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lug joint

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Published: 01 January 2002
Fig. 2 Fractured lug, part of a pin-joint assembly, showing sequence of fracture. Fracture A preceded fractures B and C. More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001020
EISBN: 978-1-62708-214-3
... Abstract The right landing gear on a twin-turboprop transport aircraft collapsed during landing. Preliminary examination indicated that the failure occurred at a steel-to-aluminum (7014) pinned drag-strut connection due to fracture of the lower set of drag-strut attachment lugs at the lower end...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006814
EISBN: 978-1-62708-329-4
... a connection. A connection is a combination of structural elements and joints used to transmit forces between two or more members ( Ref 3 ). While welding is used to overlay material and to repair cracks, most manufacturing and construction operations use welding to make connections that are used to transmit...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... imperfections may be tolerable and how the other may be root-cause defects in service failures. The article explains the effects of joint design on weldment integrity. It outlines the origins of failure associated with the inherent discontinuity of welds and the imperfections that might be introduced from arc...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... gear socket assembly due to liquid-metal-induced embrittlement (LMIE). (a) Overall view of the air-melted 4330 steel landing gear axle socket. Arrow A indicates the fractured lug; arrow B, the bent but unfailed lug. Arrow C indicates the annealed A-286 steel interference-fit plug containing the grease...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
...: ANSI/UL 486A Wire Connectors and Soldering Lugs for use with Copper Conductors ANSI/UL 486B Wire Connectors for Use with Aluminum Conductors ANSI/UL 486E Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors Standards 486B and 486E require that terminals intended...
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
... be given to the purpose of the fastener, the type and thickness of materials to be joined, the configuration and total thickness of the joint to be fastened, the operating environment of the installed fastener, and the type of loading to which the fastener will be subjected in service. A careful analysis...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
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
... of the joint to be fastened, the operating environment of the installed fastener, and the type of loading to which the fastener will be subjected in service. A careful analysis of these requirements is necessary before a satisfactory fastener can be selected. The selection of the correct fastener or fastener...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... is more detrimental than long-transverse stressing. For example, Fig. 7 shows a fractured lug of a forged 7075-T6 aluminum alloy with cracks that initiated because of stresses acting across the short-transverse grain direction. Intergranular SCC developed when assembly of a pin in the machined hole...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... the fragments of broken components which, when assembled and photographed, may indicate the sequence in which fractures occurred. Figure 2 shows a lug that was part of a pin-joint assembly; failure occurred when the pin broke out of the lug. With the broken pieces of the lug fitted together, it is apparent...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001811
EISBN: 978-1-62708-180-1
... lugs or eyes Built-in members that are the items necessary for the operation of lifting equipment, such as shafts, gears, and drums Most of the failures discussed are related to the more common and critical components of lifting equipment used in steel mills and similar industrial applications...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... of the main crack front in the region of its mid-width suggests a high stress in the central zone of the column, probably due to a residual tensile stress following heat treatment. A most uncommon fatigue fracture is depicted in Fig. 6 . It occurred in a lug on an engine frame, the part illustrated being...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006830
EISBN: 978-1-62708-329-4
..., such as lifting lugs or eyes Built-in members that are the items necessary for the operation of lifting equipment, such as shafts, gears, and drums Most of the failures discussed are related to the more common and critical components of lifting equipment used in steel mills and similar industrial...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... joint between the clapper and a 20-mm ( 3 4 -in.) diam support rod, which was also made of ASTM A36 structural steel. Examination revealed voids on the fracture surface and evidence of incomplete weld penetration. The overall appearance of the fracture surface indicated brittle fracture...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
...) postconstruction code after the creation of the ASME/API Joint Committee on Fitness-for-Service (FFSJC). The third edition was published in 2016 with a major reorganization dividing the documents into 13 parts that are linked or are used in combination. It also has a series of annexes that provide valuable...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... occurred. The example emphasizes that materials should be specified carefully by the engineer responsible and not left to the discretion of those making the installation. Fig. 16 Galvanic attack at a water pipe joint involving dissimilar metals Figure 17 shows a 316 stainless tube that had...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... attack at a water pipe joint involving dissimilar metals Figure 17 shows a 316 stainless steel tube that had carried cooling water in a heat exchanger. The outside had been in contact with oil entering the heat exchanger at approximately 80 °C (175 °F). Attack took place on the outside, as shown...