Sealing Characteristics of Composite Lead-in Wires with Copper Core

Autor:	Junji Sakurai, Toru Kishii, Takao Asai
Rok vydání:	1964
Předmět:	Core (optical fiber) Stress (mechanics) Materials science chemistry Composite number chemistry.chemical_element Composite material Plasticity Seal (mechanical) Copper Elastic modulus Thermal expansion
Zdroj:	Journal of the Ceramic Association, Japan. 72:240-247
ISSN:	1884-2127 0009-0255
Popis:	Following the theory proposed by Dr. Takagi (Toshiba Reviw, 5, 149 (1950)), sealing characteristics were calculated for composite lead-in wires with copper core. The following items were treated in this paper, i.e. thermal expansion of wire, stresses in glass-to-metal cylindrical seal and stress release in seal by viscous flow of glass, and results were shown graphically. Plasticity and compressibility of copper were taken into consideration.Experiments on wires with cores occupying about 1/10 of total cross sectional areas showed that effects of copper core on sealing stresses are rather small compared with theoretical estimations. According to the author's opinion, this may be explained by change or lowering of elastic moduli and yield strength of copper at high temperature or by end effect in seals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c80cb9b0c77b0c5a142feae8bacfaf95 https://doi.org/10.2109/jcersj1950.72.830_240 Zobrazit plný text záznamu