The forearm interosseous ligament: comparative mechanical properties of the proximal, central, and distal bands

2020 ◽  
pp. 175319342093949
Author(s):  
Erica Kholinne ◽  
Jae-Man Kwak ◽  
Yucheng Sun ◽  
Kyoung Hwan Koh ◽  
In-Ho Jeon
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Ultimate Load ◽  
Testing Machine ◽  
Ultimate Strain ◽  
Interosseous Membrane ◽  
Interosseous Ligament ◽  
Fresh Frozen ◽  
Strain Relationship

We compared the mechanical properties of the three parts of interosseous membranes in 12 fresh-frozen specimens. The proximal, central and distal bands of interosseous membranes were tested in a universal testing machine. Tensile strength, ultimate strain, ultimate load and elastic modulus were measured and compared. The stress–strain relationship curves of these bands were similar to those of ligaments. Tensile strength, ultimate load and elastic modulus were significantly higher in the central band than in the proximal and distal bands. Ultimate strain was significantly lower in the central band than in proximal and distal bands. We conclude that the interosseous membrane is similar to ligaments in structure with each band having distinct characteristics. The findings may aid in clinical choice of proper grafts used for interosseous membrane reconstruction.

The Effect of Temperature on the Tensile Properties of Steel 0Cr18Ni9

2010 ◽  
Vol 654-656 ◽  
pp. 194-197
Author(s):  
Wei Fen Li ◽  
Wei Niu ◽  
Zhi Ming Hao ◽  
Ming Hai Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Yield Strength ◽  
Tensile Properties ◽  
Tensile Testing ◽  
Testing Machine ◽  
Effect Of Temperature ◽  
Tensile Testing Machine ◽  
Increasing Temperature

Experiments of tensile mechanical properties of steel 0Cr18Ni9 are done on the MTS 810 tensile testing machine, and the temperature range is from 20°C to 1200°C. The stress vs. strain curves are obtained. Results show that the elastic modulus, yield stress and tensile strength decrease with increasing temperature .Based on the experiment results, the functions of the elastic modulus, yield strength and tensile strength versus temperature are represented by polynomial.

Study on the Mechanical Properties of ABS Enhanced by Magnesium Hydroxide Whiskers

2013 ◽  
Vol 300-301 ◽  
pp. 1289-1292
Author(s):  
Yu Zhi Jiang ◽  
Li Li Zhang ◽  
Zhong Yang Zhang ◽  
Li Hua Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Magnesium Hydroxide ◽  
Fracture Strength ◽  
Testing Machine ◽  
Fracture Morphology ◽  
Total Elongation ◽  
Zinc Stearate ◽  
Universal Testing

magnesium hydroxide whiskers; ABS; mechanical properties Abstract: The magnesium hydroxide (MH) whiskers/ABS composites were prepared by melt-extrusion with whiskers as fillers. Zinc stearate was used as modifier to improve the compatibility of the composites. The mechanical properties of ABS enhanced by different cotents of magnesium hydroxide whiskers were tested by the RGT-10 universal testing machine. When the content of whiskers was 10%, The comprehensive mechanical properties of the composites were the best, the max load was 0.30KN, the elastic modulus was 0.16Gpa, the tensile strength was 20.11Mpa, the total elongation was 10.24%, the fracture strength was 2.05Mpa. The fracture morphology of the composites was analyzed by SEM, the higher contents of magnesium hydroxide whisker, the worse-distributed whisker in ABS matrix.

Manufacturing and Modeling of Hybrid Polymer Composites by Using Multiple-nonlinear Regression Analysis

2021 ◽  
Author(s):  
Muhammed Yılmaz ◽  
Melih Savran ◽  
Mustafa Öncül ◽  
Kutlay Sever
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Regression Analysis ◽  
Elastic Modulus ◽  
Polymer Composites ◽  
Nonlinear Regression ◽  
Ultimate Strain ◽  
Experimental Results ◽  
Coefficient Of Determination ◽  
Nonlinear Regression Analysis

In this study, artichoke stem particles (AS) and wollastonite mineral (W) were used as an organic and inorganic fillers in order to improve the mechanical properties of polypropylene (PP). In this regard, PP-based composites containing AS and W were produced as non-hybrid and hybrid materials using a high-speed thermokinetic mixer. Mechanical properties of polymer composites were investigated by the tensile test. Experimental results reveal that the highest elastic modulus for PP-W and the highest tensile strength for PP were obtained while the lowest ultimate strain value was gained using PP-W-A. Then, multiple nonlinear regression analysis was employed to determine the effect of weight ratios of wollastonite mineral and artichoke stem particles in polypropylene on elastic modulus, tensile strength and ultimate strain. Experimental results were expressed second order (tensile strength), third order (elastic modulus) and fourth order (ultimate strain) mathematical models. The results show that the proposed models have well fitted with the experimental results. The coefficient of determination (R2) values were found between 0.95 and 1 in all models. Also, boundedness check control of the proposed models which gives information about whether models are realistic or not was carried out by calculating the maximum and minimum values produced by the relevant model.

