Effect of water exposure on the fracture toughness and flexure strength of a dental glass

2001 ◽  
Vol 17 (4) ◽  
pp. 367-371 ◽  
Author(s):  
Susanne S. Scherrer ◽  
Isabelle L. Denry ◽  
H.W. Anselm Wiskott ◽  
Urs C. Belser
Keyword(s):  
Fracture Toughness ◽  
Flexure Strength ◽  
Water Exposure ◽  
Effect Of Water

Effect of Sintering Temperature on Microstructure and Properties of VС/Fe Composite

2012 ◽  
Vol 430-432 ◽  
pp. 978-983
Author(s):  
Guo Jun Zhang ◽  
Zhi Ping Sun ◽  
Li Yan Zou
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Sintering Temperature ◽  
Growth Trend ◽  
Flexure Strength ◽  
Microstructure And Properties ◽  
Whole Process ◽  
Relationship Of ◽  
The Relationship ◽  
Composite Samples

VC/Fe composite samples were fabricated by sintering at 1050, 1100 and 1150°C in vacuum. The microstructure and mechanical properties of samples were examined, and the relationship of structure and mechanical properties for VC/Fe composite sintered at different temperature were studied. The results show that fracture toughness, hardness and density is increasing obviously at 1050-1100°Cwith the increasing sintering temperature, but the growth trend increases slowly at 1100-1150°C; in whole process with temperature increased, Flexure strength heighten trend obviously. The microstructure of VC/Fe composite changed from particles piled up together to the microstructure particles closely, VC particles set gradually into Fe with temperature increased, and the gap reduced gradually.

Nickel-Alumina Composites: In Situ Synthesis by a Displacement Reaction, and Mechanical Properties

1994 ◽  
Vol 365 ◽  
Author(s):  
Steven A. Jones ◽  
James M. Burlitch ◽  
Ersan Üstündag ◽  
Jeannie Yoo ◽  
Alan T. Zehnder
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Elastic Constants ◽  
High Performance ◽  
In Situ Synthesis ◽  
Displacement Reaction ◽  
Ductile Phase ◽  
Flexure Strength ◽  
Alumina Composites

ABSTRACTNickel-alumina composites have the potential to be high performance materials. Alumina, with its excellent oxidation resistance, combined with a ductile phase such as nickel may provide a tough material with a lower density and higher Young's modulus, overall, a higher specific modulus than typical Superalloys. Dense, interpenetrating Ni-Al2O3 composites were synthesized using a displacement reaction between NiO and aluminum. The resulting composites were characterized in terms of their mechanical properties such as hardness, flexure strength, fracture toughness and elastic constants. The synthesis, characterization, and mechanical properties, as well as the effect of the interpenetrating microstructure on the toughening mechanisms and other properties will be discussed.

Mechanical Properties of Zirconia/Alumina Nano-Composite after Soaking in Various Water-Based Conditions

2006 ◽  
Vol 309-311 ◽  
pp. 1219-1222 ◽  
Author(s):  
Seiji Ban ◽  
Masahiro Nawa ◽  
Y. Suehiro ◽  
H. Nakanishi
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tetragonal Zirconia ◽  
Flexure Strength ◽  
Nano Composite ◽  
Dental Restorations ◽  
Dental Restoratives ◽  
All Ceramic ◽  
Water Based ◽  
Before And After

Yttria stabilized tetragonal zirconia polycrystals (Y-TZP) have been applied to dental crown and bridges. Whereas, to further improve its mechanical strength, the zirconia/alumina nano-composite stabilized with cerium oxide (Ce-TZP/Al2O3 nano-composite) was developed. In the present study, biaxial flexure strength, fracture toughness and hardness were determined before and after soaking in water-based conditions and the possibility of application to all ceramic dental restorations was discussed. In comparison to Y-TZP, Ce-TZP/Al2O3 nano-composite has quite high flexure strength and fracture toughness along with satisfied durability for LTAD in various water-based conditions encountered in dentistry. Therefore, it is concluded that the nano-composite can be safely applied to dental restoratives such as all-ceramic bridges.

Improvement of flexure strength and fracture toughness in alumina matrix composites reinforced with carbon nanotubes

2009 ◽  
Vol 517 (1-2) ◽  
pp. 293-299 ◽  
Author(s):  
Sung Wan Kim ◽  
Won Sub Chung ◽  
Kee-Sun Sohn ◽  
Chang-Young Son ◽  
Sunghak Lee
Keyword(s):  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
Matrix Composites ◽  
Alumina Matrix ◽  
Flexure Strength

scholarly journals Effect of Water Exposure on Contact Lens Storage Case Contamination in Soft Lens Wearers

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Memoona Arshad ◽  
Nicole Carnt ◽  
Jacqueline Tan ◽  
Fiona Stapleton
Keyword(s):  
Contact Lens ◽  
Water Exposure ◽  
Effect Of Water ◽  
Contact Lens Storage Case

scholarly journals The Effect of Water Absorption on Mode I Intterlaminar Fracture Toughness of Aramid Fibre Reinforced Plastics

1999 ◽  
Vol 8 (2) ◽  
pp. 096369359900800
Author(s):  
Hideki Sembokuya ◽  
Masaki Hojo ◽  
Kiyoshi Kemmochi
Keyword(s):  
Fracture Toughness ◽  
Water Absorption ◽  
Aramid Fibre ◽  
Mode I ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Reinforced Plastics ◽  
Effect Of Water

Mode I interlaminar fracture toughness tests were carried out for aramid fibre reinforced epoxy laminates. Specimens immersed in water were also tested for comparison. The effect of water absorption on interlaminar fracture toughness was small for the aramid/epoxy laminates used in this study.

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