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ASM Committee on Threaded Steel Fasteners, Frank W. Akstens, James Gialamas, Edward J. Bueche, T.P. Madvad ...
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bolting
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Image
Published: 01 January 2006
Fig. 20 K Iscc limits for support bolting as a function of yield stress. Source: Ref 103
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Image
Published: 01 January 2000
Fig. 5 Repeatability among fifteen laboratories for relaxation of Cr-Mo-V bolting steel from 0.2% strain at 500 °C
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Book: Composites
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003384
EISBN: 978-1-62708-195-5
... stronger multirow joints bolted joints bonded joints stepped-lap joints stress concentration factor THE STRUCTURAL EFFICIENCY of a composite structure is established, with very few exceptions, by its joints, not by its basic structure. Joints can be manufacturing splices planned at predetermined...
Abstract
This article provides a discussion on adhesively bonded joints and elastic-plastic mathematical model for an adhesive in shear. It discusses the design rules for thin bonded structures and reviews computer programs for the highly loaded stepped-lap joints. The article describes the two-dimensional effects associated with load redistribution around flaws and with damage tolerance. The elastic-isotropic geometric stress-concentration factors and empirically established correlation factors of mechanically fastened joints are discussed. The article provides information on the identification of optimal joint proportions for single-row joints, and the design and analysis of the stronger multirow joints, with particular regard to the bearing-bypass interaction.
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003323
EISBN: 978-1-62708-176-4
... coefficient testing, torque tension testing, locknut testing, and angular ductility and rotational capacity tests. The article reviews the basic methods and fundamental principles for mechanical testing of externally and internally threaded fasteners and bolted joints. The test methods for externally threaded...
Abstract
This article provides an overview of the relationships between torque, angle-of-turn, tension, and friction and explains how they are measured and evaluated. It focuses on the principle, test equipment, procedure, evaluation, and test report of various testing methods, namely, friction coefficient testing, torque tension testing, locknut testing, and angular ductility and rotational capacity tests. The article reviews the basic methods and fundamental principles for mechanical testing of externally and internally threaded fasteners and bolted joints. The test methods for externally threaded fasteners include product hardness, proof load, axial and wedge tension testing of full-sized products, tension testing of machined test specimens, and total extension at fracture testing. Product hardness, proof load, and cone proof-load test are the test methods for internally threaded fasteners. The article concludes with a description of torque-angle signature analysis and the specification of measurement accuracy for torque and clamp force.
Image
Published: 01 January 1990
Fig. 8 Hardness distribution for eight lots of 1038 steel bolts. Bolts, 13 mm ( 1 2 in.) in diameter, were all made from one heat of steel. The bolts were heat treated in one plant to eight different levels of nominal hardness. Tests were made in the originating plant and in seven
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Image
Published: 01 January 1990
Fig. 9 Fatigue data for 1040 and 4037 steel bolts. The bolts ( 3 8 by 2 in., 16 threads to the inch) had a hardness of 35 HRC. Tensile properties of the 1040 steel at three-thread exposure were yield strength, 1060 MPa (154 ksi); tensile strength (axial), 1200 MPa (175 ksi); tensile
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Image
Published: 01 January 2006
Fig. 1 Illustration of a rock bolt for mine reinforcement. The rock bolt is rotated, and at the same time pushed through the chemical cartridge, mixing the resin components. Source: Ref 17
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Published: 01 January 2006
Image
Published: 01 January 1996
Fig. 4 Stress concentration factor ( K t ) versus bolt diameter for bolts with standard metric threads. Source: Ref 14
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Image
Published: 30 September 2015
Fig. 14 (a) Bolted splice plate with heavy rusting on bolt heads, edges, and in crevices, all difficult areas to coat. (b) Rusted rivet heads and bolts on an old truss bridge. These irregular surfaces are difficult to paint thoroughly. Courtesy of KTA-Tator, Inc.
