scholarly journals Determination of size-independent specific fracture energy of concrete from three-point bend and wedge splitting tests

2003 ◽  
Vol 55 (2) ◽  
pp. 133-141 ◽  
Author(s):  
H. M. Abdalla ◽  
B. L. Karihaloo
Keyword(s):  
Fracture Energy ◽  
Specific Fracture Energy ◽  
Point Bend ◽  
Specific Fracture ◽  
Wedge Splitting

scholarly journals Wedge-Splitting Test on Carbon-Containing Refractories at High Temperatures

2019 ◽  
Vol 9 (16) ◽  
pp. 3249 ◽  
Author(s):  
Stückelschweiger ◽  
Gruber ◽  
Jin ◽  
Harmuth
Keyword(s):  
Tensile Strength ◽  
Fracture Energy ◽  
Laser Speckle ◽  
Displacement Measurement ◽  
Ambient Atmosphere ◽  
Specific Fracture Energy ◽  
Wedge Splitting Test ◽  
Splitting Test ◽  
Specific Fracture ◽  
Wedge Splitting

The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of refractory components with the ambient atmosphere. The present paper introduces a newly developed testing device, which is able to perform such experiments up to 1500 °C. For the testing of carbon-containing refractories a gas purging, for example, with argon, is possible. Laser speckle extensometers are applied for the displacement measurement. A carbon-containing magnesia refractory (MgO–C) was selected for a case study. Based on the results obtained from tests, fracture mechanical parameters such as the specific fracture energy and the nominal notch tensile strength were calculated. An inverse simulation procedure applying the finite element method yields tensile strength, the total specific fracture energy, and the strain-softening behavior. Additionally, the creep behavior was also considered for the evaluation.

scholarly journals Определение трещиностойкости образцов с шевронным надрезом с использованием трехточечного изгиба

2021 ◽  
Vol 47 (20) ◽  
pp. 35
Author(s):  
E.E. Дерюгин ◽  
А.А. Богданов
Keyword(s):  
Fracture Energy ◽  
Linear Dependence ◽  
Standard Test ◽  
Specific Fracture Energy ◽  
Chevron Notch ◽  
Test Conditions ◽  
Phenomenological Equations ◽  
Rectangular Specimen ◽  
Specific Fracture

A method is proposed for the experimental determination of the specific fracture energy of a material under loading by a 3-point bending of a rectangular specimen with a chevron notch. It is shown that at the initial stages of crack propagation in the chevron notch zone, a linear dependence of the specimen compliance on the crack length is observed. This makes it possible to calculate the specific fracture energy of the material without using the phenomenological equations used under standard test conditions. The calculations were carried out for technical titanium VT1-0.

Determination of the Mechanical Characteristics and Specific Fracture Energy of Thermally Hardened Reinforcement

2015 ◽  
Vol 50 (6) ◽  
pp. 824-829 ◽  
Author(s):  
Q. Zhang ◽  
Yu. V. Mol’kov ◽  
Yu. М. Sobko ◽  
Ya. Z. Blikhars’kyi ◽  
R. E. Khmil’
Keyword(s):  
Fracture Energy ◽  
Mechanical Characteristics ◽  
Specific Fracture Energy ◽  
Specific Fracture

Determination of size-independent specific fracture energy of concrete mixes by two methods

2013 ◽  
Vol 50 ◽  
pp. 19-25 ◽  
Author(s):  
A. Ramachandra Murthy ◽  
B.L. Karihaloo ◽  
Nagesh R. Iyer ◽  
B.K. Raghu Prasad
Keyword(s):  
Fracture Energy ◽  
Specific Fracture Energy ◽  
Specific Fracture
Sign in / Sign up

Export Citation Format

Share Document