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	Coefficient of thermal expansion - Wikipedia, the free encyclopedia
		The volumetric thermal expansion coefficient (sometimes simply thermal expansion coefficient) is a thermodynamic property of a substance given by
		The expression for linear thermal expansion coefficient is approximately
		For ordinary materials, the linear thermal expansion coefficient is approximately 1/3 the volumetric coefficient.
	en.wikipedia.org /wiki/Volumetric_thermal_expansion_coefficient (338 words)

	Determination of the coefficient of thermal expansion for two Äspö rocks, diorite and granite (Site not responding. Last check: 2007-10-19)
		The coefficient of thermal expansion can be determined in the laboratory by measuring the expansion of a sample over a temperature interval.
		The coefficient of thermal expansion (a) was then calculated by dividing the measured expansion with the temperature interval.
		The value of the volumetric coefficient is often assumed to be equal to three times the value of the axial coefficient.
	epubl.luth.se /1402-1617/2001/139/index-en.html (309 words)

	Encyclopedia: Glass
		For these applications, borosilicate glass (such as Pyrex) is usually used for its strength and low coefficient of thermal expansion, which gives greater resistance to thermal shock and allows for greater accuracy in laboratory measurements when heating and cooling experiments.
		Jump to: navigation, search The coefficient of thermal expansion is used in two ways: as a volumetric thermal expansion coefficient as a linear thermal expansion coefficient These characteristics are closely related.
		Tensile stress (or tension) is the stress state leading to expansion; that is, the length of a material tends to increase in the tensile direction.
	www.nationmaster.com /encyclopedia/Glass (10062 words)

	Coefficient of thermal expansion - Encyclopedia.WorldSearch (Site not responding. Last check: 2007-10-19)
		The effect of thermal cycling, vacuum baking, and related failure mechanisms on the coefficient of thermal expansion of graphite fiber reinforced composite laminates
		X-ray determination of the coefficient of thermal expansion
		Thermal expansion coefficients and single crystal elastic constants of silicon carbides
	encyclopedia.worldsearch.com /coefficient_of_thermal_expansion.htm (390 words)

	INSC: MatProp: Common: Density (Site not responding. Last check: 2007-10-19)
		For simplicity, the subscript P has been eliminated from the thermal-expansion coefficients in the following discussion with the understanding that constant pressure is implied in all the following equations.
		Because many measurements of thermal expansion involve measurement of a length change, it is common to find tabulations of the fractional (or percent) change in length,
		The same relation does not hold for the mean thermal-expansion coefficients, as the following considerations show.
	www.insc.anl.gov /matprop/common/den-ther.php (235 words)

	Cordierite ceramic body having low thermal expansion coefficient, process for producing the same, and method of ...
		Studies and investigations by the present inventors revealed that the coefficient of thermal expansion of a cordierite composition, which is the most important property of a cordierite ceramic body, is closely associated with a cordierite reaction process, more specifically, associated with a process in which the cordierite is crystallized at a temperature between 1200.degree.
		The thermal expansion coefficient of a product to be obtained is closely associated with the number of pins, and the peripheral speed of the mill, and with the amount of the reclaimed cordierite material to be milled.
		The thermal expansion coefficients of the honeycomb structures X, and the cordierite reaction ratios R of the honeycomb blocks Y were measured, as in Example 6.
	www.freepatentsonline.com /4851376.html (8185 words)

	Volumetric Feeder (Site not responding. Last check: 2007-10-19)
		Coefficient of thermal expansion 2: * as a ''volumetric '' thermal expansion coefficient 5: These characteristics are closely related.
		The Volumetruc thermal expansion coefficient can be measured for 7: ===Volumetric thermal expansion coefficient=== 8: The '''volumetric thermal expansion coefficient''' (sometimes simpl 33: mal expansion coefficient is aproximately 1/3 the Vllumetric coefficient.
		Volumetric flask 1: A '''volumetric flask''' ('''vol flask''' for short) is a piece o 4: The use of a Volumettic flask almost always involves either measuring a c 7: h.edu/~chemlab/techniques/vol_flasks.html Page on Volumetdic flasks and their use]
	www.musicians-resource.com /site/12765-volumetric-feeder.html (271 words)

