TY - JOUR
T1 - Investigation of In-service Creep Failures of Aircraft Ti-6Al-4V Bolts
AU - Spyroglou, Iordanis
AU - Kourousis, Kyriakos
AU - Koutsomichalis, Angelos
N1 - Publisher Copyright:
© The Authors, published by EDP Sciences, 2018.
PY - 2018/8/7
Y1 - 2018/8/7
N2 - Three Ti-6Al-4V bolts from mid-life jet aircraft failed during service operation. Each of the failed bolts were installed on a landing gear component. Metallurgical failure analysis indicated that the fracture mechanism is low temperature creep, possibly resulting from a sustained tension load over a long time. Visual inspection revealed ductile fracture morphology with no macroscopic deformation or corrosion. For all bolts fracture occurred close to the root at the first pitches of the thread. Scanning Electron Microscope (SEM) analysis revealed dimple morphologies with micro-void coalescence. Energy Dispersive X-Ray (EDX) analysis did not reveal any material deficiency that would have precipitated failure.
AB - Three Ti-6Al-4V bolts from mid-life jet aircraft failed during service operation. Each of the failed bolts were installed on a landing gear component. Metallurgical failure analysis indicated that the fracture mechanism is low temperature creep, possibly resulting from a sustained tension load over a long time. Visual inspection revealed ductile fracture morphology with no macroscopic deformation or corrosion. For all bolts fracture occurred close to the root at the first pitches of the thread. Scanning Electron Microscope (SEM) analysis revealed dimple morphologies with micro-void coalescence. Energy Dispersive X-Ray (EDX) analysis did not reveal any material deficiency that would have precipitated failure.
UR - http://www.scopus.com/inward/record.url?scp=85053210413&partnerID=8YFLogxK
U2 - 10.1051/matecconf/201818804008
DO - 10.1051/matecconf/201818804008
M3 - Conference article
AN - SCOPUS:85053210413
SN - 2261-236X
VL - 188
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
M1 - 04008
T2 - 5th International Conference of Engineering Against Failure, ICEAF-V 2018
Y2 - 20 June 2018 through 22 June 2018
ER -