Effect of Incremental Displacement on the Fracture Resistance Curve of Nuclear Piping Materials under Reverse Cyclic Loading

An example of samples with a cellular architecture, obtained by selective laser melting, is used to study the influence of the building direction of cellular objects on the characteristics of fracture under cyclic loading. The origin of their fracture has been revealed. The mechanism providing increased fatigue fracture resistance of objects which, along with the cellular structure, have anisotropy of properties due to the technological features of their production has been determined.

Download Full-text

Fracture resistance curve for single edge notched tension specimens under low cycle actions

Engineering Fracture Mechanics ◽

10.1016/j.engfracmech.2019.02.001 ◽

2019 ◽

Vol 211 ◽

pp. 47-60 ◽

Cited By ~ 6

Author(s):

Tianyao Liu ◽

Xudong Qian ◽

Wei Wang ◽

Yiyi Chen

Keyword(s):

Fracture Resistance ◽

Resistance Curve ◽

Single Edge

Download Full-text

Influence of bonding surface and bonding methods on the fracture resistance and survival rate of full-coverage occlusal veneers made from lithium disilicate ceramic after cyclic loading

Dental Materials ◽

10.1016/j.dental.2019.07.001 ◽

2019 ◽

Vol 35 (10) ◽

pp. 1351-1359 ◽

Cited By ~ 3

Author(s):

Anna Krummel ◽

Anne Garling ◽

Martin Sasse ◽

Matthias Kern

Keyword(s):

Survival Rate ◽

Cyclic Loading ◽

Fracture Resistance ◽

Lithium Disilicate ◽

Full Coverage ◽

Bonding Surface

Download Full-text

Fracture Resistance of Monolithic Zirconia Crowns in Implant Prostheses in Patients with Bruxism

Materials ◽

10.3390/ma12101623 ◽

2019 ◽

Vol 12 (10) ◽

pp. 1623 ◽

Cited By ~ 3

Author(s):

Ting-Hsun Lan ◽

Chin-Yun Pan ◽

Pao-Hsin Liu ◽

Mitch M. C. Chou

Keyword(s):

Cyclic Loading ◽

Computer Aided Design ◽

Fracture Resistance ◽

Testing Machine ◽

Von Mises Stress ◽

High Fracture ◽

Computer Aided ◽

Zirconia Crowns ◽

Monolithic Zirconia ◽

Von Mises

The aim of this study is to determine the minimum required thickness of a monolithic zirconia crown in the mandibular posterior area for patients with bruxism. Forty-nine full zirconia crowns, with seven different occlusal thicknesses of 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0 mm, were made by using a computer-aided design/computer-aided manufacturing system (CAD/CAM). Seven crowns in each group were subjected to cyclic loading at 800 N and 5 Hz in a servohydraulic testing machine until fracture or completion of 100,000 cycles. Seven finite element models comprising seven different occlusal thicknesses of 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0 mm were simulated using three different loads of vertical 800 N, oblique 10 degrees 800 N, and vertical 800 N + x N torque (x = 10, 50, and 100). The results of cyclic loading tests showed that the fracture resistance of the crown was positively associated with thickness. Specimen breakage differed significantly according to the different thicknesses of the prostheses (p < 0.01). Lowest von Mises stress values were determined for prostheses with a minimal thickness of 1.0 mm in different loading directions and with different forces. Zirconia specimens of 1.0 mm thickness had the lowest stress values and high fracture resistance and under 800 N of loading.

Download Full-text