Initiation and Growth of Standing Contact Fatigue Cracks
2000 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 65, no 1, 89-106 p.Article in journal (Refereed) Published
In the standing contact fatigue test an indenter subjects a case hardened test specimen to a stationary but pulsating contact load. Two crack types appearing in the test specimen are investigated. The ring/cone cracks are surface cracks that circumvent the contact area, whereas the lateral cracks are horizontal sub-surface cracks. The initial crack lengths are determined for both crack types. Actual crack paths from experiments are evaluated numerically. For each crack tip position, stress intensity factors are determined from J(1) and J(2) integrals. The stress intensity ranges are compared to criteria for fatigue crack propagation rate and direction. As the cracks propagate, they orient in the direction with mode II loading close to zero.
Place, publisher, year, edition, pages
2000. Vol. 65, no 1, 89-106 p.
Contact fatigue, Surface crack, Sub-surface crack, Mixed mode fatigue, Fatigue crack growth, J-integral
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-12308DOI: 10.1016/S0013-7944(99)00108-3ISI: 000085867200006OAI: oai:DiVA.org:kth-12308DiVA: diva2:309568
QC 201004072010-04-072010-04-072011-02-07Bibliographically approved