@article {Pieris:2019:1354-2575:132,
title = "Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing",
journal = "Insight - Non-Destructive Testing and Condition Monitoring",
parent_itemid = "infobike://bindt/insight",
publishercode ="bindt",
year = "2019",
volume = "61",
number = "3",
publication date ="2019-03-01T00:00:00",
pages = "132-137",
itemtype = "ARTICLE",
issn = "1354-2575",
url = "https://www.ingentaconnect.com/content/bindt/insight/2019/00000061/00000003/art00004",
doi = "doi:10.1784/insi.2019.61.3.132",
author = "Pieris, D and Patel, R and Dryburgh, P and Hirsch, M and Li, W and Sharples, S D and Smith, R J and Clare, A T and Clark, M",
abstract = "High-integrity engineering applications such as aerospace will not permit the incorporation of components containing any structural defects. The current generation of additive manufacturing (AM) platforms yield components with relatively high levels of defects. The in-line inspection
of components built using AM can provide closed-loop feedback and vary build parameters during fabrication to minimise defects. This article reviews the capability of spatially resolved acoustic spectroscopy (SRAS) to be used as an inspection tool for detecting defects and characterising microstructure
in parts induced by variations in build parameters. The authors first correlated changes to surface acoustic wave velocity and an increase in defects to variations in build laser power, then identified changes to the component microstructure caused by variations in build laser scan strategy.
This was carried out using the detected probe light intensity and the measured surface acoustic velocity.",
}