Ultrasonic velocity measurement for the determination of density in polyethylene

DOI	Trouver le DOI : https://doi.org/10.1002/pen.760241713
Auteur	Rechercher : Piché, L.¹
Affiliation	Conseil national de recherches du Canada
Format	Texte, Article
Résumé	An ultrasonic immersion method is presented for the rapid and accurate measurement of longitudinal sound velocity (v) in polyethylene (PE). The method is based solely on the measurement of time delays and can be automated. The samples are the same press‐molded plaques that are prepared for the standard‐density (ρ) determination using a density‐gradient column, Our measurements on a representative group of various types of PE with densities in the range 0.92 to 0.96 g/cm³ show without ambiguity that v is proportional to ρ. The degree of correlation is such that we come to suggest that the acoustic method be used for the characterization of density. We show that the accuracy is good and compares with that of the density‐gradient column and we then conclude on the practical advantages of the ultrasonic method
Date de publication	1984-12-01
Maison d’édition	Wiley
Dans	Polymer Engineering & Science 24, nº 17 : 1354–1358.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	CNRC 23360 NRC-IGM84-403-133
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	7f92673d-7878-4b30-bcd0-cde7dbd9bd99
Enregistrement créé	2019-03-26
Enregistrement modifié	2020-03-13