Structural Properties of Immature Canine Bone

1981 ◽  
Vol 103 (4) ◽  
pp. 232-238 ◽  
Author(s):  
P. A. Torzilli ◽  
K. Takebe ◽  
A. H. Burstein ◽  
K. G. Heiple
Keyword(s):  
Bone Tissue ◽  
Structural Properties ◽  
Material Properties ◽  
Growth Process ◽  
Bending Strength ◽  
Developmental Process ◽  
Long Bones ◽  
Bending Tests ◽  
Four Point Bending ◽  
Tissue Material

Structural properties of growing canine long bones were determined from three and four-point bending tests. Mechanical and geometric properties were found to follow a biphasic growth process, with a rapid increase in bending strength and moment of inertia from 1 to 24 wk of age and a substantially decreased rate thereafter to maturity. Predicted bone tissue material properties were also found to follow this biphasic developmental process.

Correlation of Tensile and Bending Strength of Composites With a Circular Hole

1996 ◽  
Vol 118 (4) ◽  
pp. 542-547
Author(s):  
Yi Zhao ◽  
Su-Seng Pang ◽  
Chihdar Yang
Keyword(s):  
Circular Hole ◽  
Bending Strength ◽  
Elliptic Hole ◽  
Complex Nature ◽  
Orthotropic Plates ◽  
Element Analysis ◽  
Bending Tests ◽  
Four Point Bending ◽  
Circular Holes ◽  
Good Agreement

While significant studies have been conducted on composites containing a circular or an elliptic hole under tensile loading, few investigations have been reported on notched composites under bending due to the complex nature of the problem. In this paper, a correlation of strengths of orthotropic plates containing a circular hole under tension and bending has been proposed based on Lekhnitskii’s solutions for infinite width plates. Finite element analysis has been performed to verify the theoretical correlation. Uniaxial tension and four-point bending tests have also been conducted on Scotchply samples with circular holes of various sizes. A good agreement has been observed among the theoretical, FEA, and experimental results.

Long-term exposure to hypobaric hypoxia in rat affects femur cross-sectional geometry and bone tissue material properties

2009 ◽  
Vol 191 (2) ◽  
pp. 212-217 ◽  
Author(s):  
Clarisa Bozzini ◽  
María I. Olivera ◽  
Patricia Huygens ◽  
Rosa M. Alippi ◽  
Carlos E. Bozzini
Keyword(s):  
Bone Tissue ◽  
Material Properties ◽  
Hypobaric Hypoxia ◽  
Cross Sectional ◽  
Tissue Material

scholarly journals Microindentation for in vivo measurement of bone tissue material properties in atypical femoral fracture patients and controls

2012 ◽  
Vol 28 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Roberto C Güerri-Fernández ◽  
Xavier Nogués ◽  
José M Quesada Gómez ◽  
Elisa Torres del Pliego ◽  
Lluís Puig ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Material Properties ◽  
Femoral Fracture ◽  
Atypical Femoral Fracture ◽  
In Vivo Measurement ◽  
Tissue Material

Cement Composite Reinforced with Synthetic Fibers: Comparison of Three-Point and Four-Point Bending Test Results

2016 ◽  
Vol 827 ◽  
pp. 332-335 ◽  
Author(s):  
Jaroslav Topič ◽  
Jan Bartoš ◽  
Lubomír Kopecký ◽  
Karel Šeps ◽  
Zdeněk Prošek ◽  
...  
Keyword(s):  
Bending Strength ◽  
Cement Composite ◽  
Bending Test ◽  
Test Results ◽  
Recycled Pet ◽  
Bending Tests ◽  
Synthetic Fibers ◽  
Four Point Bending ◽  
Pet Fibers ◽  
Four Point Bending Test

Presented article deals with the influence of PET fiber production on the bending strength of cement-based composite when incorporated into the fresh mortar, and comparison of results of 3-point and 4-point bending test. Cement paste samples were reinforced with 2 wt. % of primary or recycled PET fibers. The bending test was performed on prismatic samples with dimension of 40 × 40 × 160 mm. It was found that samples with recycled PET fibers, compared to primary ones, exhibit a decrease in bending strength. In the case of 4-point bending tests, the samples with recycled PET fibers exhibited higher bending strength than reference samples without any fibers. However, in the case of 3-point bending tests, the samples with recycled PET fibers had lower bending strength than the reference ones. The results suggest that recycled PET fibers could be used as an alternative to reinforce cement-based composites.

Experimental Assessment of the Glued Laminated Timber Beams in 4-Point Bending Tests and Photoelastic Coating Technique

2015 ◽  
Vol 240 ◽  
pp. 155-160
Author(s):  
Ludomir J. Jankowski ◽  
Tomasz Nowak
Keyword(s):  
Cross Sections ◽  
Bending Strength ◽  
Experimental Assessment ◽  
Bending Tests ◽  
Coating Technique ◽  
Four Point Bending ◽  
Photoelastic Coating ◽  
Glued Laminated Timber ◽  
Measurement Results ◽  
Good Agreement

The paper presents the results of investigation on seven glued laminated timber (GL24h class) bending beams. Bending strength and modulus of elasticity were determined. The beams were tested for four-point bending by loading them at a constant speed deflection. The strain gauge method and photoelastic coating technique were applied for strain distributions determination in selected cross-sections of the beams. Good agreement of the measurement results was obtained with both techniques. Application of the photoelastic coating technique enabled more detailed analysis of the beams failure mode, including timber defects influence on the strain distributions.

