TY - JOUR
T1 - A micromechanical fracture analysis to investigate the effect of healing particles on the overall mechanical response of a self-healing particulate composite
AU - Ponnusami, Sathiskumar A.
AU - Krishnasamy, Jayaprakash
AU - Turteltaub, Sergio
AU - van der Zwaag, Sybrand
PY - 2019
Y1 - 2019
N2 - A computational fracture analysis is conducted on a self-healing particulate composite employing a finite element model of an actual microstructure. The key objective is to quantify the effects of the actual morphology and the fracture properties of the healing particles on the overall mechanical behaviour of the (MoSi2) particle-dispersed Yttria Stabilised Zirconia (YSZ) composite. To simulate fracture, a cohesive zone approach is utilised whereby cohesive elements are embedded throughout the finite element mesh allowing for arbitrary crack initiation and propagation in the microstructure. The fracture behaviour in terms of the composite strength and the percentage of fractured particles is reported as a function of the mismatch in fracture properties between the healing particles and the matrix as well as a function of particle/matrix interface strength and fracture energy. The study can be used as a guiding tool for designing an extrinsic self-healing material and understanding the effect of the healing particles on the overall mechanical properties of the material.
AB - A computational fracture analysis is conducted on a self-healing particulate composite employing a finite element model of an actual microstructure. The key objective is to quantify the effects of the actual morphology and the fracture properties of the healing particles on the overall mechanical behaviour of the (MoSi2) particle-dispersed Yttria Stabilised Zirconia (YSZ) composite. To simulate fracture, a cohesive zone approach is utilised whereby cohesive elements are embedded throughout the finite element mesh allowing for arbitrary crack initiation and propagation in the microstructure. The fracture behaviour in terms of the composite strength and the percentage of fractured particles is reported as a function of the mismatch in fracture properties between the healing particles and the matrix as well as a function of particle/matrix interface strength and fracture energy. The study can be used as a guiding tool for designing an extrinsic self-healing material and understanding the effect of the healing particles on the overall mechanical properties of the material.
KW - cohesive elements
KW - fracture mechanism
KW - fracture properties
KW - healing particles
KW - self-healing material
KW - thermal barrier coatings
UR - http://www.scopus.com/inward/record.url?scp=85050108482&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:54fca949-53d5-4bec-b9d6-545b6e3d0d65
U2 - 10.1111/ffe.12929
DO - 10.1111/ffe.12929
M3 - Article
AN - SCOPUS:85050108482
VL - 42
SP - 533
EP - 545
JO - Fatigue & Fracture of Engineering Materials and Structures
JF - Fatigue & Fracture of Engineering Materials and Structures
SN - 8756-758X
IS - 2
ER -