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Keywords: microcracks
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Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. October 2011, 133(4): 041001.
Published Online: October 13, 2011
... a microstructure’s fracture resistance. However, indirectly it may weaken a microstructure by favoring the formation of microcracks. Significantly higher crack formation in grain interior while lower interfacial energy dissipation in comparison to interfaces indicates overall lower fracture strength of grain...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. July 2011, 133(3): 031002.
Published Online: June 24, 2011
... of oxygen diffusivity and pressure factor. In the case of an existing surface microcrack, oxygen tends to accumulate around the crack tip due to the high stress level presented near the crack tip, leading to localized material embrittlement and promotion of rapid crack propagation. 10 08 2010 04...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. January 2011, 133(1): 011018.
Published Online: December 9, 2010
... for Tensile Properties of Polymer Matrix Composite Materials. 08 06 2010 08 12 2010 09 12 2010 09 12 2010 elastic constants filled polymers finite element analysis fracture mechanics glass fibre reinforced plastics interface structure microcracks tensile strength...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2009, 131(2): 021009.
Published Online: March 9, 2009
... 05 12 2008 09 03 2009 fatigue microcracks stress-strain relations torsion multiaxial fatigue strain-based approach critical plane In many engineering applications mechanical components are subjected to complex in-service time-variable loading resulting in multiaxial...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2008, 130(2): 021012.
Published Online: March 13, 2008
...D. Kumar; T. R. Bieler; P. Eisenlohr; D. E. Mason; M. A. Crimp; F. Roters; D. Raabe Simkin et al. (2003, “A Factor to Predict Microcrack Nucleation at Gamma-Gamma Grain Boundaries in TiAl,” Scr. Mater., 49(2), 149–154) proposed a relationship for predicting crack initiation in γ - Ti Al...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. April 2006, 128(2): 225–233.
Published Online: June 21, 2005
..., shows an elastoplastic response. Microcracking at the corners of sharp indentations was not observed in amorphous nanoporous films, and rarely in harder, crystalline nanoporous films. High-resolution scanning electron microscopy revealed a collapse of the nanoporous structure beneath the indentor tip...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. July 2005, 127(3): 337–350.
Published Online: March 22, 2005
...–matrix debonding using the modified Mori–Tanaka model. The associated damage variables are defined, and the stiffness reduction law dependent on these variables is established. The stiffness of a random fiber composite containing random matrix microcracks and imperfect interfaces is then obtained from...
Journal Articles
Article Type: Research Papers
J. Eng. Mater. Technol. July 2005, 127(3): 318–324.
Published Online: March 10, 2005
....’s unit cell model ( 20 ) for brittle fracture of particles embedded in a ductile matrix, Weibull-type fracture probability was used to describe the damage probability. 28 09 2004 10 03 2005 particle reinforced composites Monte Carlo methods crystal microstructure microcracks...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2004, 126(1): 62–69.
Published Online: January 22, 2004
... of polycrystals under different loading conditions. slip viscoplasticity Young's modulus Poisson ratio work hardening fatigue cracks microcracks austenitic stainless steel nickel alloys 10 February 2003 23 July 2003 22 01 2004 Contributed by the Materials Division...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. April 2003, 125(2): 176–182.
Published Online: April 4, 2003
... propagates by the growth of voids or microcracks ahead of the main crack and coalescence with the main crack. The energy release rate G 0 with phase angle ψ = 0 for type A coating and type B coating was, respectively, 14.54 ∼ 25.88 J / m 2 and 11.88 ∼ 16.21 J / m 2 . The corresponding interface fracture...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2003, 125(1): 38–43.
Published Online: December 31, 2002
... these defects grow, join and build a crack process zone until complete rupture will finally occur. This zone is bounded by the fictitious crack tip and the real crack tip and shall be called the damaged bond zone. In this area which contains a reasonable amount of microcracks the contact is still governed...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2003, 125(1): 65–74.
Published Online: December 31, 2002
...Xu-Dong Li Computer experiments were performed on simulated polycrystalline material samples that possess locally anisotropic microstructures to investigate stress intensity factor ( K ) variations and anisotropy along fronts of microcracks of different sizes. The anisotropic K , arising from...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. October 2000, 122(4): 469–473.
Published Online: May 12, 2000
...D. L. Ball; W. S. Chan The ply constitutive relations of an energy-based model for distributed microcracking in continuous fiber reinforced metal matrix composites are presented. Simple models for damage progression are used in conjunction with these damage dependent constitutive relations to allow...
Journal Articles
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2000, 122(1): 74–79.
Published Online: May 3, 1999
... compared with other heat treatment conditions. Typical damage modes of Ti MMC’s, such as fiber/matrix debonding and matrix microcracking, were seen in all heat treatments. A micromechanics model based on the Mori-Tanaka averaging scheme was implemented to simulate the effects of micro-cracking induced...