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Topic: Elastic modulus

Related Topics

Elastic modulus

Elastic potential energy

Elastic limit

Solid mechanics

Yield strength

Physical compression

Stress (physics)

Deformation

Tensile strength

Compressive stress

Tensile test

Toughness

Elastic

Normal stress

Strain

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	Low modulus, small diameter fibers and products made therefrom - Patent 4425393
		(a) an elastic modulus of from 2,000 to 100,000 psi,
		Elastic modulus, designated as E.sub.f, is determined by measuring the initial slope of the stress-strain curve derived according to ASTM standard method No. D2256-69.
		The elastic modulus of the polymeric material must be in the range of 2,000 to 100,000 psi, and more preferably in the range of about 5,000 to 50,000 psi and the combination of elastic modulus and fiber diameter must be selected so as to provide a fiber stiffness parameter of less than 8.5.times.10.sup.-9 lb-in.sup.2.
	www.freepatentsonline.com /4425393.html (3932 words)

	Process and apparatus for producing elongated body of elastic modulus changing type - Patent 5258160
		The polymer for the flexible portion of the medical catheter is preferably one retaining an elastic modulus of 0.01 to 50 kgf/mm.sup.2, especially 0.1 to 10 kgf/mm.sup.2, when heated to the temperature of the body into which the catheter is to be inserted.
		The elastic moduli of the respective polymers to be alternately continuously fed to the long-land die for giving an elongated body according to the invention are in the torque transmitting portion/flexible portion ratio of 30 to 2, preferably 20 to 3.
		For example when a short modulus changing portion is to be obtained, the first polymer is fed to the long-land die at a rapidly decreasing rate while feeding the second polymer at a rapidly increasing rate to compensate for the decrease in the feed rate of the first polymer.
	www.freepatentsonline.com /5258160.html (7030 words)

	Elasticity Summary
		Elasticity is the ability of a material to return to its original shape and size after being stretched, compressed, twisted or bent.
		Elastic deformation (change of shape or size) lasts only as long as a deforming force is applied to the object, and disappears once the force is removed.
		The elastic modulus and elastic limit reveal much about the strength of the bonds between the smallest particles of a substance, the atoms or molecules it is composed of.
	www.bookrags.com /Elasticity (1978 words)

	Acoustical Society of America - On-line Contactless Measurement of the Elastic Modulus of a Moving Sheet by Ultrasonic ...
		Thus, in a tensile strength test of paper sample, the slope of the graph in the regime of small elongation is the elastic modulus of paper in the direction at which the external force is applied, known as the solicitation direction (fig.1).
		Also, the ratio of the elastic modulus in MD and in CD is correlated to the anisotropy of paper structure which is function of the fiber's orientation in the sheet.
		The results of the elastic modulus measurement on a moving sheet is identical to the measurement obtained on a static sheet.
	www.acoustics.org /press/133rd/3aed1.html (1106 words)

	4.2 Materials - Subgrade
		While the modulus of elasticity is stress divided by strain (e.g., the slope of the Figure 4.5 plot within the linear elastic range) for a slowly applied load, resilient modulus is stress divided by strain for rapidly applied loads – like those experienced by pavements.
		The modulus of elasticity for a material is basically the slope of its stress-strain plot within the elastic range (as shown in Figure 4.5).
		Thus, the modulus of elasticity is the slope of this part of the curve and is equal to about 207,000 MPa (30,000,000 psi) for steel.
	training.ce.washington.edu /WSDOT/Modules/04_design_parameters/04-2_body.htm (2575 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal
		An elastic modulus, or modulus of elasticity, is the mathematical description of an object or substance's tendency to be deformed elastically (i.e.
		The elastic modulus of an object is defined as the slope of its stress-strain curve in the elastic deformation region:
		An alternative definition is that the elastic modulus is the stress required to cause a sample of the material to double in length.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Elastic_modulus (431 words)

	IPA - Elastic Properties of Perforated Metal
		The ratio of the effective elastic modulus of the perforated material, E, to the elastic* modulus of the unperforated material, E, and the effective Poisson's Ratio, v*, are given.
		By evaluating the effect of the perforations, the equivalent effective elastic modulus of the perforated material, E, is obtained as a function of the elastic* modulus of the solid or unperforated material, E. In addition, the effective Poisson's Ratio, v*, of the perforated material is obtained.
		The effective elastic constants presented herein are for plane stress conditions and apply to the in-plane loading of the thin perforated sheets of interest.
	www.iperf.org /elastic.html (368 words)

	M&M Glossary - Elastic Modulus (Site not responding. Last check: )
		The elastic modulus relates the applied stress to the strain it produces.
		Young's modulus is, therefore, the slope of the stress/strain curve in the initial linear elastic region.
		For non-linear elastic materials the slope of the stress/strain curve at a given strain may be used to define an elastic modulus, the Tangent Modulus.
	www.princeton.edu /~humcomp/sophlab/m&mgl_5.htm (129 words)

