Influence of the stress field of a tilt boundary on a Frank-Read source generating dislocations under the action of ultrasound

Autor:	N. A. Tyapunina, V. V. Blagoveshchenskii, A. L. Lomakin
Rok vydání:	1985
Předmět:	Physics Frank-Read Source Field (physics) business.industry General Physics and Astronomy Boundary (topology) Mechanics Stress field Loop (topology) Tilt (optics) Optics Ultrasonic sensor Dislocation business
Zdroj:	Soviet Physics Journal. 28:118-121
ISSN:	1573-9228 0038-5697
DOI:	10.1007/bf00912504
Popis:	The influence of a nonuniform field of internal stresses and the generation of a dislocation loop by a Frank-Read source operating under the action of an alternating load is investigated by computer simulation. It is shown that the field of a tilt boundary affects every stage of development of a dislocation loop until its closure. The influence of the boundary field is determined by the ratio between the length of the source and the space scale of the field nonuniformities. It is established that not only the value of the dynamic yield point but also the form of its dependence on the ultrasonic frequency can vary in an internal stress field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::186e99c06f940bb155bfe271080d3bc1 https://doi.org/10.1007/bf00912504 Zobrazit plný text záznamu Full text from SpringerLink