About: Thermographic detectability of porosity in multi-layered bare and anodized aluminum laser welds

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About: Thermographic detectability of porosity in multi-layered bare and anodized aluminum laser welds Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Thermographic detectability of porosity in multi-layered bare and anodized aluminum laser welds
Creator	Wang, Hongliang Brown, Tyson Mcgovern, Megan Rinker, Teresa
source	Elsevier
abstract	Abstract This study investigates porosity detection by means of thermography in multi-layered laser welded aluminum joints. Samples with varying levels of porosity were created by laser welding bare or anodized aluminum material in multiple layers. For comparison, two Al 1100 top layer materials, one anodized and one bare, were welded in multiple layer configurations onto a 1.6 mm Al substrate. The samples were characterized by electrical measurements, tensile tests, and X-ray computed tomography imaging. Thermography was performed on the entire sample set, where the heat source distribution was used to analyze raw thermal data corresponding to the weld region-of-interest. A maximum peak histogram value of the thermography data was determined and was found to correlate well with the X-ray CT, electrical resistance, and tensile data. Thermography was observed to be more affected by pores close to the surface as confirmed by the porosity cross sections from the CT data. It was seen however, that in areas of many small pores, the overall thermography values indicated lower heat flow than other areas even if the individual pores could not be resolved. Overall it is shown that thermography correlates well with electrical resistance and tensile results, although more studies are needed to evaluate thicker stack-ups due to the limits placed by thermal diffusion.
has issue date	2020-12-31(xsd:dateTime)
bibo:doi	10.1016/j.promfg.2020.05.034
has license	els-covid
sha1sum (hex)	1d40cd5ef5196729bbb4de429ef18451ef14720b
schema:url	https://doi.org/10.1016/j.promfg.2020.05.034
resource representing a document's title	Thermographic detectability of porosity in multi-layered bare and anodized aluminum laser welds
schema:publication	Procedia Manufacturing
resource representing a document's body	covid:1d40cd5ef5196729bbb4de429ef18451ef14720b#body_text
is schema:about of	named entity 'pores' named entity 'layers' named entity 'configurations' named entity 'heat' named entity 'tensile' »more»

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