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clamp-up

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001018
EISBN: 978-1-62708-217-4
... occurred at the clamping point near the top end of this spring ( Fig. 1 ). Close visual examination of the failure showed evidence of severe brinelling at one corner in the clamping area. A close-up view of the damaged area is also shown in Fig. 1 . For the most part, the fracture surfaces were clean...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046512
EISBN: 978-1-62708-234-1
... Abstract Immediately after installation, leakage was observed at the mounting surface of several rebuilt hydraulic actuators that had been in storage for up to three years. At each joint, there was an aluminum alloy spacer and a vellum gasket. The mounting flanges of the steel actuators had...
Image
Published: 01 June 2019
Fig. 1 Discovery of a defect in one corner of this failed aircraft landing gear (close-up) provided the key. Two conclusions were reached: the corner was subjected to repeated brinelling during normal landing loads. This was probably compounded by looseness in a clamping device. More
Image
Published: 01 January 2002
Fig. 26 Fractured pin and gripping cam made from AISI S5 tool steel. (a) These fractures occurred when the plate-lifting clamps containing these parts failed early in service. (b) As shown by this macroetched (10% aqueous nitric acid) pin, both the cam and the pin were heavily decarburized. (c More
Image
Published: 30 August 2021
Fig. 26 Fractured pin and gripping cam made from AISI S5 tool steel. (a) These fractures occurred when the plate-lifting clamps containing these parts failed early in service. (b) As shown by this macroetched (10% aqueous nitric acid) pin, both the cam and the pin were heavily decarburized. (c More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001114
EISBN: 978-1-62708-214-3
.... At the time of failure, the clamp was made up with a 3.2 mm ( 1 8 in.) thick beveled spacer ring between one hub shoulder and the clamp. The effect of the spacer ring on operating and makeup stresses was found to be negligible. As mentioned previously, no measurable plastic deformation occurred...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... between the bolt and bore. The preload in a bolt often has a significant effect on deflections and stresses [ 6 , 7 ]. In this work, a three-dimensional finite-element analysis model was set up. A schematic diagram of the steady clamp is presented in Fig. 6a . Figure 6b exhibits the finite-element...
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.petrol.c0091594
EISBN: 978-1-62708-228-0
..., and the leaks were clamped. A year later, 15 additional leaks were discovered, again at pipe-to-elbow welds in lean amine lines. Further nondestructive testing located other cracks, giving a total of 35. These lines had been in service for approximately eight years. Investigation (visual inspection, hardness...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001903
EISBN: 978-1-62708-217-4
... Abstract Fretting and/or fretting corrosion fatigue have been observed on such parts as main rotor counterweight tie rods, fixed-pitch propeller blades, propeller blade clamps, pressure regulator lines, and landing gear support brackets. Microcracks started from severe corrosion pits...
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
... in.) into the breaker panel. A close-up of one of the wires is shown in Fig. 4 . Fig. 2 Electrical panel and surrounding area, incident 1 Fig. 3 Close-up of electrical panel in incident 1. Arrow indicates where aluminum wires entered the box. Fig. 4 Close-up of one of the melted and arced...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... molding, compression molding, transfer molding, hand lay-up process, casting, and additive manufacturing. compounding operations dies extruder extrusion molding injection molding mixing molds process troubleshooting product design screw extruder thermoforming webline handling Extrusion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001454
EISBN: 978-1-62708-220-4
... was able to accumulate and build up pressure. Had the material been free from discontinuities of appreciable size, the blistering would not have occurred. Blistering Corrosion environments Storage tanks Low-carbon steel Hydrogen damage and embrittlement Examination of the interior...
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
... and the apparent ease with which metal can be deposited has led to many instances of misuse. It has been applied to materials which are only weldable by special procedures, to the indiscriminate building-up of worn components and for the correction of machining errors by ill-informed or unscrupulous persons...
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
... expansion and contraction of composites and their fasteners, thus altering clamp-up loads. Therefore, all new joint designs should be thoroughly tested to ensure satisfactory service. Although adhesives are generally used to join composites, mechanical fasteners are added to increase reliability when severe...
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
... and contraction of composites and their fasteners, thus altering clamp-up loads. Therefore, all new joint designs should be thoroughly tested to ensure satisfactory service. Although adhesives are generally used to join composites, mechanical fasteners are added to increase reliability when severe service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001138
EISBN: 978-1-62708-231-0
... cylinder driven off the PTO of the truck. The wheel/axle set was rigidly fixed into an up or down position by the use of locking pins. It was assumed by the manufacturer that there would be no load on the cylinder once the wheel/axle set was in its locked position. However, as the cylinder pivoted about...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001810
EISBN: 978-1-62708-241-9
... beyond dead point. The front end of the torsion bar fits in the picking shaft, which is clamped on the picking lever (11) so that it performs the rotary movement of the picking shaft and torsion bar. When the projectile (2) is ready for picking, the rollers (12) to the left and right of the cam run up...
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
... inspection showed that the stud broke between the flange and the pedestal bracket ( Figure 4 ), at the point where two U-spacers would butt up against each other. Following removal of the antenna, various additional pieces of hardware were supplied, including all three of the threaded studs, and most...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... injection molding, but surface quality and impact resistance usually suffer significant reductions. With some of the process variations, the processing pressures are much lower than with normal injection molding, allowing very large parts of up to 2 m 2 (22 ft 2 ) to be produced on machines with a clamping...