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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Positron annihilation spectroscopy as a probe of microscopic structure and physical aging in polymer

Yu, Minzi January 1992 (has links)
No description available.
2

Studies on structural relaxation of silicate glasses below glass transition temperature / ガラス転移点以下におけるシリケートガラスの構造緩和に関する研究

Hamada, Yuya 25 September 2023 (has links)
京都大学 / 新制・課程博士 / 博士(工学) / 甲第24902号 / 工博第5182号 / 新制||工||1989(附属図書館) / 京都大学大学院工学研究科材料化学専攻 / (主査)教授 三浦 清貴, 教授 田中 勝久, 教授 藤田 晃司 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
3

[en] A NOVEL AND STRAIGHTFORWARD METHODOLOGY TO ANALYZE MATERIALS UNDER CONSTANT-STRUCTURE OSCILLATORY MOTION (SAOS AND QL-LAOS) / [pt] METODOLOGIA SIMPLES E OBJETIVA PARA ANÁLISE DE MATERIAIS NOS REGIMES OSCILATÓRIOS LINEAR (SAOS) E QUASILINEAR (QL-LAOS)

RICARDO TEIXEIRA LEITE 27 December 2017 (has links)
[pt] Nessa pesquisa, desenvolvemos uma nova metodologia para analizar materiais nos regimes oscilatórios linear e quasilinear. Foi mostrado que poucos experimentos reológicos são necessários. Além disso, a análise de dados apresentada é objetiva já apenas processamentos simples são necessários para avaliar as funções materiais. Esse fato contrasta com grande parte das análises de escoamento oscilatório de alta amplitude, tendo em vista que essas metodologias requerem manipulação matemática complexa dos dados. Por fim, a metodologia desenvolvida também apresenta grande evolução com relação às metodologias utilizadas anteriormente para analisar materiais no regime QL-LAOS. / [en] In this research, we developed a novel methodology to analyze materials in the linear and quasilinear oscillatory regimes (constant structure motions). It was shown that very few rheometric experiments are necessary. Furthermore, data analysis presented on this thesis is straightforward as raw data obtained from the rheometer requires simple data processing before being input into the equations that evaluate the material functions. This fact is in contrast with most large amplitude oscillatory shear analysis methods since they aim to analyze structure-changing motions and this requires complex mathematical manipulation of data. At last, both experimental methodology and data analysis presented in this research are much simpler than the previous methodologies used to analyze materials in the QL-LAOS regime.

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