	Elastic Materials
		Software is available with pre defined test method that control the test and give all relevant calculations such as extension modulus, elastic modulus and residual extension to all international and stores group standards.
		Loops of elastic are subjected to cyclic test using special precision loop grips which are available to ASTM, ISO, BS and other international standards.
		Elastic yarn is tested for its strength and elongation properties using either capstan or straight clamp pneumatic grips.
	www.testometric.co.uk /industries/elastic_materials.asp (114 words)

	Elastic Modulus: What Is It? (J8I4B)
		The elastic modulus is defined as the change in stress with an applied strain.
		Elastic modulus is not the same as strength; a 12 x 12 mm concrete block has a much higher elastic modulus than the same size block of Douglas fir, but the concrete is weaker than the wood in tension.
		By measuring the area, the effect of the changing elastic modulus is minimized, but the sensor must measure both the amount of energy absorbed by the tissue and the amount the tissue has been strained in the impact.
	postharvest.tfrec.wsu.edu /pgDisplay.php?article=J8I4B (448 words)

	Team UAH - ASCE Concrete Canoe Team at the University of Alabama in Huntsville - Reference Article
		Tests were initially conducted to determine the elastic modulus of the wire mesh and the plastic grid used to reinforce the concrete composite panels.
		The elastic modulus of the steel mesh was found to be 203.4 GPa (29.5 Msi) while the elastic modulus of the plastic grid was 1.38 GPa (200 ksi).
		is the elastic modulus of the concrete, I
	www.uah.edu /student_life/organizations/ASCE/Articles/Kirk's%20SEM%20Paper/semarticletext.htm (2477 words)

	Apparent elastic modulus and hysteresis of skeletal muscle cells throughout differentiation -- Collinsworth et al. 283 ...
		The apparent elastic modulus is determined from the slope of the linear fit to the curve.
		The elastic modulus is indicative of the extent to which the skeletal muscles deform after application of a stress.
		the increase in transverse elastic modulus, in the absence of
	ajpcell.physiology.org /cgi/content/full/283/4/C1219 (4965 words)

	Modeling the linear elastic properties of portland cement paste
		References [27-31] are general compilations of the elastic properties of various minerals, usually given in terms of averages of the Voigt-Reuss bounds, not the full anisotropic elastic tensor.
		That is why in Table 1, and in the simulations, the elastic moduli of ettringite were taken to be the same as for C-S-H. Figure 1: Two sets of experimental measurements on powder compacts of ettringite.
		Hence, the elastic moduli were taken, as a "best guess," to have elastic moduli equal to that of another phase, which phase they most resembled structurally.
	ciks.cbt.nist.gov /~garbocz/paper148/node3.htm (1234 words)

	Elastic Modulus Measurement
		Young's Modulus of Elasticity is defined as the ratio of stress (force per unit area) to corresponding strain (deformation) in a material under tension or compression.
		Shear Modulus of Elasticity is similar to the ratio of stress to strain in a material subjected to shear stress.
		Since modulus is expressed as a force per unit area, it is necessary to multiply the solution of the above equation by a mass/force conversion constant.
	www.olympusndt.com /es/applications-and-solutions/ndt-theory/elastic-modulus-measurement (731 words)

	Elastic modulus study of gold thin film for use as an actuated membrane in a superconductive radio frequency (RF) ...
		Elastic modulus study of gold thin film for use as an actuated membrane in a superconductive radio frequency (RF) microelectromechanical (MEM) switch
		The objective of this research was to find Young's elastic modulus for thin gold films at room and cryogenic temperatures based on the flexional model which has not been previously attempted.
		Results show that the elastic modulus for Au thin film can be 484 times higher at cryogenic temperature than it is at room temperature.
	digitalcommons.fiu.edu /dissertations/AAI3206017 (221 words)

	Effect of Elastic Modulus of Capping Material on Measured Strength of High-Strength Concrete Cylinders
		In the study reported in this paper, the dynamic modulus of elasticity and modified cube strength (ASTM C 116) of various capping materials were evaluated as a function of age.
		The elastic modulus of the capping materials was correlated with previously reported cylinder strengths.
		In cases where the cylinder strength was affected by the capping material, there is evidence that the cylinder strength was related to the modulus of elasticity and not to the cube strength of the capping material.
	www.astm.org /DIGITAL_LIBRARY/JOURNALS/CEMENT/PAGES/281.htm (341 words)

	Temperature dependent elastic modulus, thermal expansion, thermal conductivity database
		Temperature dependent elastic modulus, thermal expansion, thermal conductivity database
		elastic modulus, young's modulus, youngs modulus, cte, thermal expansion, thermal conductivity, emissivity, stress rupture, creep strength
		Provide easy access to over 2,500 materials and 20,000 sets of temperature dependent data for elastic modulus, thermal expansion, thermal conductivity, S-N fatigue curves, stress-strain curves and more.
	www.jahm.com (323 words)

