SYMPOSIA PAPER Published: 01 January 1986

Flexed-Plate Impact Testing of Polyether Sulphone: Development of a Notched Specimen


In flexed-plate impact tests at room temperature, injection-molded disks of polyether sulphone could not be broken or penetrated by an impactor with an incident energy of 238 J. A central hole 1 mm in diameter was sufficient to embrittle a high proportion of the specimens subjected to the same impact. The failures could be segregated into three classes. A few subsidiary tests on thinned specimens with no hole suggest that in this particular molded form, and under the specific test conditions used, polyether sulphone has a tough-brittle transition within the thickness range of 1.4 to 2.0 mm.

Author Information

Turner, S
Queen Mary College, London, England
Reed, PE
Queen Mary College, London, England
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Developed by Committee: D20
Pages: 262–277
DOI: 10.1520/STP19384S
ISBN-EB: 978-0-8031-4996-0
ISBN-13: 978-0-8031-0937-7