Bending strength of ceramic compounds bonded with silicate-based glass solder

2021 ◽  
Vol 63 (7) ◽  
pp. 593-598
Author(s):  
Jan-Oliver Sass ◽  
Abdessalam Jakobi ◽  
Aurica Mitrovic ◽  
Cornelia Ganz ◽  
Jennifer Wilken ◽  
...  
Keyword(s):  
Bending Strength ◽  
Ethanol Treatment ◽  
Bending Tests ◽  
Bonding Parameters ◽  
Soldering Process ◽  
Four Point Bending ◽  
Process Pressure ◽  
Monolithic Zirconia ◽  
Ceramic Compounds

Abstract In the field of dental technology, the length of ceramic pontics is limited to avoid mechanical failure. To reduce thermal-induced residual stress within the ceramic, using smaller subcomponents and subsequent bonding with silicate-based glass solder may be a favorable approach. Thus, the bending strength of zirconia compounds bonded with different silicate-based glass solders was investigated. For this purpose, rectangular specimens made of zirconia were bonded by glass solder. Parameters such as the scarf angle (45° and 90°), two different glass solders, as well as the soldering process (pressure and surface treatment) were varied. All specimens were subjected to quasi-static four-point bending tests according to DIN EN ISO 843-1. Additionally, the quality of the glass solder connection was evaluated using μCT and fractography. In the present study, zirconia compounds were sucessful bonded of zirconia compounds using silicate-based glass solder was. No significant differences in terms of bending strength were observed with respect to the different bonding parameters analyzed. The highest bending strength of 130.6 ± 50.5 MPa was achieved with a 90° scarf angle combined with ethanol treatment of the specimens before soldering and an additional application of a pressure of 2 bars in a dental pressure pot before subsequent soldering. Nevertheless, the bending strengths were highly decreased when compared to monolithic zirconia specimens (993.4 ± 125.5 MPa).

scholarly journals Experimental research on load bearing capacity of adhesively jointed beech timber lamellas

2019 ◽  
Author(s):  
Eva Šuhajdová ◽  
Miloslav Novotný ◽  
Jan Pěnčík ◽  
Karel Šuhajda
Keyword(s):  
Bending Strength ◽  
Wood Products ◽  
Finger Joint ◽  
Polyurethane Adhesive ◽  
Load Bearing Capacity ◽  
Local Conditions ◽  
The Czech Republic ◽  
Bending Tests ◽  
Four Point Bending ◽  
Engineered Wood Products

The aim of this work was to verify behavior of a beech timber finger-joint in local conditions in the Central Europe. The samples were produced with a glued joint with the finger length of 23 mm according to standard ČSN EN 14 080. Commonly used polyurethane adhesive for production of engineered wood products in the Czech Republic was used. The samples were loaded by destructive four-point bending tests according to standard ČSN EN 408, and the achieved bending strength was statistically evaluated and compared with results of non-glued samples. The results showed that bending strength of lamellas with a finger-joint reached about 65% of the strength of samples without a joint, and the failure of lamellas occurred in most cases at the joint.

MICRO-FINITE ELEMENT ANALYSIS OF TRABECULAR BONE YIELD BEHAVIOR — EFFECTS OF TISSUE NONLINEAR MATERIAL PROPERTIES

2011 ◽  
Vol 11 (03) ◽  
pp. 563-580 ◽  
Author(s):  
HE GONG ◽  
MING ZHANG ◽  
YUBO FAN
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Bone Tissue ◽  
Material Properties ◽  
Material Nonlinearity ◽  
Nonlinear Material ◽  
Yield Strain ◽  
Element Analysis ◽  
Tissue Material

Bone tissue material nonlinearity and large deformations within the trabecular network are important for the characterization of failure behavior of trabecular bone at both the apparent and tissue levels. Micro-finite element analysis (μFEA) is a useful tool for determining the mechanical properties of trabecular bone due to certain experimental difficulties. The aim of this study was to determine the effects of bone tissue nonlinear material properties on the apparent- and tissue-level mechanical parameters of trabecular bone using μFEA. A bilinear tissue constitutive model was proposed to describe the bone tissue material nonlinearity. Two trabecular specimens with different micro-architectures were taken as examples. The effects of four parameters, i.e., tissue Young's modulus, tissue yield strain in tension, tissue yield strain in compression, and post-yield modulus on the apparent yield stress/strain, tissue von Mises stress distribution, the amount of tissue elements yielded in compression and tension under compressive and tensile loading conditions were obtained using nine cases for different values of those parameters by totally 36 nonlinear μFEA. These data may provide a reference for more sophisticated evaluations of bone strength and the related fracture risk.

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