Kjetil Daae Lohne

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Acoustic beam diffraction phenomena for normal beam incidence to a viscoelastic plate, such as resonance frequency downshift, beam narrowing, and axial signal enhancement near certain leaky Lamb(More)
Transit-time flow meters based on guided ultrasonic wave propagation in the pipe spool have several advantages compared to traditional inline ultrasonic flow metering. The extended interrogation(More)
A measurement system consisting of a piezoelectric transducer and a water-immersed steel plate is studied. A hybrid method, involving finite element modeling combined with an angular spectrum method,(More)
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