scholarly journals Estimativa da friabilidade de solos com dados de resistência tênsil de agregados em formas naturais/ Estimation of soil friability with tensile strength data of aggregates in natural forms

2021 ◽  
Vol 7 (6) ◽  
pp. 58764-58777
Author(s):  
Lucas de Sousa Oliveira ◽  
Alexandre dos Santos Queiroz ◽  
Ícaro Vasconcelos do Nascimento ◽  
Angélica da Silva Lopes ◽  
Francisca Gleiciane da Silva ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Strength Data ◽  
Natural Forms

scholarly journals Tensile and Flexural Strength of Commercially Pure Titanium Submitted to Laser and Tungsten Inert Gas Welds

2013 ◽  
Vol 24 (6) ◽  
pp. 630-634 ◽  
Author(s):  
Juliana Abdallah Atoui ◽  
Daniela Nair Borges Felipucci ◽  
Valeria Oliveira Pagnano ◽  
Iara Augusta Orsi ◽  
Mauro Antonio de Arruda Nobilo ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Laser Welding ◽  
Pure Titanium ◽  
Strength Test ◽  
Inert Gas ◽  
Commercially Pure Titanium ◽  
Middle Point ◽  
Strength Data ◽  
Commercially Pure

This study evaluated the tensile and flexural strength of tungsten inert gas (TIG) welds in specimens made of commercially pure titanium (CP Ti) compared with laser welds. Sixty cylindrical specimens (2 mm diameter x 55 mm thick) were randomly assigned to 3 groups for each test (n=10): no welding (control), TIG welding (10 V, 36 A, 8 s) and Nd:YAG laser welding (380 V, 8 ms). The specimens were radiographed and subjected to tensile and flexural strength tests at a crosshead speed of 1.0 mm/min using a load cell of 500 kgf applied on the welded interface or at the middle point of the non-welded specimens. Tensile strength data were analyzed by ANOVA and Tukey's test, and flexural strength data by the Kruskal-Wallis test (α=0.05). Non-welded specimens presented significantly higher tensile strength (control=605.84±19.83) (p=0.015) and flexural strength (control=1908.75) (p=0.000) than TIG- and laser-welded ones. There were no significant differences (p>0.05) between the welding types for neither the tensile strength test (TIG=514.90±37.76; laser=515.85±62.07) nor the flexural strength test (TIG=1559.66; laser=1621.64). As far as tensile and flexural strengths are concerned, TIG was similar to laser and could be suitable to replace laser welding in implant-supported rehabilitations.

The combination of tensile strength data of powders and failure loci from Jenike shear cell tests

1978 ◽  
Vol 19 (1) ◽  
pp. 115-118 ◽  
Author(s):  
R.K. Eckhoff ◽  
P.G. Leversen ◽  
H. Schubert
Keyword(s):  
Tensile Strength ◽  
Shear Cell ◽  
Strength Data

scholarly journals Statistical Analysis of Tensile Strength and Flexural Strength Data from Universal Testing Machine

2020 ◽  
pp. 54-62
Author(s):  
Ahmad Adlie Shamsuri ◽  
Siti Atiqa Al Zahra Mat Darus
Keyword(s):  
Tensile Strength ◽  
Flexural Strength ◽  
Testing Machine ◽  
Z Score ◽  
P Values ◽  
Strength Data ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Relative Standard ◽  
The Difference

The tensile strength and flexural strength are the most important mechanical properties as they provide the value of maximum tensile stress and flexural stress. The objective of this study is to analyze statistically the tensile strength and flexural strength data obtained from a universal testing machine. The tests were conducted upon a thermoplastic, specifically high-density polyethylene (HDPE), which was in-house molded by using an injection-molding machine. Three different persons have performed the tensile and flexural tests. Three other laboratories have also been involved in these tests. The relative standard deviation (RSD) values were calculated to express the precision and repeatability of the tests. Later, the standard score (z-score) values were also calculated to aid the comparison of the data. Finally, the single-factor analysis of variance (ANOVA) was employed to investigate statistically significant differences between the means of the tensile strength and flexural strength data of each person and laboratory. From the calculation, the RSD values of all three persons and laboratories were lower than 5%, indicating that the data were consistent. The z-score values of all three persons were within the range from -2 to 2, suggesting that the data were close to average. However, the z-score value for one of three laboratories was not within the range, demonstrating that the data was unusual. The P-values of all three persons were higher than 0.05 (except for flexural strength), implying that the difference between the means of the data was not statistically significant. Nevertheless, the P-values of all three laboratories were lower than 0.05, indicating that the difference between the means of the data was statistically significant.

