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maximum shear stress

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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
... analysis of the component is necessary. Stress analysis is initially performed in the design stage of a development project. Frequently, principal stresses and maximum shear stresses are important to the designer because both are used in common failure expressions to calculate maximum load capability (e.g...
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
... project. Frequently, principal stresses and maximum shear stresses are important to the designer because both are used in common failure expressions to calculate maximum load capability (e.g. multiaxial yield criteria). One failure mode theory is the Rankine (or maximum normal stress) criterion, where...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001596
EISBN: 978-1-62708-225-9
... be expected that the maximum stress will be C times the amount of the nominal value calculated with Eq 2 with the correction factor applied. For this case the lateral force is 13.88 N at 9 mm deflection, resulting in a value for C of 3.31 or a maximum shear stress of 535.2 MPa. If the deflection were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001438
EISBN: 978-1-62708-224-2
...Abstract Abstract A crane hook of 200T rated capacity failed suddenly at an indicated load of 143T, while the crane was undergoing a load test. Fracture took place through the intrados of the hook at the region of maximum stress. The jib and other portions suffered subsequent damage following...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001807
EISBN: 978-1-62708-241-9
... the surface where the maximum orthogonal shear stress and a weak point in the material occurs simultaneously. Farshid et al. [ 3 ] and Miyashita et al. [ 5 ] studied the rolling contact fatigue of sintered alloys by means of rolling contact fatigue tests in laboratory and finite element simulation. The crack...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... of maximum and orthogonal shear stress. (b) Propagated subsurface cracks leading to coating delamination during RCF failure of WC-Co coating Fig. 15 Schematic of coating delamination process for cermet and ceramic coatings Fig. 16 Bulk deformation failure of WC-Co coating, indicating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047986
EISBN: 978-1-62708-217-4
... several small spalling cavities in the inner-ring raceway. Metallographic examination of a circumferential section through the largest cavity revealed an elongated subsurface inclusion (arrow, Fig. 1d ). This inclusion was in the region of maximum shear stress in the bearing (approximately 0.1 mm...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
..., resulting in severe work roll damage as well as machine downtime and increased maintenance costs. work rolls fracture surface-initiated spalling cast steel beach marks shear ledges (chevron rays) ratchet marks heat checks SEM fractography strain rate maximum shear stress H13 (chromium hot...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001802
EISBN: 978-1-62708-241-9
..., fractures in torsion on a plane parallel to the maximum shear stress. Higher magnification SEM analysis of the torsional overload fracture surfaces also reveals distinctive features. Near the outer diameter (OD) of the wire, the torsional failure fracture surfaces show a large amount of rubbing, shown...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001672
EISBN: 978-1-62708-236-5
... mechanics calculation. The critical stress intensity factor, K IIIc , was determined using the maximum shear stress developed at failure and this equation: (Eq 4) K IIIc = 0.41   T f / γ   2.5 utilized by Shah [ 4 ], where T f is torque at fracture and r is specimen radius...
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
... commonly used stress ratios are: the ratio, A , of the alternating stress amplitude to the mean stress ( A = S a / S m ) and the ratio, R , of the minimum stress to the maximum stress ( R = S min / S max ). If the stresses are fully reversed, the stress ratio R becomes −1; if the stresses...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... characteristics of a stress cycle are the stress amplitude, S a , and the mean stress, S m . The amplitude, S a , is determined from the maximum and minimum stress of the cycle: (Eq 1) S a = ( S max − S min ) / 2 Fig. 1 Characteristics of a stress ( S )/time ( t ) cycle...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... ROLLING-CONTACT FATIGUE (RCF) is a common failure mode in components subjected to rolling or rolling-sliding contact (e.g., rolling-element bearings, railway tracks, gears). It is characterized by crack propagation caused by the near-surface alternating shear stress field, caused by rolling or rolling...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... cleavage cracking of grain-boundary carbides in low-carbon steels. This model was examined ( Ref 12 ) and it was determined that the maximum normal stress at the pileup occurred on a plane rotated 70.5° from the slip plane. Using this model, it can be shown that a crack is nucleated when the shear stress...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... across the full width of the specimen, so that the crack propagates on both a plane of maximum normal stress and planes of maximum shear stress, creating macroscale shear lips on the sides of the specimen. Examination of the fracture surface at the microscale reveals that crack propagation in the flat...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... between the rolling elements (balls or rollers) and the raceways. Although the stresses involved appear to be compressive only, just below the surface there are high shear stresses and low tensile stresses. Subsurface stresses are described in more detail later in this article. Repeated stressing in shear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... of G.J. Fowler, Fowler Inc. Fig. 6 Schematic illustration of stress distribution associated with rolling contact of a cylindrical member (at top) against a flat surface. The maximum shear stress occurs beneath the surface and can result in subsurface fatigue crack initiation. Source: Ref 12...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
..., this surface exhibits beach marks. Courtesy of G.J. Fowler, Fowler Inc. Fig. 6 Schematic illustration of stress distribution associated with rolling contact of a cylindrical member (at top) against a flat surface. The maximum shear stress occurs beneath the surface and can result in subsurface...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... 18 Fig. 4 Distribution of required hardness within the thickness of the material (it follows the maximum shear stress, τ shear , below the surface) under normal compressive load, F compr (most loaded rolling element), where curve 1 is shear stress, τ shear , and curve 2 is material...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001366
EISBN: 978-1-62708-215-0
... in the plane of maximum shear stress. Stage I growth occurs when the stress-intensity range is near threshold conditions. At higher stress-intensity ranges, stage II growth is observed, where the crack growth is normal to the applied stress. As a crack grows as the result of a component vibrating at its...