| DOI | Resolve DOI: https://doi.org/10.1002/pen.760241713 |
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| Author | Search for: Piché, L.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Abstract | 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 |
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| Publication date | 1984-12-01 |
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| Publisher | Wiley |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | CNRC 23360
NRC-IGM84-403-133 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 7f92673d-7878-4b30-bcd0-cde7dbd9bd99 |
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| Record created | 2019-03-26 |
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| Record modified | 2020-03-13 |
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