	Crop Coefficient (Site not responding. Last check: 2007-10-19)
		A crop coefficient is the ratio between ETa of...
		A crop coefficient is the ratio between ET a of a particular crop at a certain growth stage and PET.
		Volumetric thermal expansion coefficient The volumetric thermal expansion coefficient (sometimes simply thermal expansion coefficient) is a thermodynamic property of a substance given by Î² = - (1 / Ï)(âÏ/âT)Ï const where Ï density T Temperature Î² measures the fractional change in density as temperature increases at constant pressure.
	www.boriq.com /Crop+Coefficient.html (574 words)

	Environmental Dynamics and Simulation - Laser Photoacoustic Spectroscopy: Basic and Applied Research (Site not responding. Last check: 2007-10-19)
		In the simplest terms, LPAS involves the absorption of light energy by a molecule and the subsequent detection of heat energy released by the molecule upon return to the ground state.
		The sensitivity of LPAS arises from the inherently high efficiency of thermal conversion that occurs in most of these light-absorption processes coupled with a similar efficiency in the piezoelectric devices that convert the pressure wave into a voltage pulse.
		In fact, the heat release (q, q', or q'') is detected volumetrically, generally by solvent expansion in response to temperature increase.
	www.emsl.pnl.gov /docs/eds/annual_report1999/1627b-4a.html (2243 words)

	Coefficient Of Thermal Expansion (Site not responding. Last check: 2007-10-19)
		Coefficient of thermal expansion for composites with randomly...
		Scope: Linear Thermal Expansion is used to determine the rate at which a material expands as a function...
		Estimation of the coefficient of thermal expansion of Bi2223 at low temperature Estimation of the coefficient of thermal expansion of Bi2223 at low temperature The evaluation of the coefficient of thermal expansion (CTE) of each constituent in...
	colunn.com /1houses/56/coefficient-of-thermal-expansion.html (406 words)

	Ocean 540: Subsidence and Sea Level
		Thermal contraction of the lithosphere increases its density and so isostatic adjustment will result in subsidence of old lithosphere as it ages.
		The left term is positive, since the lithosphere is cooler and denser than the asthenopshere, and represents the effect of thermal contraction; the second term is negative and represents the effect of replacing denser mantle with lighter seawater as the seafloor subsides.
		Lecture 3), and the coefficient of thermal expansion for the mantle:
	www2.ocean.washington.edu /oc540/lec02-4 (813 words)

	Thermal therapy of RCC
		Rubinsky (1980 and 1982) analyzed the thermal stresses when inward freezing of a 1-D spherical and planar freezing of a 1-D slab-like biological tissue initially at phase change temperature.
		The thermal stress distribution surrounding a makeup1-D spherical cryosurgical probe was studied using both elastic (Rabin and Steif 1996) and elastic-perfectly plastic-like (Rabin and Steif 2000) analytical models.
		The volumetric expansion due to phase change was taken as the initial stress in the ice.
	www.menet.umn.edu /~xmhe/ThermalStress.html (603 words)

	Search Results for expansion - Encyclopædia Britannica
		The change in dimension—linear or volumetric—of a rock specimen with temperature is expressed in terms of a coefficient of thermal expansion.
		This thermal expansion of glass is critical to its thermal shock performance (that is, its performance when subjected...
		Expansion due to heat is usually measured in linear fashion as the change in a unit length of a material caused by a one-degree change in temperature.
	www.britannica.com /search?query=expansion&submit=Find&source=MWTAB (628 words)

	thermal expansion -- Encyclopædia Britannica
		It is usually expressed as a fractional change in dimensions or volume per unit temperature change; a linear expansion coefficient is usually employed in describing the expansion of a solid, while a volume expansion coefficient is more useful for a liquid or a gas.
		This thermal expansion of glass is critical to its thermal shock performance (that is, its performance when subjected suddenly to a temperature change).
		In the simplest cases, these thermal strains can be treated as being linear in the temperature change 0 (where 0 is the temperature of the reference state), writing = (0) for the strain produced by...
	www.britannica.com /eb/article?eu=73946 (949 words)

	Polymeric Material Properties
		If the measured values of the thermal properties are not available, the suggested values of the thermal properties for various generic materials in the molten state listed in Table 2-1 can be used in the analysis.
		Thermal conductivity is one of the most important properties that influence the injection molding pressure prediction.
		In warpage analysis, additional properties, such as the thermal expansion coefficient and mechanical properties, are required.
	www.scudc.scu.edu /cmdoc/rm_doc/02_Material_props.html (5667 words)

