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twist compression

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Published: 15 January 2021
Fig. 15 Twist compression test setup. Source: Ref 101 More
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... modes of adhesive wear including scoring, scuffing, seizure, and galling, and describes the processes involved in classic laboratory-type and standardized tests for the evaluation of adhesive wear. It includes information on standardized galling tests, twist compression, slider-on-flat-surface, load...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001787
EISBN: 978-1-62708-241-9
... the effect of drastic abrasion and corrosive medium, the drilling bit is subject to tension and compression, bending force, and twisting and cyclic stress applied by rock drill with high frequency and high impact energy [ 4 ]. The present paper analyzes the unexpected failure of the drilling bit made...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
...; picture width ∼100 μm Another way to locate the fracture origin, especially in strength tests, is to make use of the overall crack pattern. This can be facilitated in bend tests by applying tape to the compression side of the specimen before breaking it. The tape holds the pieces together without...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001295
EISBN: 978-1-62708-215-0
... were observed in each case. The wire appeared flattened or compressed for some distance on one side of the fracture, and a short, deeper mark was observed on the other side. Failure Type 2 Failure type 2 showed cup-and-cone fracture similar to specimen 1, with no sign of surface scratching...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001733
EISBN: 978-1-62708-225-9
... alternating stress, and buckling (compressive) cyclic loading. The mode of failure was found to be reversed bending fatigue caused by drive cables moving over guide pulleys of small radii. Modifications of the machinery and drive cable system were suggested. Bending fatigue Drive cables Rubber...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001290
EISBN: 978-1-62708-215-0
.... The toilet bowl was caved in ( Fig. 2b ), as though deformed by compressive forces directed from the region below the washbasin. Fig. 2(c) illustrates damage to the various instruments in the cockpit. There was a hole in the backrest of the observer's seat, which was situated between the toilet wall...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001763
EISBN: 978-1-62708-241-9
... of the fractured shaft. ( a ) Failed shaft. ( b ) Close view of the fracture surface with cracks propagating at direction of 45°, approximately, to the shaft axis. ( c ) Permanently twisted deformation of spline teeth with cracks at root An analytical approach based on mechanics of materials and failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046015
EISBN: 978-1-62708-235-8
... location in relation to the rung as the fracture in T-section B in the right-hand side rail. All four T-sections had suffered other damage of a lesser degree, mostly caused by their being bent and/or twisted as the ladder collapsed. The fracture surfaces were examined visually and by optical (light...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
..., the surface can curve as the principal stress plane orientation changes. As the fracture continues to the compression side of the component, the principal stress orientation changes, often resulting in a lip or compression curl in the final fracture region ( Fig. 3 ). Fig. 3 Compression curl of bend...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... and compressive failure stresses), anisotropic behavior and nonconstancy of volume during deformation. The historically early models (Rankine, Tresca, von Mises, and octahedral shear) were phenomenological and as proposed could be applied to either failure by yield or failure by fracture. They have also been...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... based on maximum strain). Additionally, some criteria take into account polar behavior (unequal tensile and compressive failure stresses), anisotropic behavior, and nonconstancy of volume during deformation. The historically early models (Rankine, Tresca, von Mises, and octahedral shear) were...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
..., the stress at any point alternates. Alternating stress refers to cycling between two stresses of opposite algebraic sign, that is, tension (+) to compression (−) or compression to tension. Torsional fatigue can result from application of a fluctuating or an alternating twisting moment (torque). Axial fatigue...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... and temperatures that vary from extremely low, as in arctic or cryogenic environments, to extremely high, as in gas turbines. In addition, shafts may be subjected to a variety of loads—in general, tension, torsion, compression, bending, or combinations of these. Shafts are also sometimes subjected to vibratory...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
..., has a very high shear strength, and is only slightly affected by compressive loads as long as constant temperature is maintained. Certain rules about a lubricant should be remembered in designing gearing and analyzing failures of gears. First, load is transferred from a gear tooth to its mating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001819
EISBN: 978-1-62708-180-1
...-to-metal (McKee) Fig. 2 Typical examples for orthopedic internal fixation devices (schematic). (a) and (b) Round hole bone plates (can be used with compression devices). (c) Classical Sherman bone plate. (d) to (g) Dynamic compression plates of various sizes. (h) Compression bone plate with glide...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
...; intergranular fracture in large grain size Fracture surface roughness Increase in surface roughness in direction of crack growth (may be affected in bending by compressive stressed region when crack moves into this region) Smooth region plus rough region in direction of growth—cyclic loading...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001646
EISBN: 978-1-62708-219-8
... resistance. 2 Fig. 1 Schematic of the section of a locked coil wire rope showing outer layer of interlocking Z-profile wires The wire ropes are subjected to tensile, bending, and compressive stresses during service. Compared with conventional wire ropes with fiber cores and round steel wires...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... and then changed to compressed natural gas (CNG) type. As a result, the mean power of the engine increased from 100 to 110 kW, which can be a cause of higher thermal stresses. Fig. 1 Cracked zone on the cylinder head Measurements The bolt type that was tightened in the hole was DIN-906 which has...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006801
EISBN: 978-1-62708-329-4
... be found along the surface of wrinkles opening perpendicular to the forming axis. These are sometimes called compression cracks because the wrinkles are being compressed. This description is a misnomer because the surface of the wrinkles is in tension. Another type of crack has been termed shear...