TY - JOUR
T1 - Crack propagation and toughening mechanisms of bio-inspired artificial spicules fabricated by additive manufacturing technique
AU - Sadeghzade, Sorour
AU - Emadi, Rahmatollah
AU - Salehi, Mehdi
AU - Tavangarian, Fariborz
AU - Ramini, Abdallah
N1 - Funding Information:
The authors acknowledge the support from Pennsylvania State University Commonwealth Campuses Research Collaboration Development Program. Data was generated through this support from the Materials Characterization Lab (MCL).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12
Y1 - 2020/12
N2 - In this study, for the first time, we produced synthetic spicule-inspired structures (SISs) by 3D printing technology to improve both strength and toughness of brittle rigid resin. The SISs with 0.375 mm cylinder wall thickness without cores showed an improvement of 21%, 1450%, 6000% and 68% in flexural strength, strain, specific toughness and buckling stress (compared to the control samples), respectively. The Shear test results showed that SISs, provide a structure with better dispersing stress. Changing the architecture of solid rods to spiculic structures led to stopping and deflecting the crack path, and subsequently prevented catastrophic failure in these structures. Therefore, SISs can offer a novel and promising approach to increase the strength and flexibility of these brittle materials.
AB - In this study, for the first time, we produced synthetic spicule-inspired structures (SISs) by 3D printing technology to improve both strength and toughness of brittle rigid resin. The SISs with 0.375 mm cylinder wall thickness without cores showed an improvement of 21%, 1450%, 6000% and 68% in flexural strength, strain, specific toughness and buckling stress (compared to the control samples), respectively. The Shear test results showed that SISs, provide a structure with better dispersing stress. Changing the architecture of solid rods to spiculic structures led to stopping and deflecting the crack path, and subsequently prevented catastrophic failure in these structures. Therefore, SISs can offer a novel and promising approach to increase the strength and flexibility of these brittle materials.
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U2 - 10.1016/j.tafmec.2020.102797
DO - 10.1016/j.tafmec.2020.102797
M3 - Article
AN - SCOPUS:85093655871
SN - 0167-8442
VL - 110
JO - Theoretical and Applied Fracture Mechanics
JF - Theoretical and Applied Fracture Mechanics
M1 - 102797
ER -