Cyclic tests on cracked round bars as a quick tool to assess the long term behaviour of thermoplastics and elastomers. (August 2015)

• Record Type: Journal Article
• Authors: Arbeiter, Florian; Schrittesser, Bernd; Frank, Andreas; Berer, Michael; Pinter, Gerald
• Is Part Of: Polymer testing. Volume 45(2015:Aug.)
• Page Start: 83
• Page End: 92
• Publication Date: 2015-08
• Subjects: CRB -- PE -- PP -- PB -- PVC -- PA12 -- POM -- H-NBR -- Fatigue; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2015.05.008
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: The aim of this work is to demonstrate the applicability of the cracked round bar test recently developed for PE-HD to other polymeric materials. The main advantage of this new test method are rather short testing times for PE-HD materials used in long-term applications such as piping. Therefore, this test is of high interest for other polymers used in similar applications. Five thermoplastic materials used for plumbing (PE-HD, PP-B, PB, PVC-U, PA12), a technical polymer (POM) and an elastomeric material (H-NBR) have been tested. Scanning electron microscopy has been applied to investigate fracture surfaces. Results show that the test method seems to be basically applicable to all tested materials. Most materials showed similar fracture behaviour as postulated in literature, despite the high acceleration factor of the cyclic CRB test.