Inclined standing contact fatigue
2003 (English)In: Fatigue & Fracture of Engineering Materials & Structures, ISSN 8756-758X, E-ISSN 1460-2695, Vol. 26, no 7, 589-602 p.Article in journal (Refereed) Published
An experimental method is presented, in which a sphere is repeatedly pressed against a surface with an inclined contact load. The method is a development of the normally loaded standing contact fatigue test. Experiments are performed for three inclination angles below the angle of friction and the results are compared to those of the normally loaded standing contact fatigue test. The influence of tangential load on endurance limit load, number of cycles to crack initiation, contact mark appearance and crack behaviour in the surface as well as in cut views are evaluated. The surface crack behaviour outside the contact mark is analysed based on the cyclic contact stresses in the test specimen. The trajectories of the largest principal stresses are followed in both the surface view and in the cut view on the symmetry plane. These stress trajectories are compared to the experimental crack results. The connection between the inclined standing contact fatigue cracks and surface distress micro-cracks is also discussed.
Place, publisher, year, edition, pages
2003. Vol. 26, no 7, 589-602 p.
contact fatigue, crack path, endurance limit, inclined indentation, surface crack, surface distress, cracks
IdentifiersURN: urn:nbn:se:kth:diva-22608ISI: 000183686400003OAI: oai:DiVA.org:kth-22608DiVA: diva2:341306
QC 201005252010-08-102010-08-10Bibliographically approved