T
Takenobu Sakai
Researcher at Saitama University
Publications - 50
Citations - 229
Takenobu Sakai is an academic researcher from Saitama University. The author has contributed to research in topics: Creep & Viscoelasticity. The author has an hindex of 6, co-authored 49 publications receiving 154 citations. Previous affiliations of Takenobu Sakai include Tokyo Metropolitan University & Keio University.
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Accelerated creep and creep-rupture testing of transverse unidirectional carbon/epoxy lamina based on the stepped isostress method
TL;DR: In this article, the authors investigated the applicability of the stepped isostress method (SSM) to study tensile creep of unidirectional carbon FRP (CFRP) lamina used in rehabilitating prestressed concrete structures.
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Analysis of creep behavior in thermoplastics based on visco-elastic theory
Takenobu Sakai,Satoshi Somiya +1 more
TL;DR: In this article, the effects of the fiber volume fraction on the creep characteristics were investigated using glass fiber-reinforced polycarbonate (GFRPC), and comparison between experimental and estimated data showed that the creep analysis sufficiently predicted the creep behavior.
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Estimating creep deformation of glass-fiber-reinforced polycarbonate
Takenobu Sakai,Satoshi Somiya +1 more
TL;DR: In this paper, the effects of physical aging on creep behavior were evaluated quantitatively on pure resin and with various fiber contents without heat treatment, using the grand master curve of creep compliance and shift factors, which was able to estimate the creep deformation of molded materials under varying conditions and fiber contents.
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Estimating the creep behavior of glass-fiber-reinforced polyamide considering the effects of crystallinity and fiber volume fraction
TL;DR: In this paper, the effects of time, temperature, fiber volume fraction and the relative crystallinity of polyamide and glass fiber-reinforced polyamide (GFRPA) were investigated using the time-temperature superposition principle to estimate viscoelastic behavior under each set of conditions.
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Viscoelasticity of Shape Memory Polymer: Polyurethane series DiARY ®*
TL;DR: In this paper, the authors examined the creep behavior of DiARY, a shape-memory polymer (SMP), and the factors influencing the creep behaviour using the short term method, and confirmed the time-temperature superposition principle.