Fracture mechanics-based estimation of fatigue lives of welded joints

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • R. Goyal
  • G. Glinka

Organisaatiot

  • John Deere India Private Limited
  • University of Waterloo

Kuvaus

The effects of the lack of penetration flaw and misalignment on fatigue life of cruciform welded joints made of low-alloy steel were studied experimentally and theoretically. It was found that two locations of fatigue fracture were possible under cyclic tension loading, depending on the relative magnitude of the misalignment. In the absence of misalignment, all fatigue failures occurred as a result of fatigue growth of cracks emanating from the weld root. In the presence of misalignment, fatigue life depended on the fatigue growth of cracks growing from the weld toe. It has been shown that the entire fatigue life can be modeled as a fatigue growth of cracks starting either from the weld toe or the weld root. The initial crack size was selected as a small crack characteristic for a given material, i.e., being dependent only on the material. The weight function method was used to calculate the required stress intensity factors.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut625-634
Sivumäärä10
JulkaisuWelding in the World
Vuosikerta57
Numero5
TilaJulkaistu - syyskuuta 2013
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 10328196