Effect of Miniature Cracks on the Fracture Strength and Strain of Tensile Armour Wires
Tensile armour wires provide a flexible pipe's
resistance to longitudinal stresses. Flexible pipe manufacturers need
to know the effect of defects such as scratches and cracks, with
dimensions less than 0.2mm which is the limit of the current nondestructive
detection technology, on the fracture stress and fracture
strain of the wire for quality assurance purposes. Recent research
involving the determination of the fracture strength of cracked wires
employed laboratory testing and classical fracture mechanics
approach using non-standardised fracture mechanics specimens
because standard test specimens could not be manufactured from the
wires owing to their sizes. In this work, the effect of miniature
cracks on the fracture properties of tensile armour wires was
investigated using laboratory and finite element tensile testing
simulations with the phenomenological shear fracture model. The
investigation revealed that the presence of cracks shallower than
0.2mm is worse on the fracture strain of the wire.
[1] Mahmoud, k.m. (2007), fracture strength for a high strength steel bridge
cable wire with a surface crack, theoretical and applied fracture
mechanics, 48 (2), pages 152-160.
[2] Toribio, j., valiente a. (2006), failure analysis of cold drawn eutectoid
steel wires for prestressed concrete, engineering failure analysis, 13 (3),
pages 301-311.
[3] Toribio, j., valiente a. (2004), approximate evaluation of directional
toughness in heavily drawn pearlitic steels. Materials letters, 58 (27-28),
pages 3514-3517.
[4] Pardoen, t., scheyvaertsa, f., simara, a., tekoglu, c.,and onck p. (2010),
multiscale modeling of ductile failure in metallic alloys. Comptes rendus
physique, 11 (3-4), pages 326-345.
[5] Dunand, m., mohr d., (2010), hybrid experimental-numerical analysis of
basic ductile fracture experiments for sheet metals. International journal
of solids and structures, 47(9), pages 1130-1143.
[6] Simulia, 2007. Abaqus documentation, abaqus incorporation, dassault
systemes.
[7] Adewole, k .k., julia m.r., and bull s.j., determination of the appropriate
fracture mechanism for flexible pipe tensile armour wires using the
micro-mechanism based fracture mechanics. Proceeding of aes-
atema'2011 ninth international conference on advances and trends in
engineering materials and their applications, montreal, canada, august 01 -
05, 2011, pages 147-154.
[8] Cabezas, e.e., and celentano, d.j., 2004. Experimental and numerical
analysis of the tensile test using sheet specimens. Finite elements in
analysis and design, vol 40, 2004, pages 555-575.
[9] Dieter, g.e., 1998. Mechanical metallurgy. Mcgraw-hill book company,
isbn 0-07-084187-x, page 659.
[1] Mahmoud, k.m. (2007), fracture strength for a high strength steel bridge
cable wire with a surface crack, theoretical and applied fracture
mechanics, 48 (2), pages 152-160.
[2] Toribio, j., valiente a. (2006), failure analysis of cold drawn eutectoid
steel wires for prestressed concrete, engineering failure analysis, 13 (3),
pages 301-311.
[3] Toribio, j., valiente a. (2004), approximate evaluation of directional
toughness in heavily drawn pearlitic steels. Materials letters, 58 (27-28),
pages 3514-3517.
[4] Pardoen, t., scheyvaertsa, f., simara, a., tekoglu, c.,and onck p. (2010),
multiscale modeling of ductile failure in metallic alloys. Comptes rendus
physique, 11 (3-4), pages 326-345.
[5] Dunand, m., mohr d., (2010), hybrid experimental-numerical analysis of
basic ductile fracture experiments for sheet metals. International journal
of solids and structures, 47(9), pages 1130-1143.
[6] Simulia, 2007. Abaqus documentation, abaqus incorporation, dassault
systemes.
[7] Adewole, k .k., julia m.r., and bull s.j., determination of the appropriate
fracture mechanism for flexible pipe tensile armour wires using the
micro-mechanism based fracture mechanics. Proceeding of aes-
atema'2011 ninth international conference on advances and trends in
engineering materials and their applications, montreal, canada, august 01 -
05, 2011, pages 147-154.
[8] Cabezas, e.e., and celentano, d.j., 2004. Experimental and numerical
analysis of the tensile test using sheet specimens. Finite elements in
analysis and design, vol 40, 2004, pages 555-575.
[9] Dieter, g.e., 1998. Mechanical metallurgy. Mcgraw-hill book company,
isbn 0-07-084187-x, page 659.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:57593", author = "Kazeem K. Adewole and Steve J. Bull", title = "Effect of Miniature Cracks on the Fracture Strength and Strain of Tensile Armour Wires", abstract = "Tensile armour wires provide a flexible pipe's
resistance to longitudinal stresses. Flexible pipe manufacturers need
to know the effect of defects such as scratches and cracks, with
dimensions less than 0.2mm which is the limit of the current nondestructive
detection technology, on the fracture stress and fracture
strain of the wire for quality assurance purposes. Recent research
involving the determination of the fracture strength of cracked wires
employed laboratory testing and classical fracture mechanics
approach using non-standardised fracture mechanics specimens
because standard test specimens could not be manufactured from the
wires owing to their sizes. In this work, the effect of miniature
cracks on the fracture properties of tensile armour wires was
investigated using laboratory and finite element tensile testing
simulations with the phenomenological shear fracture model. The
investigation revealed that the presence of cracks shallower than
0.2mm is worse on the fracture strain of the wire.", keywords = "Cracks, Finite Element Simulations, Fracture
Mechanics, Shear Fracture Model, Tensile Armour Wire", volume = "6", number = "1", pages = "186-5", }