نتایج جستجو برای: tensile strength ts of rocks

تعداد نتایج: 21177225  

2005
A. Ghaffar M. A. Chaudhry Kamran Ali

Tensile strength is one of the important strength parameters of concrete. Indirect methods have been used up till now for its measurement. These methods though widely accepted, do not furnish the true tensile strength of concrete. This paper presents a new approach for the experimental determination of true tensile strength of concrete. Results obtained by this test are quite encouraging and sh...

Journal: :Applied sciences 2022

Rocks are less resistant to tension than compression or shear. Tension cracks commonly initiate shear failure. The mechanical behavior of layered rocks under has been studied extensively, whereas the tensile still remains uncertain. In this paper, we study effect layer orientation on strength and failure patterns direct indirect through experimental numerical testing (RFPA2D: software Rock Fail...

ژورنال: علوم آب و خاک 2002
حسن رحیمی, , ابراهیم پذیرا, , فواد تاجیک, ,

The general characteristics of salt-affected soils and soil structure degradation process are partially known, but the effects of saline and sodic conditions on mechanical properties of soils are not well recognized. In this study, the effects of electrical conductivity (EC) and sodium adsorption ratio (SAR) on tensile strength of soils with different organic carbon contents were assessed under...

حسن رحیمی, , ابراهیم پذیرا, , فواد تاجیک, ,

The general characteristics of salt-affected soils and soil structure degradation process are partially known, but the effects of saline and sodic conditions on mechanical properties of soils are not well recognized. In this study, the effects of electrical conductivity (EC) and sodium adsorption ratio (SAR) on tensile strength of soils with different organic carbon contents were assessed under...

Journal: :تحقیقات مهندسی کشاورزی 0
سعید مینایی دانشیار گروه مکانیک ماشین های کشاورزی دانشگاه تربیت مدرس میثم ستاری نجف آبادی دانشجوی سابق کارشناسی ارشد گروه مکانیک ماشین های کشاورزی دانشگاه تربیت مدرس محمدحسین عزیزی دانشیار گروه علوم و صنایع غذایی دانشگاه تربیت مدرس حامد افشاری استادیار دانشگاه آزاد اسلامی واحد رودهن

in this research, the mechanical properties of seven types of nanofilm with differing amounts of silver and silver-clay particles were studied. the elasticity of modulus, tensile strength, toughness, elongation at break, tear strength and color of nanofilms were compared with those of ordinary ldpe film. results showed that the inclusion of nano particles increased the modulus of elasticity, te...

2011
Syed Altaf Hussain

During the last few years, natural fibers have received much more attention than ever before from the research community all over the world. These natural fibers offer a number of advantages over traditional synthetic fibers. The present study aims to determine the mechanical properties namely, Tensile strength (TS), Flexural strength (FS), and Impact strength (IS) of green coconut fiber reinfo...

2006
Gordon Selling David J. Sessa

Methods must be developed to improve both the processability and physical properties of zein-based articles. Typical plasticizing gents that improve processability have a negative impact on physical properties at elevated humidities. Continued efforts must be mployed to discover improved plasticizers. Carboxylic acids having more than one carboxylic acid moiety have been evaluated in ein melt f...

Journal: :journal of dentistry, tehran university of medical sciences 0
farideh geramipanah associate professor, dental implant research center and department of prosthodontics, school of dentistry, tehran university of medical sciences, tehran, iran. masoumeh ghandari dentist, private practice, tehran, iran. somayeh zeighami assistant professor, dental research center and department of prosthodontics, school of dentistry, tehran university of medical sciences, tehran, iran.

failure of soft liners depends mostly on separation from the denture base resin; therefore measurement of the bond strength is very important. the purpose of this study was to compare the tensile bond strength of two soft liners (acropars, molloplast-b) to denture base resin before and after thermocycling.twenty specimens fromeach of the two different soft liners were processed according to the...

Journal: Geopersia 2015

This study investigates the correlations among the tensile strength, mineral composition, and textural features of twenty-ninesandstones from Kouzestan province. The regression analyses as well as artificial neural network (ANN) are also applied to evaluatethe correlations. The results of simple regression analyses show no correlation between mineralogical features and tensile strength.However,...

Abdol Mohammad Rezavand Mehdi Bozorgi Taher Azdast,

This study experimentally investigates the effect of processing parameters on mechanical properties of injection molded copolymer. This paper presents an experimental study on the effects of processing parameters including melt temperature, injection pressure and amount preliminary materials on tensile strength of injection molded copolymer PP-WGRT. Polypropylene (PP - supplied by T.P.C of Iran...

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