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single-tooth overload test

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003327
EISBN: 978-1-62708-176-4
... of the results. The article describes four areas of the characterizations: dimensional, surface finish/texture, metallurgical, and residual stress. The rolling contact fatigue test, single-tooth fatigue test, single-tooth single-overload test, and single-tooth impact test are some of the gear action simulating...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
... fracture began due to excessive stress in these locations. ∼2× Fig. 512 Surface of a spalling-fatigue fracture in a single tooth of a heavily loaded final-drive pinion of AISI 8620 steel, carburized and hardened to 60 HRC in the case, showing vertical scratches, which indicate that appreciable...
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
.... With increased angularity, the length of the slanted contact line on each tooth is shortened, and shorter but more steeply slanted lines of contact sweep across the faces of several teeth simultaneously. The total length of these lines of contact is greater than the length of the single line of contact between...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000606
EISBN: 978-1-62708-181-8
... is a polished and etched cross section of a partially flame-hardened crane gear of AISI 1045 steel in which fatigue cracks formed at the roots of many teeth after one year of service. The cracks have been sharply delineated by etching. Note that hardening did not extend even to the root fillet of any tooth...
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
.... Original magnification: 100× Fig. 1 Free-body diagrams showing orientation of normal stresses and shear stresses in a shaft and the single-overload fracture behavior of ductile and brittle materials. (a) Under simple tension. (b) Under torsion. (c) Under compression loading. See text...
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
... tooth in the impeller also exhibited some damage. Relatively smooth cavities and undercutting of the flank on the pressure side of the spline teeth indicated that the damage had not been caused by wear from metallic contact between the splines but by an erosion or abrasion mechanism. Hardness...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002375
EISBN: 978-1-62708-193-1
... , 1992 , p 25 – 29 • Pizzichil W. , Testing Gear Teeth for Low-Cycle Fatigue and Static Bending Strength , Heat Treating , Vol 24 ( No. 2 ), 1992 , p 14 – 20 • Rose H.J. , Vibration Signature and Fatigue Crack Growth Analysis of a Gear Tooth Bending Fatigue Failure , Conf...
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
...: Final, sudden fracture of the remaining cross section Stage III occurs during the last stress cycle when the cross section cannot sustain the applied load. The final fracture—which is the result of a single overload and which can be brittle, ductile, or a combination of the two—is not really...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
...Abstract Abstract This article first reviews variations within the most common types of gears, namely spur, helical, worm, and straight and spiral bevel. It then provides information on gear tooth contact and gear metallurgy. This is followed by sections describing the important points of gear...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005871
EISBN: 978-1-62708-167-2
... at low power setting, transverse direction. Original magnification: 100×. (d) Microstructure at low power setting, transverse direction. Original magnification: 400× Fig. 15 (a) Planetary ring gear with induction-hardened teeth. (b) Microstructure at tooth root with SAE 1045 steel. Original...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005952
EISBN: 978-1-62708-168-9
... in heat treatment from heat to heat. These engineering needs relate primarily to properties of the surface and immediate subsurface zones of the gear tooth. Mechanical properties at the radial centerline of the tooth are of little concern because stresses are low, resembling those at the neutral axis...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... lubrication or fit can cause wear that distorts components. Grain flow is often a feature of wear, but in very hard components, the grain flow may be difficult to discern ( Fig. 29 ). Fig. 29 (a) Phosphor bronze worm gear with worn teeth. (b) Original shape of tooth. Ferric chloride etch. (c) Worn...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006354
EISBN: 978-1-62708-192-4
...Abstract Abstract This article is concerned with gear tooth failures influenced by friction, lubrication, and wear, and especially those failure modes that occur in wind-turbine components. It provides a detailed discussion on wear (including adhesion, abrasion, polishing, fretting...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005987
EISBN: 978-1-62708-168-9
... as a function of carbon content for 3% Ni-Cr steel. Source: Ref 9 Fig. 2 Gear profile. HPSTC, highest point of single tooth contact; LPSTC, lowest point of single tooth contact. Source: Ref 3 Fig. 20 Variations in distortion during carburizing of a pinion gear due to variations in alloy...
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
... ( Fig. 3 ). The mean number of cycles, N 50 , for a failure probability of 50% and a total of m tests on the stress level S a i with single results N i is given by the equation: (Eq 6) lg N 5 0 = 1 / m Σ lg N i The scattering is defined by the standard...
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
... Fig. 7 Unetched metallographic cross section through gear tooth showing subsurface fatigue crack formed by rolling contact. 132×. Source: Ref 12 Fig. 8 Unetched metallographic cross section through hardened steel roller test specimen with sliding plus rolling contact (sliding to left...
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
... fatigue crack initiation. Source: Ref 12 Fig. 7 Unetched metallographic cross section through gear tooth showing subsurface fatigue crack formed by rolling contact. Original magnification: 132×. Source: Ref 12 Fig. 8 Unetched metallographic cross section through hardened steel...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... with a lateral force (upper arrow). Source: Ref 4 . (b) Medium-length tube tested to buckling instability on special-purpose-designed test machine. Source: Ref 3 Fig. 5 Diagram of the temperature dependence of elastic, plastic, and fracture behavior of polycrystalline materials that do not exhibit...
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006358
EISBN: 978-1-62708-192-4
... with the pitch circle, there is pure or nearly pure rolling (depending on the accuracy of gear alignment or lateral vibration). Past this point, slip again occurs between tooth surfaces; it reaches its second maximum just at the point where the surfaces separate. Slip can result in scuffing or adhesive wear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003573
EISBN: 978-1-62708-180-1
.... Fig. 7 Comparison of longitudinal profiles of an 1138 steel shotgun barrel before and after testing. 1000 rounds of a new type of ammunition were fired in the test. (a) Inside diameter. (b) Outside diameter Fig. 8 Two spiral power springs from a textile machine. Spring at left...