Influence of Technological Options on the Material Reliability of AlSi17Cu5 Cast Alloy

2015 ◽  
Vol 229 ◽  
pp. 17-24
Author(s):  
Jaroslaw Piątkowski
Keyword(s):  
Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Material Property ◽  
Cast Alloy ◽  
Static Tensile Test ◽  
Static Tensile ◽  
Technological Options

In the dissertation the influence of overheating of around 250oC above Tliq on the material reliability of AlSi17Cu5 cast alloy has been shown. On the basis of static tensile test, the following had been determined: HB hardness, tensile strength and yield strength for four, chosen technological variants. The results were the base to verify the thesis of compliance between tested feature arrangement and normal arrangement, and on this ground also material reliability determined with Weibull’s statistic arrangement had been defined. This parameter grasp the interdependence between lasting probability and chosen material property of the alloy.

Tensile Properties and Fracture Behavior of SiCp/AC4CH Composite at Loading Velocities of up to 10m/s

2004 ◽  
Vol 449-452 ◽  
pp. 305-308
Author(s):  
Lei Wang ◽  
Toshiro Kobayashi ◽  
Chun Ming Liu
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Strain Rate ◽  
Fracture Behavior ◽  
Tensile Deformation ◽  
Optical Microscope ◽  
Fracture Elongation ◽  
Before And After

Tensile test at loading velocities up to 10 m·s-1(strain rate up to 3.2x102s-1) was carried out forr SiCp/AC4CH composite and AC4CH alloy. The microstructure of the composite before and after tensile deformation was carefully examined with both optical microscope and SEM. The experimental results demonstrated that the ultimate tensile strength (UTS) and yield strength (YS) increase with increasing loading velocity up to 10 m·s-1. Comparing with AC4CH alloy, the fracture elongation of the composite is sensitivity with the increasing strain rate. The YS of both the composite and AC4CH alloy shows more sensitive than that of the UTS with the increasing strain rate, especially in the range of strain rate higher than 102s-1.

Static Tensile Test of rGO-PDMS Composite

2018 ◽  
pp. 46-51
Author(s):  
Barbara NASIŁOWSKA ◽  
Piotr WAWRZYNIAK ◽  
Zdzisław BOGDANOWICZ ◽  
Paweł BOGUSZ ◽  
Aneta BOMBALSKA ◽  
...  
Keyword(s):  
Tensile Test ◽  
Static Tensile Test ◽  
Static Tensile

A Method for Estimating Uncertainty of Indentation Tensile Properties in Instrumented Indentation Test

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
Eun-chae Jeon ◽  
Joo-Seung Park ◽  
Doo-Sun Choi ◽  
Kug-Hwan Kim ◽  
Dongil Kwon
Keyword(s):  
Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Tensile Properties ◽  
Indentation Test ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Instrumented Indentation ◽  
Estimation Model ◽  
Instrumented Indentation Test

The instrumented indentation test, which measures indentation tensile properties, has attracted interest recently because this test can replace uniaxial tensile test. An international standard for instrumented indentation test has been recently legislated. However, the uncertainty of the indentation tensile properties has never been estimated. The indentation tensile properties cannot be obtained directly from experimental raw data as can the Brinell hardness, which makes estimation of the uncertainty difficult. The simplifying uncertainty estimation model for the indentation tensile properties proposed here overcomes this problem. Though the influence quantities are generally defined by experimental variances when estimating uncertainty, here they are obtained by calculation from indentation load-depth curves. This model was verified by round-robin test with several institutions. The average uncertainties were estimated as 18.9% and 9.8% for the indentation yield strength and indentation tensile strength, respectively. The values were independent of the materials’ mechanical properties but varied with environmental conditions such as experimental instruments and operators. The uncertainties for the indentation yield and tensile strengths were greater than those for the uniaxial tensile test. These larger uncertainties were caused by measuring local properties in the instrumented indentation test. The two tests had the same tendency to have smaller uncertainties for tensile strength than yield strength. These results suggest that the simplified model can be used to estimate the uncertainty in indentation tensile properties.