scholarly journals Mechanical properties and characteristic analysis of the new concave–convex polypropylene macro fiber

2019 ◽  
Vol 14 ◽  
pp. 155892501984301
Author(s):  
Chunlin Ding ◽  
Chao Wu ◽  
Zhewei Meng ◽  
Gang Fang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Elastic Modulus ◽  
Steel Fiber ◽  
Testing Machine ◽  
Alkali Solution ◽  
Alkali Resistance ◽  
Breaking Force ◽  
Characteristic Analysis

A computer-controlled electronic universal testing machine was used to test the mechanical properties of polypropylene macro fiber, including tensile strength, breaking elongation, and elastic modulus. The mechanical properties were compared with fibers soaked in an alkali solution and heat treated. The dispersion, corrosion resistance, and toughness of the polypropylene macro fiber in concrete were also analyzed via a fiber concrete test. The polypropylene macro fiber has a high tensile strength, large elastic modulus, and good ductility. The polypropylene macro fiber has heat resistance and alkali resistance. After heat treatment, the maximum breaking force, tensile strength, elastic modulus, and elongation at breaking are more than 92.0% of baseline. After alkali solution treatment, the maximum breaking force, tensile strength, elastic modulus, and elongation at breaking reach more than 88.0% of baseline. The surface of the polypropylene macro fiber is concave and convex; the cross section is X type, and the bite force is powerful between the concrete and the fiber. Compared to steel fiber, the polypropylene macro fiber is light and small. At the same volume content, the input number of the polypropylene macro fiber per volume concrete is more than that of steel fiber, and it is easy to evenly disperse the material. It has corrosion resistance and high toughness when the polypropylene macro fiber is mixed in the concrete.

scholarly journals An Evaluation of Mechanical Properties (Tensile strength &Elastic Modulus) of Soldered Straight Stainless Steel Wire

2018 ◽  
Vol 40 (1) ◽  
pp. 15-18
Author(s):  
Wael A Alrazzaq
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Elastic Modulus ◽  
Steel Wire ◽  
Testing Machine ◽  
Control Group ◽  
Orthodontic Appliances ◽  
Efficient Treatment ◽  
Steel Wires

The joining of a metal framework is frequently necessary to create individual orthodontic appliances and to achieve efficient treatment procedures. Stainless steel wires can be fused together by welding but this generally required reinforcement with solder. The present study was conducted to compare and evaluate the mechanical properties ( i.e. the tensile strength and elastic modulus )of silver soldered joints of stainless steel. A total of 40 wire specimens were prepared. The tensile strength and elastic modulus tests were carried out via by universal testing machine. the results indicated that the mean tensile strength of soldered group is lower than that of soldered group. As well, there are highly significant differences between two groups for tensile strength (p<0.01). Furthermore, the soldered group has the highest mean of elastic modulus than that of control group. As well, there are highly significant differences between two groups for elastic modulus (p<0.01). It is concluded that Stainless steel wires (Remanium)have superior mechanical properties with regard to tensile strength and elastic modulus.

scholarly journals Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 548 ◽  
Author(s):  
Leonid Agureev ◽  
Valeriy Kostikov ◽  
Zhanna Eremeeva ◽  
Svetlana Savushkina ◽  
Boris Ivanov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Strength Properties ◽  
Alumina Nanoparticles ◽  
Metal Powders ◽  
Wide Range ◽  
The Matrix ◽  
Spark Plasma ◽  
Average Size

The article presents the study of alumina nanoparticles’ (nanofibers) concentration effect on the strength properties of pure nickel. The samples were obtained by spark plasma sintering of previously mechanically activated metal powders. The dependence of the grain size and the relative density of compacts on the number of nanofibers was investigated. It was found that with an increase in the concentration of nanofibers, the average size of the matrix particles decreased. The effects of the nanoparticle concentration (0.01–0.1 wt.%) on the elastic modulus and tensile strength were determined for materials at 25 °C, 400 °C, and 750 °C. It was shown that with an increase in the concentration of nanofibers, a 10–40% increase in the elastic modulus and ultimate tensile strength occurred. A comparison of the mechanical properties of nickel in a wide range of temperatures, obtained in this work with materials made by various technologies, is carried out. A description of nanofibers’ mechanisms of influence on the structure and mechanical properties of nickel is given. The possible impact of impurity phases on the properties of nickel is estimated. The tendency of changes in the mechanical properties of nickel, depending on the concentration of nanofibers, is shown.

scholarly journals Numerical Studies of the Effects of Water Capsules on Self-Healing Efficiency and Mechanical Properties in Cementitious Materials

