TY  - JOUR
T1  - Structural Integrity of Welded Joints Subject to Fatigue Loads
AU - Oscar, Araque de los Rios AU - Nelson, Arzola de la Pena 
JO  - Journal of Engineering and Applied Sciences
VL  - 13
IS  - 10
SP  - 3444
EP  - 3449
PY  - 2018
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2018.3444.3449
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2018.3444.3449
KW  - Cooling
KW  -welding discontinuities
KW  -fatigue
KW  -structural integrity
KW  -ultrasonic
KW  -SMAW
AB  - This research presents a theoretical-experimental study about the structural integrity of welded joints
under cyclic loads taking into account the influence of initial crack flaws and the cooling rate by the thermal
cycle as it relates to this research, steel ASTM A36 HR was the base material and as filler material the electrode
E6013 using Shielded Metal Arc Welding (SMAW) as welding procedure. The research topic was approached
from an integral perspective, analyzing the behavior of the welded joint from its elaboration phase until its final
crack by fatigue with the aim to relate its fatigue life with the experimental factors: load relationship, leg of fillet
weld and cooling environment. The welded casting was subjected to an analysis that included the
micro-structural and ultrasonic analysis. Also, useful information about the mechanic and fracture-mechanic
behavior of the welded joint was gathered throughout tests of axial fatigue and its later monitoring by Scanning
Electron Microscope (SEM) in the crack tip and was related with the presence of discontinuities in the welded
joint. A high degree of correspondence was reached between the ultrasonic testing and the experimental results.
ER  -