Statistical Evaluation Tensile Properties of High-Density Polyethylenes

2012 ◽  
Vol 445 ◽  
pp. 213-218 ◽  
Author(s):  
Ahmet Koyun ◽  
Baris Koksal ◽  
Esma Ahlatcioglu ◽  
A. Binnaz Hazar Yoruc
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Statistical Evaluation ◽  
Test Results ◽  
Plastic Materials ◽  
Service Conditions ◽  
End Use ◽  
Chain Lengths

The mechanical properties, among all the properties of plastic materials, are often the most important properties because virtually all service conditions and the majority of end-use applications involve some degree of mechanical loading [1]. In the present work three different commercial polyethylene materials are tensile tested at four or five different tensile rates and two or three temperatures. Tensile test results against tensile rate include stress at 0.5 % elongation, tensile strength, yield strength, modulus of elasticity, elongation at yield and % elongation are determined. It is concluded that the structure, chain lengths and branching rates of polymer matrix significantly effected tensile test curve characteristic.

Finite Element Analysis of Tensile Test for HDPE/EPR-MMT Nanocomposite

2015 ◽  
Vol 1115 ◽  
pp. 414-417
Author(s):  
N.M. Shaffiar ◽  
M.K.A. Halim ◽  
H. Anuar ◽  
M.A.H.A. Majid
Keyword(s):  
Finite Element ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Tensile Loading ◽  
Nanocomposite Material ◽  
Percentage Error ◽  
Material Strength ◽  
Element Analysis

A small amount of nanodispersed filler leads to an improvement in material properties. Montmorillonite (MMT) is one type of filler commonly used in nanocomposite material. A high density polyethylene/ethylene propylene rubber - montmorillonite (HDPE/EPR-MMT) is one of the nanocomposite material that is new to the industry. This paper investigates the strength of HDPE/EPR-MMT nanocomposite under tensile loading. The experimental results of the tensile test on the nanocomposite will be compared with the tensile simulation in the Finite Element (FE) analysis for validation. The results showed that it is validated with relatively low percentage error of 0.01 % for the ultimate tensile strength and 0.18 % for the yield strength. The ultimate tensile strength of HDPE/EPR-MMT is 14.5 MPa and the yield strength is 13.2 MPa. By using MMT as a filler, the material strength is improved. The ultimate tensile strength of HDPE/EPR without filler is 11.45 MPa and the yield strength is 10.95 MPa.

Microstructure and Mechanical Properties of Mg96Y3Zn1 Alloy Processed by Equal Channel Angular Pressing

2011 ◽  
Vol 682 ◽  
pp. 49-54
Author(s):  
Bin Chen ◽  
Chen Lu ◽  
Dong Liang Lin ◽  
Xiao Qin Zeng
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Tensile Test ◽  
Equal Channel Angular Pressing ◽  
Ultrafine Grains ◽  
Angular Pressing ◽  
Average Grain Size

The Mg96Y3Zn1 alloy processed by equal channel angular pressing has been investigated. It was found that the Mg96Y3Zn1 alloy processed by ECAP obtained ultrafine grains and exhibits excellent mechanical properties. After ECAP, the average grain size of Mg96Y3Zn1 alloy refined to about 400 nm. The highest strengths with yield strength of 381.45MPa and ultimate tensile strength of 438.33MPa were obtained after 2 passes at 623K. It was found that cracks were preferentially initiated and propagated in the interior of X-phase during the tensile test. As a result, the elongation of alloy is decreased with pass number increasing.

High-speed imaging on static tensile test for unidirectional CFRP

2008 ◽  
Author(s):  
Hideaki Kusano ◽  
Yuichiro Aoki ◽  
Yoshiyasu Hirano ◽  
Yasushi Kondo ◽  
Yosuke Nagao
Keyword(s):  
Tensile Test ◽  
High Speed ◽  
High Speed Imaging ◽  
Static Tensile Test ◽  
Static Tensile
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