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Haoliang Huang ◽  
Guang Ye
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Cementitious Materials ◽  
Self Healing ◽  
Negative Effects ◽  
Numerical Studies ◽  
Healing Efficiency ◽  
The Impact ◽  
Positive Effect

In this research, self-healing due to further hydration of unhydrated cement particles is taken as an example for investigating the effects of capsules on the self-healing efficiency and mechanical properties of cementitious materials. The efficiency of supply of water by using capsules as a function of capsule dosages and sizes was determined numerically. By knowing the amount of water supplied via capsules, the efficiency of self-healing due to further hydration of unhydrated cement was quantified. In addition, the impact of capsules on mechanical properties was investigated numerically. The amount of released water increases with the dosage of capsules at different slops as the size of capsules varies. Concerning the best efficiency of self-healing, the optimizing size of capsules is 6.5 mm for capsule dosages of 3%, 5%, and 7%, respectively. Both elastic modulus and tensile strength of cementitious materials decrease with the increase of capsule. The decreasing tendency of tensile strength is larger than that of elastic modulus. However, it was found that the increase of positive effect (the capacity of inducing self-healing) of capsules is larger than that of negative effects (decreasing mechanical properties) when the dosage of capsules increases.

Graphite/Bio-Based Epoxy Composites: The Mechanical Properties Interface

2015 ◽  
Vol 799-800 ◽  
pp. 115-119 ◽  
Author(s):  
Anika Zafiah M. Rus ◽  
Nur Munirah Abdullah ◽  
M.F.L. Abdullah ◽  
M. Izzul Faiz Idris
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Elastic Modulus ◽  
Filler Content ◽  
Weight Percent ◽  
Epoxy Composites ◽  
Elongation At Break ◽  
Graphite Content ◽  
Dispersion Condition ◽  
Strong Interfacial Bonding

Graphite reinforced bio-based epoxy composites with different particulate fractions of graphite were investigated for mechanical properties such as tensile strength, elastic modulus and elongation at break. The graphite content was varied from 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.%, 30 wt.% by weight percent in the composites. The results showed that the mechanical properties of the composites mainly depend on dispersion condition of the treated graphite filler, aggregate structure and strong interfacial bonding between treated graphite in the bio-based epoxy matrix. The composites showed improved tensile strength and elastic modulus with increase treated graphite weight loading. This also revealed the composites with increasing filler content was decreasing the elongation at break.

Test Methods for Mechanical Properties of Structural Adhesives

2010 ◽  
Vol 97-101 ◽  
pp. 814-817 ◽  
Author(s):  
Jun Deng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Shear Strength ◽  
Elastic Modulus ◽  
Butt Joint ◽  
Test Methods ◽  
Joint Specimen ◽  
Lap Shear ◽  
Better Than

One of the greatest drawbacks to predicting the behaviour of bonded joints has been the lack of reliable data on the mechanical properties of adhesives. In this study, methods for determining mechanical properties of structural adhesive were discussed. The Young’s modulus, Poisson’s ratio and tensile strength of the adhesive were tested by dogbone specimens (bulk form) and butt joint specimens (in situ form). The shear modulus and shear strength were test by V-notched specimens (bulk form) and thick adherend lap-shear (TALS) joint specimens (in situ form). The test results show that the elastic modulus provided by the manufacturer is too low, the dogbone specimen is better than the butt joint specimen to test the tensile strength and elastic modulus and the TALS joint specimen is better than the V-notched specimen to test the shear strength.

scholarly journals Styrene–Acrylic Emulsion with “Transition Layer” for Damping Coating: Synthesis and Characterization

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1406
Author(s):  
Daoyuan Chen ◽  
Mingjin Ding ◽  
Zhixiong Huang ◽  
Yanbing Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Transition Layer ◽  
Testing Machine ◽  
Dynamic Mechanical Properties ◽  
Mechanical Analysis ◽  
Latex Film ◽  
Seeded Emulsion Polymerization ◽  
Acrylic Emulsion ◽  
Dynamic Mechanical

In order to study the dynamic mechanical properties of styrene–acrylic latex with a core/shell structure, a variety of latexes were synthesized by semi-continuous seeded emulsion polymerization based on “particle design” with the same material. The latexes were characterized by rotary viscosimeter, dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), dynamic mechanical analysis (DMA), and universal testing machine. The effects of difference at the glass transition temperature (Tg) of core and shell and the introduction of the “transition layer” on the damping and mechanical properties of latex film were studied. The results indicate that as the Tg of core and shell gets closer, the better the compatibility of core and shell, from phase separation to phase continuity. Furthermore, the introduction of the “transition layer” can effectively improve the tensile strength and tan δ (max) of the latex film. The tensile strength and maximum loss factor (f = 1 Hz) of latex with the “transition layer” increased by 36.73% and 29.11% respectively compared with the latex without the “transition layer”. This work provides a reference for the design of emulsion for damping coating.

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