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.

Low bending loss characteristics of hybrid plasmonic waveguide for flexible optical interconnect.

Abstract: The bending loss characteristics of the hybrid plasmonic waveguide are investigated theoretically and experimentally. Simulation results showed that the guided mode is confined mainly into outer high index slab as the bending radius decreases. Thus, the radiation loss due to bending is greatly suppressed. We fabricate flexible hybrid plasmonic waveguide consisted of 5 nm-thick Au stripe and flexible multiple polymer cladding layers. The measured bending loss is lower than 1 dB/180° at a wavelength of 1310 nm for the bending radii down to 2 mm.

A machine for bending of long products and a method to control such a machine

Abstract: A machine is process monitored and controlled for continuous bending of long products to a predetermined radius by using three parallel contact-free distance meters (laser transmitters) and by measuring the distances to the bent surface on the product, by cal­culating the actual bending radius based on the fixed distances between the meters and the measured distances, and controlling the adjustment of the machine in response to the relation between the calculated actual radius and the desired radius. The machine comprises a processor for performing said calculation and controlling the bending device.

Novel bending-resistant design of two-layer low-index trench fiber with parabolic-profile core

Abstract: A novel design, two-layer low-index trench fiber with parabolic-profile core, is proposed and investigated numerically in this paper. Based on scalar FD-BPM algorithm, the excellent performance over other types of structures and great potential in mode area enlargement are demonstrated. The effective mode area of our design (D = 100μm) is approximately 890 μm2. Both the high order mode (HOM) suppression and bending resistance of our design are better than that of Multi-Trench Fiber (MTF). The mode loss ratio and effective mode area are independent on the bending radius. Due to the circular symmetry of our proposed configuration design, the bending property is not varied with the changing of bending directions.

Industry case study: rapid prototype of mountain bike frame section

Abstract: The purpose of this study is to detail a virtual and physical prototyping process to overcome a design constraint in the mountain bike industry. Through a series of techniques, 3D scanning, developing detailed CAD models, then through additive manufacturing processes, a solution was developed. The challenge in the industry is the constant geometrical changes of components; the trend has been that bike cranks are becoming narrower due to biomechanical factors and tyres are becoming wider due to rider preferences and increased grip. This change in geometry results in metal tubes that can no longer be deformed without exceeding the minimum bend radius for the material. As such exceeding the minimum bend radius will induce early performance failure and geometrical (aesthetic) defects. The solution is an additive manufactured part that can be substituted into the process without disrupting the entire conventional build process of a customised bike build.

Suspension load beam for disk drive actuator

Abstract: A suspension load beam for an actuator assembly of a disk drive includes a bend radius portion with a spring rate that is less than 18 Newtons per meter, a first bending mode that is greater than 3,500 Hertz, and a first torsion mode that is greater than 5,300 Hertz. The method of making this suspension load beam includes cutting a sheet of material to form a flat suspension load beam including a bend radius portion, removing material in the bend radius portion from full thickness, inspecting the bend radius portion to determine its thickness, and removing material from the bend radius portion and/or from the main body of the suspension load beam to compromise the performance difference due to thickness variation in bend radius portion.