scholarly journals Modified rule of Mixtures for prediction of Tensile strength of Unidirectional Fibre Reinforced Composites

1997 ◽  
Vol 6 (5) ◽  
pp. 096369359700600 ◽  
Author(s):  
C. S. Lee ◽  
W. Hwang
Keyword(s):  
Tensile Strength ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Reinforced Composites ◽  
Strength Data ◽  
Rule Of Mixtures ◽  
Unidirectional Fibre ◽  
Fibre Reinforced Composites ◽  
Good Agreement

The rule of mixtures was modified based on the concept of effective fibre volume fraction. The degradation parameter of effective fibre volume fraction was proposed in consideration of the microgeometry of composite components. It was shown that the modified rule has good agreement with the experimental strength data and the degradation parameter of effective fibre volume fraction used in this study can be used on general composites.

scholarly journals Preparation and tensile properties of guar gum hydrogel films

2019 ◽  
Vol 28 (3) ◽  
pp. 180-186 ◽  
Author(s):  
Daniel Jussen ◽  
Sandeep Sharma ◽  
James K Carson ◽  
Kim L Pickering
Keyword(s):  
Tensile Strength ◽  
Guar Gum ◽  
Tensile Modulus ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Similar Magnitude ◽  
Strength Data ◽  
Moisture Contents ◽  
The Mean ◽  
Hydrogel Films

Guar gum hydrogels may be dried to form polymer films which have the potential for use as biodegradable alternatives to polymers such as low-density polyethylene. In this study, the tensile strength and tensile modulus of guar gel films having moisture contents ranging between 15% and 18% (wet basis) were measured at a strain rate of 1 mm min−1. Mean tensile strengths of the films ranged between 25 MPa and 40 MPa (dependent on composition) which is of similar magnitude to the tensile strength data for polyethylene and cellophane that are reported in the literature. The mean tensile modulus of the films (1.5–2.5 GPa) was higher than the tensile modulus values reported for low-density polyethylene but comparable to those for cellophane (3 GPa).

scholarly journals Effect of fatliquor level on the physical quality of Indonesian rabbit fur leather

2021 ◽  
Vol 902 (1) ◽  
pp. 012021
Author(s):  
T Maryati ◽  
T Nugroho ◽  
Sundari ◽  
S H C Dewi
Keyword(s):  
Tensile Strength ◽  
Analysis Of Variance ◽  
Physical Quality ◽  
Tear Strength ◽  
Strength Data ◽  
Leather Tanning ◽  
Test Level ◽  
Range Test

Abstract This study aimed to evaluate the effect of fatliquor level on the physical quality of Indonesian rabbit fur leather. A total of 15 sheets of Indonesian local rabbit leather (30 cm long and 26 cm wide) were randomly divided into 5 treatments with 3 replicates. The five treatments were level of fatliquor: 5%, 10%, 15%, 20%, and 25%. In this study, the physical quality of rabbit fur leather was measured in tension, elongation, tensile strength, and tear strength. Data were analyzed using analysis of variance followed by Duncan’s New Multiple Range Test. Level of fatliquor affects (P<0.05) softness, elongation, tensile strength, and tear strength of rabbit fur leather. The use of fatliquor up to 20% increased the rabbit leather softness and elongation, but there was a decrease at 25%. The use of 10% fatliquor produces the highest tensile strength. The highest tear strength resulted from the use of fatliquor levels of 5% and 15%. It is concluded that using 20% fatliquor on the fatliquoring process of rabbit fur leather tanning produces the best physical quality.

Distribution of Tensile Strength Data

1966 ◽  
Vol 39 (2) ◽  
pp. 340-347
Author(s):  
R. D. Heap
Keyword(s):  
Experimental Data ◽  
Tensile Strength ◽  
Exponential Distribution ◽  
Experimental Results ◽  
Strength Data ◽  
Weighted Means ◽  
Tensile Data ◽  
The Mean

Abstract The problems of tensile strength estimation are outlined, with particular reference to Ease's work showing that tensile data for rubbers are distributed doubly exponentially. Efficient estimators are given as weighted means for samples of up to six observations, and efficient but simple, easily calculated approximations to these are given. Large or incomplete samples are also considered. A suggested scheme for treatment of experimental data is given, including experimental results comparing the recommended estimators with the mean and median, and showing a doubly exponential distribution of observations.

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