	Elasticity, Elastic Properties
		The bulk modulus of a solid influences the speed of sound and other mechanical waves in the material.
		For the description of the elastic properties of linear objects like wires, rods, columns which are either stretched or compressed, a convenient parameter is the ratio of the stress to the strain, a parameter called the Young's modulus of the material.
		Young's modulus can be used to predict the elongation or compression of an object as long as the stress is less than the yield strength of the material.
	hyperphysics.phy-astr.gsu.edu /hbase/permot3.html (318 words)

	Physical Properties of Carbon Nanotubes
		In 1996, researchers at NEC in Princeton and the University of Illinois measured the average modulus to be 1.8 TPa.
		The modulus is calculated from the amount of blur seen in the photograph at different temperatures.
		It has been suggested that the controversy into the value of the modulus is due to the author's interpretation of the thickness of the walls of the nanotube.
	www.pa.msu.edu /cmp/csc/ntproperties/elasticbehavior.html (592 words)

	[No title]
		Mechanical spring - Elastic body, whose primary function is to deflect or distort or absorb energy under load and which recovers its original shape when released.
		Shear modulus G - Is defined as the ratio of shear stress to the shear strain.
		Young's modulus - Is a measure of the stiffness of a given material, That is how hard it is to stretch chemical bonds that bind the atoms of a material together.
	www.vanel.com /dictionary.php?lang=english (1380 words)

	Akhremitchev Research - Force Spectroscopy
		In case of purely elastic deformations without adhesion the analysis is greately simplified and relatively simple analytical solutions exist for a number of axisymmetric tip shapes to connect the force-indentation dependence with the mechanical properties.
		The use of this dependence to determine the modulus is illustrated in the figure to the right.
		Co nverting the slope to the modulus requires measurement or estimate of the tip radius of curvature and the Poisson's ratio.
	www.chem.duke.edu /~boris/research/elasticity/index.htm (1437 words)

	1999 Building Publications - Effect of Elastic Modulus of Capping Material on Measured Strength of High-Strength ... (Site not responding. Last check: )
		In the study reported in this paper, the dynamic modulus of elasticity and modified cube strength (ASTM C 116) of various capping materials were evaluated as a function of age.
		The elastic modulus of the capping materials was correlated with previously reported cylinder strengths.
		In cases where the cylinder strength was affected by the capping material, there is evidence that the cylinder strength was related to the modulus of elasticity and not to the cube strength of the capping material.
	fire.nist.gov /bfrlpubs/build99/art034.html (310 words)

	Method of determining elastic modulus invention
		From these data, the reduced elastic modulus is thus determined through a set of function-like relationships established in this invention, which is then used to calculate the elastic modulus of the indented material.
		The modeling conical shape is assigned to have a half-included.theta., and a radius R of the spherical cap or an absolute bluntness value.DELTA.h to ensure that its cross sectional area is the same as A(h) for all h values.
		The elastic modulus of the indented material E is then obtained from the formula 9 E = 1 - v 2 1 E r - 1 - v i 2 E i.
	www.freshpatents.com /Method-of-determining-elastic-modulus-dt20050714ptan20050154540.php (1187 words)

	Spring Design and Elastic Modulus
		The modulus of elasticity in tension and shear is vital to spring design.
		For most steels and age- hardenable alloys, the modulus varies as a function of chemical composition, cold work and degree of aging.
		Certain nickel-chromium-iron alloys are designed to have a constant modulus over the temperature range from -5° to 65°C (-50° to 150°F) and are exceptions to the above rule.
	www.acewirespring.com /elastic-modules.html (291 words)

	Finding the Shear Modulus and the Bulk Modulus
		The shear modulus G is also known as the rigidity modulus, and is equivalent to the 2nd Lamé constant
		Since both G and the elastic modulus E are required to be positive, the quantity in the denominator of G must also be positive.
		Since both K and the elastic modulus E are required to be positive, the following requirement is placed on the upper bound of Poisson's ratio by the denominator of K,
	www.efunda.com /formulae/solid_mechanics/mat_mechanics/elastic_constants_G_K.cfm (406 words)

	Editorial -Elastic Modulus and Silicone Hydrogel Contact Lens Fitting
		Its probably true to say that modulus of elasticity has not been top of the list of properties most practitioners give deep thought to during the contact lens fitting process.
		In fact, there are several different “moduli” that can be measured, but Young’s modulus, also called the elastic modulus and denoted by the letter E, is the one that is usually quoted in connection with contact lenses.
		In the process of achieving a good physical fit, the traditional view has been that the higher the modulus of the material, the less forgiving will be the lens in conforming to the eye.
	www.siliconehydrogels.org /editorials/aug_05.asp (1076 words)

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