Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints
ABSTRACT This work carries out a theoretical study about the influence that profile geometry of the weld seam joints has on fatigue life. It is considered that SMAW butt-welded joints, 6 mm-A36 structural steel board, and the E6013 electrode. The influence of geometry is parametrized by the overweig...
Guardado en:
| Autores principales: | , , |
|---|---|
| Lenguaje: | English |
| Publicado: |
Universidad de Tarapacá.
2018
|
| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-33052018000400568 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:scielo:S0718-33052018000400568 |
|---|---|
| record_format |
dspace |
| spelling |
oai:scielo:S0718-330520180004005682019-02-04Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded jointsHernández Laguna,EdgarArzola de la Peña,NelsonAraque de los Ríos,Oscar Butt-welded joint fatigue semi-elliptical crack stress intensity factor fracture mechanics life assessment ABSTRACT This work carries out a theoretical study about the influence that profile geometry of the weld seam joints has on fatigue life. It is considered that SMAW butt-welded joints, 6 mm-A36 structural steel board, and the E6013 electrode. The influence of geometry is parametrized by the overweight weld and the radius of the weld toe. To do the latter, an arrangement of experiments were made into 3 levels for each factor. For the development of the current work some information obtained from experimental results was used (i.e., weld profile and mechanical properties). The geometry of one group of real weld seams is digitalized and simulated in the construction of 3D solid-models, while a superficial semi-elliptical crack is defined around the weld toe. By applying the Finite Element Method, analytical equations are obtained for the weld magnification factors (Mk). As main results of this work stand out, on the first hand, the strong influence that slub has on the fatigue life, an excess thickness means a reduction in the life forecast to even 42% for the welded joint. Secondly, the different behavior of strength intensity factor around the crack edge, which makes the crack become longer and narrower. The analytical equations for Mk can be utilized on life-management model for butt-welded joints.info:eu-repo/semantics/openAccessUniversidad de Tarapacá.Ingeniare. Revista chilena de ingeniería v.26 n.4 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-33052018000400568en10.4067/S0718-33052018000400568 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Butt-welded joint fatigue semi-elliptical crack stress intensity factor fracture mechanics life assessment |
| spellingShingle |
Butt-welded joint fatigue semi-elliptical crack stress intensity factor fracture mechanics life assessment Hernández Laguna,Edgar Arzola de la Peña,Nelson Araque de los Ríos,Oscar Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| description |
ABSTRACT This work carries out a theoretical study about the influence that profile geometry of the weld seam joints has on fatigue life. It is considered that SMAW butt-welded joints, 6 mm-A36 structural steel board, and the E6013 electrode. The influence of geometry is parametrized by the overweight weld and the radius of the weld toe. To do the latter, an arrangement of experiments were made into 3 levels for each factor. For the development of the current work some information obtained from experimental results was used (i.e., weld profile and mechanical properties). The geometry of one group of real weld seams is digitalized and simulated in the construction of 3D solid-models, while a superficial semi-elliptical crack is defined around the weld toe. By applying the Finite Element Method, analytical equations are obtained for the weld magnification factors (Mk). As main results of this work stand out, on the first hand, the strong influence that slub has on the fatigue life, an excess thickness means a reduction in the life forecast to even 42% for the welded joint. Secondly, the different behavior of strength intensity factor around the crack edge, which makes the crack become longer and narrower. The analytical equations for Mk can be utilized on life-management model for butt-welded joints. |
| author |
Hernández Laguna,Edgar Arzola de la Peña,Nelson Araque de los Ríos,Oscar |
| author_facet |
Hernández Laguna,Edgar Arzola de la Peña,Nelson Araque de los Ríos,Oscar |
| author_sort |
Hernández Laguna,Edgar |
| title |
Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| title_short |
Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| title_full |
Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| title_fullStr |
Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| title_full_unstemmed |
Fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| title_sort |
fracture mechanics assessment of fatigue semi-elliptical cracks in butt-welded joints |
| publisher |
Universidad de Tarapacá. |
| publishDate |
2018 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-33052018000400568 |
| work_keys_str_mv |
AT hernandezlagunaedgar fracturemechanicsassessmentoffatiguesemiellipticalcracksinbuttweldedjoints AT arzoladelapenanelson fracturemechanicsassessmentoffatiguesemiellipticalcracksinbuttweldedjoints AT araquedelosriososcar fracturemechanicsassessmentoffatiguesemiellipticalcracksinbuttweldedjoints |
| _version_ |
1714203461315198976 |