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mechanical fasteners

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... Abstract This article discusses different types of mechanical fasteners, including threaded fasteners, rivets, blind fasteners, pin fasteners, special-purpose fasteners, and fasteners used with composite materials. It describes the origins and causes of fastener failures and with illustrative...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... Abstract This article first provides an overview of the types of mechanical fasteners. This is followed by sections providing information on fastener quality and counterfeit fasteners, as well as fastener loads. Then, the article discusses common causes of fastener failures, namely...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047113
EISBN: 978-1-62708-219-8
.... , Failures of Mechanical Fasteners , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 529 – 549 10.31399/asm.hb.v11.a0001812 • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001727
EISBN: 978-1-62708-225-9
... aluminum pieces showed no sign of general corrosion (the chalky white residue), while untreated pieces were attacked extensively under identical conditions of environment and time. Selected References Selected References • Jensen W.J. , Failures of Mechanical Fasteners , Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0048674
EISBN: 978-1-62708-222-8
... structure and the method of plating the fastener with zinc was changed from electroplating to a mechanical deposition process to thus avoid hydrogen embrittlement. Fasteners, corrosion Electroplating Lawn furniture 1060 UNS G10600 Surface treatment related failures Hydrogen damage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001649
EISBN: 978-1-62708-234-1
... of changes in the thread surface condition (i.e., thread compounds, mechanical damage) was discernable. The macroscale appearance of the fracture is quasi-helical, suggesting some degree of torsional loading (common for a threaded fastener). Fig. 2 Higher magnification photograph of the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001678
EISBN: 978-1-62708-218-1
... wheels Bolts Galvanized steels Medium-carbon alloy steel Fatigue fracture Analysis of service failures is a complicated business because several mechanisms can operate simultaneously or sequentially. For example a structural component, bolt (fastener) holding the wheel of a vehicle can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006432
EISBN: 978-1-62708-217-4
... rough and more granular than would be expected from pure mechanical fatigue. This indicated an allied corrosion mechanism. Cracks other than the one leading to failure were observed. Metallographic examination of the bolt cross section showed many cracks typical of stress-corrosion damage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001178
EISBN: 978-1-62708-235-8
... 12 Selected References Selected References • Jensen W.J. , Failures of Mechanical Fasteners , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 529 – 549 10.31399/asm.hb.v11.a0001812 • Hydrogen Damage and Embrittlement , Failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0090929
EISBN: 978-1-62708-236-5
... Abstract Size M5 x 0.8 mm, class 8.8 metric screws were failing during application, reportedly at the normal installation torque. Investigation (visual inspection, metallographic analysis, and unetched 8.9x fractographs) supported the conclusion that the fasteners failed via ductile overload...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001139
EISBN: 978-1-62708-221-1
... them by the use of mechanical fasteners such as bolts. In this instance, the outer race was bolted to the carrier, and the inner race was welded to the turntable. The inner race of this bearing is shown in Fig. 2 . The thickness of the bearing is 3 4 inch. The manufacturer chose to weld...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001030
EISBN: 978-1-62708-214-3
... . Fig. 5 Multiple cracking and crack branching in D6ac steel frame. 142×. Fig. 6 Crack initiation site, showing untempered martensite. Fig. 7 Fracture surface, showing intergranular cracking. Fig. 8 Typical machining burn in fastener hole. 212×. Mechanical Properties...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001306
EISBN: 978-1-62708-215-0
... caused the inner wheel nuts to loosen during break-in and lose the required clamping force. The development and promotion of educational programs on proper wheel tightening procedures was recommended. Automotive wheels Bolted joints Fasteners Mechanical properties 1541 UNS G15410 Fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001263
EISBN: 978-1-62708-224-2
.... , Failures of Mechanical Fasteners , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 529 – 549 10.31399/asm.hb.v11.a0001812 • Becker W.T. and McGarry D. , Mechanisms and Appearances of Ductile and Brittle Fracture in Metals , Failure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001383
EISBN: 978-1-62708-215-0
... a few miles to as many as 25,000 miles. Pertinent Industry Specifications and Manufacturer's Requirements Threaded fasteners used in the automotive industry are specified to SAE Standard J429, “Mechanical and Material Requirements for Externally Threaded Fasteners.” This standard lists different...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048634
EISBN: 978-1-62708-225-9
...-plated AISI 8740 alloy steel fasteners that failed by hydrogen embrittlement. See also Fig. 2 . Fig. 2 Scanning electron micrograph of fracture surface of fasteners shown in Fig. 1 . 880× Mechanical Testing To simulate installation conditions, fasteners from several lots were...
Image
Published: 30 August 2021
Fig. 6 Fractographic evaluation for life assessment purposes. (a) Wing spar that had mechanically induced damage at a fastener hole (indicted by an arrow). (b) Plot showing how fracture information is used to establish initial and recurring inspection requirements More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001483
EISBN: 978-1-62708-225-9
... Selected References • Jensen W.J. , Failures of Mechanical Fasteners , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 529 – 549 10.31399/asm.hb.v11.a0001812 • Lampman S. , Intergranular Fracture , Failure Analysis and Prevention...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001432
EISBN: 978-1-62708-221-1
... into service. Selected References Selected References • Jensen W.J. , Failures of Mechanical Fasteners , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 1986 , p 529 – 549 10.31399/asm.hb.v11.a0001812 • Failures Related to Welding , Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001703
EISBN: 978-1-62708-227-3
... Abstract This paper describes the metallurgical investigation of a broken spindle used to attach an antenna to the mast of a naval vessel. Visual inspections of both failed and intact fastener assemblies were carried out both on-board ship and in the laboratory followed by metallographic...