FATIGUE CRAZE INITIATION IN POLYCARBONATE - STUDY BY SMALL-ANGLE X-RAY-SCATTERING

Authors
HRISTOV HA YEE AF XIE L GIDLEY DW
Citation
Ha. Hristov et al., FATIGUE CRAZE INITIATION IN POLYCARBONATE - STUDY BY SMALL-ANGLE X-RAY-SCATTERING, Polymer, 35(20), 1994, pp. 4287-4292
Citations number
24
Categorie Soggetti
Polymer Sciences
Journal title
Polymer → ACNP
ISSN journal
00323861
Volume
35
Issue
20
Year of publication
1994
Pages
4287 - 4292
Database
ISI
SICI code
0032-3861(1994)35:20<4287:FCIIP->2.0.ZU;2-M
Abstract
The structural changes that occur during the incubation stage of tensi le fatigue failure of glassy polycarbonate are investigated by means o f small-angle X-ray scattering. The results are interpreted as the for mation of voids, or 'proto-crazes', with initial dimensions of similar to 60nm and 150-200 nm in directions parallel and perpendicular to th e load axis, respectively. These values are in the range expected for a void in a static equilibrium, and practically coincide with the init ial void dimensions measured in glassy polymers stretched under monoto nic loading.