The measurement and analysis of the velocity and other properties of guided waves are commonly carried out using a variety of techniques. Depending on devices employed in the experiments, the instrumentation limitations must be taken into account in order to ensure the accuracy of the measurements. In this paper, the characteristics of guided waves propagating in a quasi-isotropic composite with an embedded Teflon film, that can simulate the presence of a delamination, are studied. The guided waves are created by means of a piezoelectric transducer bonded to the surface of the laminate and the signals are acquired by a high precision laser Doppler vibrometer. A signal analysis methodology is adopted to estimate the group velocity of the propagating wave packet, first in the undamaged region of laminate and then in the region containing the simulated delamination. The measurement error is discussed and appropriate formulas are presented for uncertainty quantification in the velocity calculation.
Fusion Engineering and Design – Elsevier
Published: Oct 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera