Elastic moduli as determined by shock

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Using Nanoindenters to Determine Elastic Modulus

Apr 30,2020 Elastic moduli as determined by shock#0183;Elastic moduli are determined as the ratio of tensile stress to strain within the materials elastic limits for compressive and tensile loads; essentially comprising a measure of the force required to cause reversible (elastic) deformation.Thermal shock resistance of porous Al2O3-mullite ceramics Nov 01,2015 Elastic moduli as determined by shock#0183;The decrease of the elastic modulus after the thermal shock and standard deviations of the relative elastic moduli of S3.7 and S7.3 were much higher than those of S0,NC3.7,and NC7.3.Download Download full-size image; Fig.2.SEM images of the samples S7.3 (a),S0 (b),and NC7.3 (c) after 12 thermal shock cycles.The Elastic Modulus of HMX Crystals Determined by The hardnesses and elastic moduli of the six materials are computed using the analysis procedure and compared with values determined by independent means to assess the accuracy of the method.

The Elastic Modulus of HMX Crystals Determined by

The hardnesses and elastic moduli of the six materials are computed using the analysis procedure and compared with values determined by independent means to assess the accuracy of the method.Sound velocities in highly oriented pyrolytic graphite Dec 24,2015 Elastic moduli as determined by shock#0183;Previous reports of rapid phase transformation above 18 GPa [Erskine and Nellis,Nature 349,317 (1991)] and large elastic waves below 18 GPa [Lucas et al.,J.Appl.Phys.114,093515 (2013)] for shock-compressed ZYB-grade highly oriented pyrolytic graphite (HOPG),but not for less oriented ZYH-grade HOPG,indicated a link between the orientational order dependence of the HOPGSound velocities in highly oriented pyrolytic graphite Dec 24,2015 Elastic moduli as determined by shock#0183;Previous reports of rapid phase transformation above 18 GPa [Erskine and Nellis,Nature 349,317 (1991)] and large elastic waves below 18 GPa [Lucas et al.,J.Appl.Phys.114,093515 (2013)] for shock-compressed ZYB-grade highly oriented pyrolytic graphite (HOPG),but not for less oriented ZYH-grade HOPG,indicated a link between the orientational order dependence of the HOPG

Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextEffective Elastic Moduli and Characterization of a

The analytical results are then compared with elastic moduli determined from nondestructive ultrasonic wave speed measurements of SiC particle-reinforced titanium matrix composites produced via shock wave consolidation.For the shock consolidated Ti-SiC metal matrix composites compacts,the overall particle damage mode is found to be similar to Some results are removed in response to a notice of local law requirement.For more information,please see here.12345Next(PDF) Elastic moduli,damping and modulus of rupture The elastic moduli were measured after each thermal shock cycle.After 10 cycles,the MOR,the damping and the damping dependence on excitation amplitude were measured atSome results are removed in response to a notice of local law requirement.For more information,please see here.

Shock compression of aluminum single crystals to 70 GPa

Oct 15,2013 Elastic moduli as determined by shock#0183;Crystalline anisotropy effects were examined at high stresses by shock compressing Al single crystals along 100 ,110 ,and 111 orientations to peak stresses ranging from 40 to 70 GPa.Laser-interferometry was used to monitor particle velocity histories,including unloading wave profiles.A single,flat-top shock wave followed by a structured release was observed in all the experiments.Shock compression of aluminum single crystals to 70 GPa Oct 15,2013 Elastic moduli as determined by shock#0183;Crystalline anisotropy effects were examined at high stresses by shock compressing Al single crystals along 100 ,110 ,and 111 orientations to peak stresses ranging from 40 to 70 GPa.Laser-interferometry was used to monitor particle velocity histories,including unloading wave profiles.A single,flat-top shock wave followed by a structured release was observed in all the experiments.Shock compression and quasielastic release in tantalum Previous studies of quasielastic release in shock-loaded FCC metals have shown a strong influence of the defect state on the leading edge,or first observable arrival,of release wave,due to large density of pinned dislocation segments behind the shock front,their relatively large pinning separation,and a very short response time as determined by drag coefficient in shock-compressed state.

On equation of state,elastic,and lattice dynamic

calculated elastic moduli,we have derived the volume dependent Gruneisen parameter and used this in Lindemann melting rule to determine the pressure effect on the melting point,i.e.,the melting Measurement of release wave speed in shockshock wave data provides a critical series of tests to determine the range of compressions over which the low-pressure elastic moduli and their pressure and temperature derivatives may be reliably applied and to determine the relative merits of various formulations ofMeasurement of release wave speed in shockshock wave data provides a critical series of tests to determine the range of compressions over which the low-pressure elastic moduli and their pressure and temperature derivatives may be reliably applied and to determine the relative merits of various formulations of

Measurement of elastic velocities of MgO under shock

velocities measured in shock states up to 528 kb imply second pressure derivatives of the elastic moduli cj,given by Koch/' '= --1 Elastic moduli as determined by shock#241; 15,where K is the bulk modulus.The measurement of the velocities of rare- faction waves that propagate into shock- compressed materials provides a method forINFLUENCE OF NON-CLASSICAL ELASTIC-PLASTICshown to depend on the stress state within the shock transition layer.These solutions,several of which hold for arbitrary elastic anisotropy,arc also applicable to acceleration waves and localization problems and to materials with dependence of the clastic moduli on plastic strain.Such elastic--plastic coupling isEvaluating the Dynamic Elastic Modulus of Concrete Using The objectives of this study are to investigate the relationship between static and dynamic elastic moduli determined using shear-wave velocity measurements and to demonstrate the practical potential of the shear-wave velocity method for in situ dynamic modulus evaluation.Three hundred 150 by 300 mm concrete cylinders were prepared from three different mixtures with target compressive

