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mounting brackets

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001767
EISBN: 978-1-62708-241-9
... Abstract Six transformer brackets failed in service, sending a group of three pole-mounted transformers to the ground below. The brackets were made from acrylonitrile-butadiene-styrene (ABS) resin and had been in service for more than 30 years. Remnants of the fractured brackets were analyzed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001618
EISBN: 978-1-62708-219-8
... in. thick plate. The cracks originated in the vicinity of the welds between the mounting bracket and the arms. Fig. 1 (a) and (b) Sketch of typical arm and cross section One recurring remark throughout this investigation was, “This is the way we have always done it, and nothing has changed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001514
EISBN: 978-1-62708-218-1
... rolled over after an accident. The tank had been attached through twelve mounting bracket weldments. In all but two cases,double fillet welds which attached the brackets to a channel fractured with no deformation of the base metal. Figure 10 shows one of the brackets, in which a partial separation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001744
EISBN: 978-1-62708-217-4
... Abstract Two examples involved brittle fracture promoted by small fatigue cracks owing to welding deficiencies. Other parts involving inadequate welding were a ski-wheel axle flange, ski fitting (brackets), and undercarriage shock strut stub assembly. In an attach fitting for an engine mount...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001506
EISBN: 978-1-62708-217-4
... fitting had failed, and at the other end by the induction system. A fuel flow transducer is mounted near the mid point of the line and is supported by the bracket. The fuel flow transducer is a relatively heavy mass and requires the secure support of the bracket, so that vibration loads applied during...
Image
Published: 30 August 2021
Fig. 26 Fractured L-shaped bracket and cracked welded connection between the exhaust manifold and the mounting flange More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001028
EISBN: 978-1-62708-214-3
... are used in the lubrication subsystem of a large commercial helicopter engine. The oil tank assemblies are mounted directly to the forward end of the turbine engines and are subjected to a large amount of vibration. Because the tanks are not part of a high-pressure system (35 kPa, or 5 psig, maximum...
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
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
... of the antenna. Figure 1 shows the antenna mounting arrangement. There are two of these units on each of the twelve ships in this particular class, the first of which entered service in 1991. The failed component had been in service for approximately three years. Fig. 1 Antenna assembly and mast support...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
... envelope (adapted from Ref 5 ). Case Study 2: BOAC Flight 911 In 1966, the in-flight breakup of a Boeing 707 occurred over Gotemba, Japan, near Mount Fuji. Analysis of the wreckage indicated that the airplane experienced an abrupt asymmetric upward load on the wings, with the load primarily...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006763
EISBN: 978-1-62708-295-2
... where the camera can be mounted to either a tabletop photo stand or to a tripod. Shutter Speed Professional digital camera shutter speed in failure analysis photography is critical in creating sharp photographs. With nonflash photography, the highest shutter speed possible is preferred because...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006851
EISBN: 978-1-62708-395-9
... to diffraction. The typical aperture setting for most failure analysis photography is F8 to F11. Higher aperture settings may be used in conditions where sufficient light is available, such as through the use of an external flash, and/or when the camera can be mounted, such as to a tripod, to eliminate vibration...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... surface was covered with an oxide film and showed evidence of significant heating during welding. Eight sections were then cut bracketing the crack to facilitate further examinations. Brookhaven Test Results Table 1 Brookhaven Test Results Base Metal Weld Metal Fe 66.6 67.9 63.6...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003527
EISBN: 978-1-62708-180-1
... be capable of being mounted on the camera as a “hot shoe” flash or on an extension cord for side lighting. A typical flash arrangement with an off-camera extension cord is shown in Fig. 3 . It is preferable that flash photography be performed in a through-the-lens metering mode to achieve optimal exposure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... it subsequently extended. This is usually ascertained using a number of visual-based techniques, such as stereomicroscopy, scanning electron microscopy (SEM), and the preparation of mounted cross sections. Noncatastrophic failure modes are also relevant, and these include discoloration, distortion...
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
... stress. Nine contact fingers were mounted in each of the two slots of each retainer, and a bank of four to eight retainers held the electrical contacts for a typical circuit breaker system. When a retainer cracked, the usual consequences were open circuits across some contacts, short circuits...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003519
EISBN: 978-1-62708-180-1
... fails and everything stops. Functional failure of a component, such as a bearing or bracket, is very obvious. Functional failure of a machine can apply to something as large as an airplane or as small as a nutcracker. The difficulty in determining the root cause of the failure increases...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... cracking, and fatigue. The determination of the fracture failure mode involves identifying the crack-initiation mechanism and the propagation mode. This is usually ascertained using visual-based techniques such as stereomicroscopy, scanning electron microscopy, and the preparation of mounted cross sections...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
..., such as a bearing or bracket, is very obvious and sometimes catastrophic. Functional failure of a machine can apply to something as large as an airplane or as small as a nutcracker. The difficulty in determining the root cause of the failure increases with the complexity of the component or machine, but the root...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1