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contact fatigue

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Image
Published: 01 September 2008
Fig. 27 Schematic representation of contact fatigue under pure rolling between two surfaces More
Image
Published: 01 September 2008
Fig. 28 Damage by contact fatigue in rolling combined with sliding conditions in gears produced from a quenched and tempered AISI 8620 carburized steel. (a) Transversal section. (b) Frontal view from a formed cavity More
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Published: 01 September 2008
Fig. 65 Contact fatigue strength of carburized 25Kh2GHTA steel (tempered at 180 to 200 °C) More
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Published: 01 September 2005
Fig. 24 Cleanness and rolling contact fatigue life improvements in carburized steels as steelmaking practices have changed. Source: Ref 57 More
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Published: 01 September 2005
Fig. 19 Rolling-contact fatigue in a gear tooth section. Crack origin subsurface. Progression was parallel to surface and inward away from surface. Not etched. Original magnification at 60× More
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Published: 01 September 2005
Fig. 20 Rolling-contact fatigue in a gear tooth section. Crack origin subsurface. Progression was parallel with surface, inward, and finally to the surface to form a large pit or spall. Not etched. Original magnification at 60× More
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Published: 01 September 2005
Fig. 21 Rolling-contact fatigue in a gear tooth section distinguished by subsurface shear parallel to surface. Note the undisturbed black oxides at the surface, indicating no surface-material movement. Not etched. Original magnification at 125× More
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Published: 01 September 2005
Fig. 3 Schematic of a rolling/sliding contact fatigue (RCF) test More
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Published: 01 December 1999
Fig. 4.20 Rolling contact fatigue plots for carburized and hardened 3Ni-Cr steel discs. S H = (lb/in. of face width)/(relative radius of curvature) More
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Published: 01 December 1999
Fig. 4 Effect of core strength and case depth on the rolling-contact fatigue limit of gear steels. Tests involved two 4 in. disks driven by a 2 in. roller. Test piece may have been either one of the disks or the roller. Relative radius of curvature, 2/3. SH units = lb/in. of face width divided More
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Published: 01 December 1999
Fig. 1.25 Contact fatigue life in relation to the amount of material removed from carburized SAE 8620 samples prior to testing. The hatched band represents the depth of internal oxidation beneath the original surface of specimens. Source: Ref 36 More
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Published: 01 December 1999
Fig. 3.18 Effect of carbide networks on the contact-fatigue strength of case-hardened steels. Case depths, 1.1 ± 0.1 mm (also see Fig. 4.21 ). Source: Ref 26 More
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Published: 01 December 1999
Fig. 3.19 The contact-fatigue wear resistance of different samples. Source: Ref 20 More
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Published: 01 December 1999
Fig. 3.20 The contact-fatigue strength of carburized 25Kh2GHTA steel (tempered at 180 to 200 °C). Source: Ref 27 More
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Published: 01 June 1985
Fig. 4-17. Gear tooth section, 100×. Unetched. Rolling contact fatigue. Crack origin subsurface. Progression parallel to surface and inward away from surface. More
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Published: 01 June 1985
Fig. 4-18. Gear tooth section, 100×. Unetched. Rolling contact fatigue. Crack origin subsurface. Progression parallel with surface, inward, and finally to surface to form a large pit or spall. More
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Published: 01 June 1985
Fig. 4-19. Gear tooth section, 200×. unetched. Rolling contact fatigue distinguished by subsurface shear parallel to surface. Note the undisturbed black grain oxides at the surface, indicating no surface material movement. More
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Published: 01 June 1985
Fig. 5-14. Spiral bevel tooth, 2×. Pitting and spalling due to rolling contact fatigue in a concentrated area (see Fig. 4-16 ) as a designed failure. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420085
EISBN: 978-1-62708-452-9
... Abstract This chapter presents a detailed discussion on the three most frequent gear failure modes. These include tooth bending fatigue, tooth bending impact, and abrasive tooth wear. Tooth bending fatigue includes surface contact fatigue (pitting), rolling contact fatigue, contact fatigue...
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Published: 01 December 1999
Fig. 8.25 Relationship between fatigue limit at 10 7 cycles and contact stress for case-hardened 20Kh2N4A test pieces (7.5 mm diam, 1.1 to 1.5 mm case depth). Source: Ref 27 More