Results 31 to 40 of about 139,348 (340)
Nanoscale spatial mapping of mechanical properties through dynamic atomic force microscopy
Beilstein Journal of Nanotechnology, 2019 Dynamic atomic force microscopy (AFM) was employed to spatially map the elastic modulus of highly oriented pyrolytic graphite (HOPG), specifically by using force modulation microscopy (FMM) and contact resonance (CR) AFM.
Zahra Abooalizadeh +2 more
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Experimental study on LBL beams [PDF]
MATEC Web of Conferences, 2019 Six specimens were made and tested to study the mechanical properties of LBL beams. The mean ultimate loading value is 68.39 MPa with a standard deviation of 6.37 MPa, giving a characteristic strength (expected to be exceeded by 95% of specimens) of 57 ...
Zhao Chenjie +18 more
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矿业科学学报, 2019 Rock mass’s elastic modulus is closely related to its compositions,inner structural characteristics and stress-strain state.By assuming the elastic modulus of pore that as a part of rock is zero,a relational model between the elastic modulus of the whole
Zhao Yang +4 more
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Elastic Properties of Carbon Nanotubes and Nanoropes [PDF]
, 1997 Elastic properties of carbon nanotubes and nanoropes are investigated using an empirical force-constant model. For single and multi-wall nanotubes the elastic moduli are shown to be insensitive to details of the structure such as the helicity, the tube radius and the number of layers. The tensile Young's modulus and the torsion shear modulus calculated
arxiv +1 more source
Iraqi Geological JournalEvaluating the elastic characteristics of reservoir's rocks is crucial for the oil and gas sector to reduce risks throughout drilling and production operations. Elastic parameters are essential for prediction of wellbore stability, estimation of
Doaa Mahdi, Ayad Alrazzaq
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Comparative Study on the Test Method for Tensile Elastic Modulus of Rock Materials
Advances in Civil Engineering, 2019 Rock material has different mechanical behaviors under compressive and tensile loading. Correspondingly, there are two types of elastic modulus: compressive elastic modulus Ec and tensile elastic modulus Et, respectively.
Yan Zhang, Dawei Yu
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Modulus-Pressure Equation for Confined Fluids [PDF]
, 2016 Ultrasonic experiments allow one to measure the elastic modulus of bulk solid or fluid samples. Recently such experiments have been carried out on fluid-saturated nanoporous glass to probe the modulus of a confined fluid. In our previous work [J. Chem. Phys., (2015) 143, 194506], using Monte Carlo simulations we showed that the elastic modulus $K$ of a
arxiv +1 more source
Elastic properties of eta carbide (eta-Fe2C) from ab initio calculations. Application to cryogenically treated gear steel [PDF]
Journal of Materials Science, March 2014, Volume 49, Issue 5, pp
2383-2390, 2014 The elastic properties of eta-Fe2C (eta carbide) have been determined from ab initio density functional theory (DFT) calculations using the generalized gradient approximation (GGA). The isotropic polycrystalline elastic modulus of eta-Fe2C has been calculated as the average of anisotropic single-crystal elastic constants determined from the ab initio ...
arxiv +1 more source
Case Studies in Construction Materials, 2022 Changes of environmental temperature and humidity affect the elastic modulus of concrete, which makes the vibration-based bridge health monitoring method unreliable.
Shuzhen Yang, Baodong Liu, Fang Li
doaj
Negative energy elasticity in a rubberlike gel [PDF]
Phys. Rev. X 11, 011045 (2021), 2019 Rubber elasticity is the archetype of the entropic force emerging from the second law of thermodynamics; numerous experimental and theoretical studies on natural and synthetic rubbers have shown that the elasticity originates mostly from entropy change with deformation.
arxiv +1 more source