The objective of this paper is to provide a better understanding of how test temperature and test frequency affect the crack initiation and propagation energies of rotomoulded materials. Trials were carried out on a range of rotomolded linear low density polyethylenes. Instrumented impact tests and dynamic mechanical thermal analysis (DMTA) were carried out on each material at a wide range of temperatures and frequencies. It was found that there is a linear relationship between the crack initiation energy of the samples and the tan δ values at all test conditions. By using this relationship it is possible to predict the crack initiation energy of a polymer part over a wide range of conditions by carrying out a small number of tests.
|Number of pages||5|
|Publication status||Published - 14 Oct 2003|
|Event||61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States|
Duration: 4 May 2003 → 8 May 2003
|Conference||61st Annual Technical Conference ANTEC 2003|
|Period||4/05/03 → 8/05/03|