Investigating Creep in Corrugated Packaging

In this study, the inverse relationship between lifetime and secondary creep rate was verified suggesting that shorter duration tests can be used to evaluate lifetimes. Also, the variability in creep rate was significantly lower than previous studies suggesting that using enhanced testing facilities...

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Bibliographic Details
Published in:Packaging technology & science 2017-12, Vol.30 (12), p.757-770
Main Authors: Hussain, Sadakat, Coffin, Douglas W., Todoroki, Christine
Format: Article
Language:English
Subjects:
Creep rate
Cyclic loads
High temperature
Humidity
Metals creep
Moisture
Test facilities
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Summary:In this study, the inverse relationship between lifetime and secondary creep rate was verified suggesting that shorter duration tests can be used to evaluate lifetimes. Also, the variability in creep rate was significantly lower than previous studies suggesting that using enhanced testing facilities could reduce required number of repetitions. A novel finding was an observed transition point in applied loading level where cyclic humidity conditions had the highest creep rates at low loads and constant high humidity conditions had the highest creep rate at high loads. Finally, it was determined that a standard moisture cycling history for a standard test protocol will be difficult to determine and the moisture sorption behaviour of each box type must be accounted for. Copyright © 2017 John Wiley & Sons, Ltd. The inverse relationship between lifetime and secondary creep rate was verified suggesting that shorter duration tests can be used to evaluate lifetimes. Also, an observed transition point in applied loading level was observed where constant humidity creep rates were higher than cyclic humidity creep rates. Finally, it was determined that a standard moisture cycling history for a standard test protocol will be difficult to determine and the moisture sorption behaviour of each box type must be accounted for.
ISSN:0894-3214
1099-1522
DOI:10.1002/pts.2323