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Questions
TOUGHNESS MEASUREMENT IN DIRECT RESIN COMPOSITES USING QUANTITATIVE FRACTOGRAPHIC ANALYSIS

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Brendan Angus is a Masters Student at the University of Florida pursuing a degree in Materials Science and Engineering . He earned his Bachelor ’ s degree in Materials Science and Engineering at the University of Florida in May of 2017 . His research focuses on the fractography of dental composites .

Questions

Brendan M . ANGUS
BS , Research Assistant Materials Science and Engineering Department
College of Engineering , University of Florida Gainesville , FL , USA
1 . The fracture toughness of the resin composites was measured using :
qa . qb . qc .
Single edge notch test ;
Compact tension test ;
Quantitative fractography ;
qd .
Double torsion test .
2 . The elastic modulus was calculated using : qa . The slope of the stress-strain curve ; qb . The sonic modulus technique ; qc . Knoop indentation ; qd . Vickers indentation .
3 . The value for the fracture toughness found was : qa . In agreement with comparable studies ; qb . Lower than values found in comparable studies ; qc . Greater than values found in comparable studies ; qd . Not compared to values found in other studies .
4 . Quantitative fractography uses what measurements to calculate fracture toughness ? qa . Crack size and stress at failure ; qb . Crack size and elastic modulus ; qc . Elastic modulus and stress at failure ; qd . Stress at failure and Vickers hardness .

Original Article http :// prosthodontics . conferenceseries . com / scientific-program

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