo Simulation; 测量学， 光学相干断层扫描术，陶瓷，嵌入式结构，多层，无损检测，光学检测，关键尺寸测量，红外成像，散射，Mie计算，图像处理，Monte Carlo模拟; SRA - Production; SRA - Produktion;

   Sammanfattning : Roll-to-roll manufacturing of micro components based on advanced printing, structuring and lamination of ceramic tapes is rapidly progressing. This large-scale and cost-effective manufacturing process of ceramic micro devices is however prone to hide defects within the visually opaque tape stacks. LÄS MER

5. 19. Nondestructive testing and antenna measurements using UWB radar in industrial applications

   Författare :Vipin Choudhary; Magnus Jansson; Daniel Rönnow; Niclas Björsell; Mats Pettersson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Many industries are rapidly substituting the manual test operations and move towards automated operations using modern technologies.Modern technologies such as digital cameras, sonic sensors, infrared sensors, and radar and lidar systems are used for non-destructive testingoperations. LÄS MER

7. 20. Laboratory Seismic Testing of Asphalt Concrete

   Författare :Anders Gudmarsson; Nils Rydén; Björn Birgisson; Hervé Di Bendetto; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Nondestructive laboratory seismic testing to characterize the complex modulus and Poisson’s ratio of asphalt concrete is presented in this thesis. These material properties are directly related to pavement quality and the dynamic Young’s modulus is used in thickness design of pavements. LÄS MER