On the homogeneity of a thick layer of mixed granules in optical quality inspection

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientific

48 Downloads (Pure)

Abstract

Optical inspection of a thick layer of granules for foreign particles does not directly reveal their true number and the more so if the layer is not homogenous. This raises questions such as “how do I know if the layer is homogenous?” and “what is the relation between the observable particles and the true number?” In this work a theory is proposed for granules with a minority of flat plates that explains their statistical properties under the homogenous condition. Moreover, it offers a simple test for homogeneity or, vice-versa, a way to calculate the true contents in a thick homogenous layer from surface observations of the number of plates. The theory is tested successfully on a uniform ball batch and on dry and moist 2-8 mm gravel batches. The latter served as scaled labsimulations of a concrete demolition waste stream.
Original languageEnglish
Title of host publicationProceedings SUM2016, 3rd Symposium on Urban Mining and Circular Economy
PublisherCISA Publisher
Pages1-10
Number of pages10
Publication statusPublished - 2016
Event3rd Symposium on Urban Mining and Circular Economy - Old Monastery of St. Augustine, Bergamo, Italy
Duration: 23 May 201625 May 2016
http://urbanmining.it/

Conference

Conference3rd Symposium on Urban Mining and Circular Economy
Abbreviated titleSUM2016
CountryItaly
CityBergamo
Period23/05/1625/05/16
Internet address

Keywords

  • granular materials
  • particle segregation
  • material packing
  • homogenous statistics
  • quality inspection

Fingerprint

Dive into the research topics of 'On the homogeneity of a thick layer of mixed granules in optical quality inspection'. Together they form a unique fingerprint.

Cite this