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Image
Published: 01 January 2002
Fig. 2 4340 steel wing-attachment bolt that cracked along a seam. (a) Bolt showing crack (arrows) along entire length. (b) Branching cracks (arrows) at head-to-shank radius. (c) Head of bolt showing cracking (arrows) about halfway through bolt-head diameter. (d) Section through bolt showing
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Image
Published: 01 January 2002
Fig. 10 AISI type 431 stainless steel T-bolt that failed by SCC. (a) T-bolt showing location of fracture. Dimensions given in inches. (b) Fracture surface of the bolt showing shear lip (arrow A), fine-grain region (arrow B), and oxidized regions (arrows C). (c) Longitudinal section through
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Image
Published: 30 August 2021
Fig. 8 The 4340 steel wing-attachment bolt that cracked along a seam. (a) Bolt showing crack (arrows) along entire length. (b) Branching cracks (arrows) at head-to-shank radius. (c) Head of bolt showing cracking (arrows) approximately halfway through bolt-head diameter. (d) Section through
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Book Chapter
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005555
EISBN: 978-1-62708-174-0
... Abstract This article serves as a basic information source for those interested in accomplishing one-sided, no-hole attachment of metal fasteners. The stud arc-welding process is a substitute for fastening procedures such as drilling and tapping, bolting, and self-tapping screws. The article...
Abstract
This article serves as a basic information source for those interested in accomplishing one-sided, no-hole attachment of metal fasteners. The stud arc-welding process is a substitute for fastening procedures such as drilling and tapping, bolting, and self-tapping screws. The article describes the operating principle of, and the tooling and equipment used for, the welding process. It contains tables that present information on the mechanical properties of aluminum, stainless steel, and low-carbon steel stud arc welded fasteners. The article details the different tests conducted to ensure the quality of stud arc-welded fasteners. It concludes with information on safety precautions to be followed in the welding process.
Image
Published: 01 June 2024
Fig. 34 Three fractured grade 8 steel bolts removed from a hydraulic cylinder gland seal. Varying amounts of fatigue fracture and shear fracture at final overload are apparent. In a properly tightened bolted joint, the first bolt to fail is under the lowest load, because the load is shared
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Book: Fatigue and Fracture
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002368
EISBN: 978-1-62708-193-1
... Abstract This article discusses the effect of thread design, preload, tightening, and mean stress on the fatigue strength of bolt steel. It describes the factors influencing fatigue failures in cold-driven and hot-driven riveted joints. The factors affecting the fatigue resistance of bolted...
Abstract
This article discusses the effect of thread design, preload, tightening, and mean stress on the fatigue strength of bolt steel. It describes the factors influencing fatigue failures in cold-driven and hot-driven riveted joints. The factors affecting the fatigue resistance of bolted friction joints are also discussed. The article reviews stress concentrations in pin joints and discusses stress-intensity factors for mechanically fastened joints.
Book Chapter
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001018
EISBN: 978-1-62708-161-0
... Abstract This article discusses the properties of threaded fasteners made from carbon and low-alloy steels containing a maximum of 0.55% carbon. It provides guidelines for the selection of steels for bolts, studs, and nuts intended for use at temperatures between -50 and 370 deg C. The article...
Abstract
This article discusses the properties of threaded fasteners made from carbon and low-alloy steels containing a maximum of 0.55% carbon. It provides guidelines for the selection of steels for bolts, studs, and nuts intended for use at temperatures between -50 and 370 deg C. The article also discusses steels rated for service above 370 deg C and describes internationally recognized grade designations. The specifications provided can be used to outline fastener requirements, control manufacturing processes, and establish functional or performance standards. The most commonly used protective metal coatings for ferrous metal fasteners; zinc, cadmium, and aluminum; are described as well.
Image
Published: 01 January 2005
Fig. 52 The fastener was discovered in a marine estuary. The bolt displayed significant wastage along the shaft and at the end. The attack at the midpoint is considered to be a combination of crevice and abrasion from whatever had been retained by the bolt—possibly a mooring for a boat
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Image
in Mechanisms and Appearances of Ductile and Brittle Fracture in Metals
> Failure Analysis and Prevention
Published: 15 January 2021
Fig. 80 Section of the silo showing the bottom two bolt holes associated with the circumferential angle bolted to the concrete pad, and the first bolt hole associated with the vertical “U” channels. The bottom right bolt hole is distorted, and the upper bolt hole has been torn out. The tear
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Image
in Mechanisms and Appearances of Ductile and Brittle Fracture in Metals
> Failure Analysis and Prevention
Published: 01 January 2002
Fig. 80 Section of the silo showing the bottom two bolt holes associated with the circumferental angle bolted to the concrete pad, and the first bolt hole associated with the vertical “U” channels. The bottom right-hand bolt hole is distorted, and the upper bolt hole has been torn out
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