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Found 5 swedish dissertations matching the above criteria.
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1. Time-domain Reconstruction Methods for Ultrasonic Array Imaging : A Statistical Approach
Abstract : This thesis is concerned with reconstruction techniques for ultrasonic array imaging based on a statistical approach. The reconstruction problem is posed as the estimation of an image consisting of scattering strengths. READ MORE
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2. Ultrasonic Arrays for Sensing and Beamforming of Lamb Waves
Abstract : Non-destructive testing (NDT) techniques are critical to ensure integrity and safety of engineered structures. Structural health monitoring (SHM) is considered as the next step in the field enabling continuous monitoring of structures. READ MORE
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3. Experimental Validation and Applications of a Phased Array Ultrasonic Testing Probe Model
Abstract : New manufacturing technologies are developed to facilitate flexible product designs and production processes. However, the quality of the final products should not be compromised. The assessment of product quality and integrity lies on various inspection methods. READ MORE
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4. Ultrasonic characterization of materials and multiphase flows
Abstract : This thesis deals with three different applications of ultrasound measurement technology. In process industries like the mining industry, the oil and gas industry, and the paper pulp industry, multiphase flows play an important role. READ MORE
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5. Lamb wave evaluation of concrete plates
Abstract : This thesis is about the application of Lamb waves for non-destructive evaluation of plate-like concrete structures under one-sided access test condition using a portable equipment consisting of an accelerometer and impact hammer. With this type of equipment and based on array signal processing, the impact-echo (IE) method can be extended with measurements of surface waves; this extension allows an evaluation with Lamb waves. READ MORE