Change search
ReferencesLink to record
Permanent link

Direct link
Model-based characterization of thin layers using pulse-echo ultrasound
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
D-Flow Technology AB.
2008 (English)In: Proceedings of the International Congress on Ultrasonics: Vienna, April 9-13, 2007, Paper ID 1562, Session R17, 2008Conference paper (Refereed)
Abstract [en]

Measurements performed on a thin multilayered structure will imply a received signal waveform consisting of reverberant overlapping echoes. In this paper the multi-layered structure is modeled by a physical model and the Maximum Likelihood Estimator (MLE) is derived for the model parameters. A general recursive expression for the model is given. The model is evaluated using measurements on a thin three-layered structure, where two glass layers are bonded together. We show that measured signal waveforms can be reconstructed using the estimated parameters, and that physical properties can be extracted from the estimated model parameters. Simulations also show that physical parameters can be estimated for thicknesses of the bonding layer down to 50 μm for a wavelength of 200 μm of the ultrasonic pulse.

Place, publisher, year, edition, pages
Research subject
Signal Processing
URN: urn:nbn:se:ltu:diva-32374DOI: 10.3728/ICUltrasonics.2007.Vienna.1562_haegglundLocal ID: 6dcf3340-d0e7-11db-a0b9-000ea68e967bOAI: diva2:1005608
International Congress on Ultrasonics : 09/04/2007 - 12/04/2007
Godkänd; 2007; 20070206 (frehag)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

Open Access in DiVA

fulltext(350 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 350 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Hägglund, FredrikMartinsson, JesperCarlson, Johan
By organisation
Signals and Systems

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

ReferencesLink to record
Permanent link

Direct link