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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Patent•
22 May 2003
TL;DR: In this article, a fiber-optic cable assembly with a strain relief boot attached to the connector subassembly is described. But the flexible extension does not have a predetermined bend.
Abstract: The present invention relates to a fiber optic cable assembly (100) comprising (a) a connector subassembly comprising a fiber optic (300) cable terminated in a connector, the fiber optic cable having a minimum bend radius; and (b) a strain relief boot attached to the connector subassembly, the strain relief boot comprising a core portion, a flexible extension having a proximal end and a distal end, the proximal end extending from the core portion, and a means (26) for retaining at least a portion of the fiber optic cable which is disposed along the flexible extension. The flexible extension does not have a predetermined bend.
71 citations
Patent•
22 Jan 2015TL;DR: In this article, a glass element having a thickness from 25 μm to 125 μm, a first primary surface, a second primary surface and a compressive stress region extending from the first primary to a first depth, the region defined by a compressed stress σI of at least about 100 MPa at the first surface.
Abstract: A glass element having a thickness from 25 μm to 125 μm, a first primary surface, a second primary surface, and a compressive stress region extending from the first primary surface to a first depth, the region defined by a compressive stress σI of at least about 100 MPa at the first primary surface. Further, the glass element has a stress profile such that it does not fail when it is subject to 200,000 cycles of bending to a target bend radius of from 1 mm to 20 mm, by the parallel plate method. Still further, the glass element has a puncture resistance of greater than about 1.5 kgf when the first primary surface of the glass element is loaded with a tungsten carbide ball having a diameter of 1.5 mm.
69 citations
TL;DR: In this article, a closed-form expression for the bending angle is proposed to better understand the deformation characteristics such as wall thickness variation, cross-section ovalization, bending radius, and asymmetry.
Abstract: Laser bending of tubes is a process in which laser-induced thermal distortion is used to bend tubes without hard tooling or external forces. Mechanisms of the process are examined to better understand the deformation characteristics such as wall thickness variation, cross-section ovalization, bending radius, and asymmetry. Factors important to these characteristics are experimentally and numerically investigated. Temporal and spatial distributions of temperature and stress/strain obtained from experimentally validated simulation models are also used to better understand additional phenomena accompanying the process, and to help devise ways to improve the process such as reducing asymmetry. A closed-form expression for the bending angle is proposed.
69 citations
TL;DR: In this paper, an air trench structure for reduced-size bends in low-index contrast waveguides is proposed to minimize junction loss, and the structures are designed to provide adiabatic mode shaping between low and high index contrast regions, which is achieved by the introduction of cladding tapers.
Abstract: Air trench structures for reduced-size bends in low-index contrast waveguides are proposed. To minimize junction loss, the structures are designed to provide adiabatic mode shaping between low- and high-index contrast regions, which is achieved by the introduction of "cladding tapers." Drastic reduction in effective bend radius is predicted. We present two-dimensional (2-D) finite-difference time-domain/effective index method simulations of bends in representative silica index contrasts. We also argue that substrate loss, while present, can be controlled with such air trenches and reduced to arbitrarily low levels limited only by fabrication capabilities. The required trench depth, given an acceptable substrate loss, is calculated in three dimensions using an approximate equivalent current sheet method and also by a numerical solver for full-vector leaky modes. A simple, compact waveguide T-splitter using air trench bends is presented.
69 citations
TL;DR: In this paper, the effects of air velocity, bend radius and number of repeated impacts were investigated for three commercially available feeds in a 100mm diameter pipeline, and the volume independent 37% Weibull tensile strength was used to normalise the pellet strength.
69 citations