Establishment of back-track method A simpler approach

2 days ago Elastic moduli as determined by shock#0183;Procedures and techniques used to determine synthetic fiber properties may not always be suitable and adaptable for natural fibers due to various reasEllECTIVE ELASTIC MODULI DETERMINED FROM ROADdetermine the effective elastic moduli of the various layers with satisfactory results.The whole deflection basin,as measured on the surface with the Road Surface Deflectometer (RSD),was always available for determining effective elastic moduli.The method whereby effective elastic moduli are determined with the MOD is briefly described.Elasticity,shear-mode softening and high-pressure Abstract.Elastic wave travel times have been determined as functions of hydrostatic pressure to 3 GPa for five modes of propagation in synthetic single-crystal w Elastic moduli as determined by shock#252;stite Fe o.943 O by ultrasonic phase comparison.The measured travel times,corrected for transducer-bond phase shifts,constrain very accurately the zero-pressure elastic moduli (GPa) and,for the first time,their first pressure

Elastic moduli as determined by shock-release experiments

Jun 01,1993 Elastic moduli as determined by shock#0183;Elastic moduli determined by shock-release experiment 693 that the leading observable release-wave disturbance remains fully elastic and given by eqn (1).The major conclusion of this investigation is that,contrary to current theory and practice,release-wave measurements in shock-loaded FCC metals may not give the correct elastic modulus G(e).Effect of compositional variation on the shock wave The objective of this work was to determine how variations in composition influence the shock wave response of bulk amorphous alloys (BAAs).Toward this end,(Hf,Zr)-based bulk amorphous alloy specimens (nominal composition of (Hf 0.5 Zr 0.5 ) 56.7 Cu 15.3 Ni 12.5 Nb 5.0 Al 10.0 Y 0.5 Elastic moduli as determined by shocklt;/SUB Elastic moduli as determined by shockgt;) were subjected to peak stresses of 4-16 GPa in plate impact experiments and their response wasEffect of Cylinder Size on the Modulus of Elasticity and The primary objective of this study is to investigate the effects of cylinder size (150 by 300 mm and 100 by 200 mm) on empirical equations that relate static elastic moduli and compressive strength and static and dynamic elastic moduli of concrete.For the purposes,two sets of one hundred and twenty concrete cylinders,150 by 300#x2009;mm and 100 by 200#x2009;mm,were prepared from three

Comparison between results of dynamic static moduli of

Aug 01,2013 Elastic moduli as determined by shock#0183;Pressure-meter tests were performed to determine Young,E S,and shear,G,moduli,which are considered the most important elastic properties of soil and rock formations.Three boreholes at different locations were prepared during drilling for measuring E S via pressure meter according to ASTM D4719-2000 [7] every 5.0 m from ground surface down Cited by 4Publish Year 1993Author J.N.JohnsonEffective elastic moduli and characterization of a The analytical results are then compared with elastic moduli determined from non-destructive ultrasonic wave-speed measurements of SiC-particle-reinforced titanium-matrix composites produced by shock-wave consolidation.For the shock-consilidated Ti SiC metal-matrix composite compacts,the overall particle damage mode is found to be similar to Cited by 21Publish Year 1994Author W.Tong,G.RavichandranMeasurement of elastic velocities of MgO under shock velocities measured in shock states up to 528 kb imply second pressure derivatives of the elastic moduli cj,given by Koch/' '= --1 Elastic moduli as determined by shock#241; 15,where K is the bulk modulus.The measurement of the velocities of rare- faction waves that propagate into shock- compressed materials provides a method for

2.Definitions and Methods - Stanford Earth

The elastic moduli are determined by the experiment performed.For example,the bulk modulus is measured in the hydrostatic compression experiment.The shear modulus is measured in the shear deformation experiment.Stress and strain.Forces acting within a mechanical body are mathematically characterized by the stress tensor which is a 3x3 matrix.2.Definitions and Methods - Stanford EarthThe elastic moduli are determined by the experiment performed.For example,the bulk modulus is measured in the hydrostatic compression experiment.The shear modulus is measured in the shear deformation experiment.Stress and strain.Forces acting within a mechanical body are mathematically characterized by the stress tensor which is a 3x3 matrix.(PDF) Experimental Determination of Third-Order Elastic To determine the nonlinear elastic response of diamond,single crystals were shock compressed along the [100],[110],and [111] orientations to 120 GPa peak elastic stresses.

(PDF) Experimental Determination of Third-Order Elastic

To determine the nonlinear elastic response of diamond,single crystals were shock compressed along the [100],[110],and [111] orientations to 120 GPa peak elastic stresses.(PDF) Experimental Determination of Third-Order Elastic To determine the nonlinear elastic response of diamond,single crystals were shock compressed along the [100],[110],and [111] orientations to 120 GPa peak elastic stresses.(PDF) Elastic moduli,damping and modulus of rupture The elastic moduli were measured after each thermal shock cycle.After 10 cycles,the MOR,the damping and the damping dependence on excitation amplitude were measured at

(PDF) ELASTIC PROPERTIES OF ROCKS - ResearchGate

The initial elastic modulus of brick masonry was chosen according to PN-EN 1996-1-1.The elastic moduli of sandstone and granite were selected based on Ref.[28].It was suspected that the granite

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