Fracture toughness improvement of zirconia based ceramics

2020 ◽  
Author(s):  
A. S. Buyakov ◽  
Yu. A. Mirovoy ◽  
S. P. Buyakova
Keyword(s):  
Fracture Toughness ◽  
Toughness Improvement

Comparison between Commercial and Synthesized Hyperbranched Polyesters Regarding Fracture Toughness of Epoxy Matrix

2015 ◽  
Vol 719-720 ◽  
pp. 110-113
Author(s):  
Thatiane Brocks ◽  
Veronica Ambrogi ◽  
Maria Odila Hilário Cioffi
Keyword(s):  
Fracture Toughness ◽  
Epoxy Matrix ◽  
Impact Resistance ◽  
Thermomechanical Properties ◽  
Weight Percentage ◽  
Hyperbranched Polyesters ◽  
Hyperbranched Poly ◽  
Sem Morphology ◽  
Toughness Improvement ◽  
Toughening Agent

A hyperbranched poly (butylene adipate) (HPBA) polymer was compared with a commercial dendritic polyol (Boltorn H311) as toughening agent for a commercial one-part epoxy resin, Cycom 890 RTM. Both modifiers were added in a weight percentage 1, 3, 5 and 10 %. Blends obtained were characterized through DMA and impact resistance (KIC). SEM morphology were also evaluated. The toughness improvement was achieved without substantial impairment on thermomechanical properties. Fractography analysis has evidenced the fracture standard changing from brittle to ductile by modifiers addition.

Fracture toughness improvement of epoxy resins with short carbon fibers

2014 ◽  
Vol 20 (4) ◽  
pp. 1220-1222 ◽  
Author(s):  
Wei Dong ◽  
Heng-Chang Liu ◽  
Soo-Jin Park ◽  
Fan-Long Jin
Keyword(s):  
Fracture Toughness ◽  
Carbon Fibers ◽  
Epoxy Resins ◽  
Short Carbon ◽  
Toughness Improvement

Mechanisms of toughness improvement in Charpy impact and fracture toughness tests of non-heat-treating cold-drawn steel bar

2013 ◽  
Vol 571 ◽  
pp. 38-48 ◽  
Author(s):  
Hyunmin Kim ◽  
Minju Kang ◽  
Hyeok Jae Jung ◽  
Hyoung Seop Kim ◽  
Chul Min Bae ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Charpy Impact ◽  
Heat Treating ◽  
Steel Bar ◽  
Toughness Improvement

Hydroxyapatite Matrix Composites by Hot Isostatic Pressing: Part 1. Alumina Fibre Reinforced

2012 ◽  
Vol 15 ◽  
pp. 73-83 ◽  
Author(s):  
N. Ehsani ◽  
A.J. Ruys ◽  
C.C. Sorrell
Keyword(s):  
Fracture Toughness ◽  
Hot Isostatic Pressing ◽  
Decomposition Temperature ◽  
Pressureless Sintering ◽  
Matrix Composites ◽  
Natural Bone ◽  
Alumina Fibre ◽  
Al2o3 Fibre ◽  
Toughness Improvement

Fracture Toughness Improvement of the Hydroxyapatite Matrix Composite, to a Level Comparable to that of Natural Bone for in Vivo Applications, Was the Aim of the Present Work. Hot Isostatic Press Using a Graphite/stainless Steel Encapsulation System Enabled the Production of Fully Dense Decomposition-Free Hap with Toughness Improvements of: 2.4 Times (Al2O3 Fibres, Optimally 20 Vol%). Glass Encapsulation of Fibre-Reinforced Hap Resulted in Aeration from Sample Volatilization. Further, it Was Found that the Hap Decomposition Temperature Was Higher at 100 Mpa (the Hiping Pressure) than for Pressureless Sintering. the Toughening Effect of the Al2o3 Fibre Additive Induced Plastic Deformation and Ductile Fracture.

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