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optical fibers
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Published: 31 October 2011
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Published: 01 November 1995
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005912
EISBN: 978-1-62708-167-2
... Abstract The optical fiber preform is a long cylinder of glass that contains core and cladding glasses. This article describes the relationship between the peak furnace temperature, fiber draw tension, and fiber draw speed. It focuses on temperature requirements such as product viscosity, hot...
Abstract
The optical fiber preform is a long cylinder of glass that contains core and cladding glasses. This article describes the relationship between the peak furnace temperature, fiber draw tension, and fiber draw speed. It focuses on temperature requirements such as product viscosity, hot zone length, temperature profile, and heating cycle to draw the glass. The article provides information on process gases in the draw induction furnace, insulation package for induction heating operations, and furnace design and scalability. It reviews the key factors for the selection of susceptor materials, namely, cost, temperature cycling, and the impact on the product.
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Published: 09 June 2014
Fig. 1 Optical fiber preform with draw down region shown, highlighting the two components of glass in an optical fiber—core and cladding
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Image
Published: 09 June 2014
Fig. 6 Schematic of laminar gas flow around optical fiber preform in a typical induction draw furnace
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Published: 01 November 1995
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003065
EISBN: 978-1-62708-200-6
... gives a detailed account of production, properties and application of fiberglass, optical fibers, glass spheres and ceramic glasses, and describes the forms, classification, compositions and properties of glass/metal and glass-ceramic/metal seals. fiberglass forming glass melting glass spheres...
Abstract
The large majority of the commercially important glasses are processed from a carefully calculated batch of raw materials that is then melted in special furnaces. Providing an introduction to melting practices of glass production, this article focuses on various finishing methods of glass products, including forming, grinding and polishing, and explores the advantages, disadvantages and steps involved in sol-gel process. It also discusses the types, processes and properties of annealed, laminated, and tempered glass, and presents the steps involved in glass decoration. The article gives a detailed account of production, properties and application of fiberglass, optical fibers, glass spheres and ceramic glasses, and describes the forms, classification, compositions and properties of glass/metal and glass-ceramic/metal seals.
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009094
EISBN: 978-1-62708-177-1
... This collection of articles is designed as an instructional reference for preparing fiber-reinforced polymeric-matrix composite materials for examination by optical microscopy and the techniques of optical microscopy used for analysis. It is also meant to be a teaching tool for those who want...
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Published: 01 January 2002
Fig. 10 Fracture surface fiber optic ring lighting. (a) Fiber optic ring light copystand setup. (b) Resulting fiber optic ring light photograph of a fatigue fracture
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Published: 01 January 2002
Fig. 13 Fracture surface fiber optic side lighting. (a) Single-side fiber optic copystand lighting setup. (b) Resulting fiber optic lighting photograph of a fatigue fracture
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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005630
EISBN: 978-1-62708-174-0
... a system of beam-delivery optics. The optical system can be an open system of mirrors or a fiber optic system. Properly designed beam-delivery optics are essential to the quality of the beam acting on the workpiece and to the economics of the manufacturing process. Optics for Beam Delivery The beams...
Abstract
Properly designed beam-delivery optics is essential to quality of the beam acting on the workpiece and to the economics of the manufacturing process. This article describes the design considerations of laser beam delivery optics. It also reviews the manufacturing economics and presents two case studies of typical economic environments found in laser welding applications.
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Published: 01 November 1995
Fig. 24 Comparison of (a) fatigue data and (b) strength data for various optical fiber coatings. Source: Ref 121
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Published: 31 October 2011
Fig. 3 Output profiles for (a) single-mode fiber optic and (b) stepped-index fiber optic. Courtesy of IPG Photonics and Primes
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Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003230
EISBN: 978-1-62708-199-3
... between the viewing end and an objective lens at the distant, or distal, tip of the borescope. Three ways to achieve the optical connection are: A rigid tube with a series of relay lenses A tube (normally flexible, but also rigid) with a bundle of optical fibers A tube (normally flexible...
Abstract
Visual inspection is a nondestructive testing technique that provides a means to detect and examine a variety of surface flaws, such as corrosion, contamination, surface finish, and surface discontinuities. This article discusses the equipment used to aid visual inspection, including borescopes (rigid and flexible), optical sensors, and magnifying systems. The article discusses the special features of borescopes, the factors that influence the choice of a flexible or rigid borescope for use in a specific application, and some of the image sensors used in visual inspection.
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Published: 31 October 2011
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Published: 31 October 2011
Fig. 6 (a) Reflective and (b) transmissive fiber optic focus assemblies with charge-coupled device camera. Courtesy of Laser Mechanisms
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Published: 31 October 2011
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Published: 31 October 2011
Fig. 32 Electrode displacement measured with a fiber-optic sensor during alternating current welding with a heavy expulsion. Source: Ref 6
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in Visual Examination and Photography in Failure Analysis
> Characterization and Failure Analysis of Plastics
Published: 15 May 2022
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in Visual Examination and Photography in Failure Analysis
> Characterization and Failure Analysis of Plastics
Published: 15 May 2022
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