Topic
Bend radius
About: Bend radius is a research topic. Over the lifetime, 3303 publications have been published within this topic receiving 35415 citations. The topic is also known as: minimum bend radius.
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TL;DR: In this paper, the authors studied the tangential bending process and the combined effect of bending and stretching stress on thin (0.7 mm) magnesium alloy (AZ31) sheets when working in warm conditions.
7 citations
TL;DR: In this article, the influence of the bending radius on the measurement of radiation induced attenuation in glass optical fibres is discussed, which is related to the displacement of the mode field towards the cladding when the fibre is bent with a low radius, and to different radiation resistances of the core and cladding glasses.
Abstract: Influence of the bending radius on the measurement of radiation induced attenuation in glass optical fibres is discussed in this paper. Radiation induced attenuation measured in two single-mode fibre types shows discrepancies when coiled around a low bending radius spool: the observed attenuation is lower than expected. A series of dedicated tests reveals that this invalid measurement is related to the displacement of the mode field towards the cladding when the fibre is bent with a low radius, and to the different radiation resistances of the core and cladding glasses. For irradiation tests of optical fibres, the spool radius should therefore be carefully chosen.
7 citations
TL;DR: In this article, a comparative study of postulated cross sections for failure analysis of 90°structurally deformed pipe bends with critical circumferential throughwall cracks was performed, where elliptical and semi-oval cross sections were assumed to determine the collapse loads under in-plane closing bending moment.
7 citations
TL;DR: In this paper, a finite difference mode solver with perfectly matched layers was used to investigate the characteristics of bent large-mode-area photonic crystal fibers, and it was shown that the mode field distributions are deformed and the effective mode area and the width of the guided region are reduced.
Abstract: In this paper, the characteristics of bent large-mode-area photonic crystal fibers are investigated comprehensively by using a finite difference mode solver with perfectly matched layers. Numerical results show that in bent large-mode-area photonic crystal fibers, the mode-field distributions are deformed and the effective mode area and the width of the guided region are reduced. The propagation character of bent photonic crystal fibers is determined by normalized propagation number and normalized bend radius. Meanwhile, the bending loss oscillation is observed and the position of the first loss peak is obtained in bent large-mode-area photonic crystal fibers.
7 citations
Patent•
31 May 2001TL;DR: In this paper, a semiconductor pressure sensor has a recess with a bottom wall acting as a membrane and a corner part between the sidewall and the bottom wall with a bending radius that complies with the formula R/S = 526 − 0.037. (d/S) + a1, when R = bending radius, S = a surface of the membrane and d = a thickness of the membranes and a1 lies in a range of 9.6 x 10 to 16 x 10.
Abstract: A semiconductor pressure sensor has a recess (2) on a semiconductor substrate (1). The recess has a sidewall, a bottom wall acting as a membrane (3) and a corner part (2a) between the sidewall and the bottom wall with a bending radius that complies with the formula R/S = 526 . (d/S) - 0.037 . (d/S) + a1, when R = bending radius, S = a surface of the membrane and d = a thickness of the membrane and a1 lies in a range of 9.6 x 10 to 16 x 10 .
7 citations