	Coefficient of thermal expansion (Site not responding. Last check: 2007-10-19)
		The volumetric thermal expansion coefficient (sometimes simply thermal expansioncoefficient) is a thermodynamic property of a substance given by
		For engineering purposes, the property of expansion is usually expressed as the fractional linear change in length of a barper degree of temperature change.
		The expansion and contraction of material must be considered when designing large structures,when using tape or chain to measure distances when surveying land, and when designing molds for casting hot material.
	www.therfcc.org /coefficient-of-thermal-expansion-118125.html (115 words)

	Design of a Primitive Nanofactory
		The expansion of the ridge opens a space in its center, which is then filled by a shim which sits above the almost-closed gap between the two halves of the ridge.
		Once the shim is in place, the volume of the joint cannot easily be compressed, and the surfaces of the ridges cannot easily slide past each other; pulling apart the joint would require compressing a solid mass of diamond by several percent or breaking at least half of the ridges simultaneously.
		The volumetric thermal expansion coefficient of diamond is 3.5x10^-6/K (Freitas, 1999, Appendix A); the linear coefficient is one-third that, or 1.2x10^-6/K. A temperature difference of 1 K thus causes a 200 nm block to expand by a small fraction of an angstrom, while a 10.5-cm surface will expand by 126 nm.
	www.kurzweilai.net /articles/art0607.html?m=18 (9425 words)

	Volumetric Feeder (Site not responding. Last check: 2007-10-19)
		Volumetric heat capacity 1: '''Volumetric heat capacity''' ('''VHC''') describes the abilit 5: The volumetric heat capacity is defined as having SI units o 12: Category:Physical quantityheat capacity, volumetric 13: Category:Thermodynamicsheat capacity, volumetric
		The volumetric thermal expansion coefficient can be measured for 7: ===Volumetric thermal expansion coefficient=== 8: The '''volumetric thermal expansion coefficient''' (sometimes simpl 33: mal expansion coefficient is aproximately 1/3 the volumetric coefficient.
		Volumetric flask 1: A '''volumetric flask''' ('''vol flask''' for short) is a piece o 4: The use of a volumetric flask almost always involves either measuring a c 7: h.edu/~chemlab/techniques/vol_flasks.html Page on Volumetric flasks and their use]
	www.elusiveeye.com /side12765-volumetric-feeder.html (322 words)

	Research Foundation - Olubusola Thomas
		In general, reservoir fluids in the preproduction stage are assumed to be static, while the thermal gradient in any direction in the reservoir is assumed to be negligible.
		In general, vertical compositional variations are due to the interaction of gravity and a vertical temperature gradient, while reservoirs with areal and vertical compositional variations generally have existing thermal gradients, both vertical and horizontal, as shown in Fig.
		Substituting (1.3) into (1.1) and (1.2) gives a set of equations that can be solved together with the energy balance for the pressure, temperature and composition profiles in the reservoir as functions of time, using an appropriate numerical scheme.
	pangea.stanford.edu /~assumpta/foundation.html (937 words)

	Data Sets for C-MOLD Input Files
		This is an empirical coefficient that characterizes the effect of fiber-fiber interaction in fiber-filled polymers.
		C-MOLD Cooling calculates the thermal conductivity at a temperature that is the average of the inlet melt temperature and the coolant temperature.
		The thermal conductivity data at temperatures between the processing temperature and room temperature are obtained using the transient, line-source technique.
	www.scudc.scu.edu /cmdoc/rm_doc/E_Data_sets.html (12289 words)

	Supplemental Notes on Convective Heat Transfer
		is the thermal conductivity of the fluid and L is a characteristic dimension of the model under consideration, e.g the length of a flat plate or the diameter of a cylinder.
		r - density of the fluid; m - dynamic viscosity of the fluid; a - thermal diffusivity of the fluid, n - kinematic viscosity of the fluid and n = m/r; L - a characteristic dimension of the model.
		The volumetric thermal expansion coefficient brings in the effects of buoyancy in free convection flows; for an ideal gas, b = 1/T, where T is the absolute temperature of the gas.
	www.eng.fsu.edu /~alvi/EML4304L/webpage/reference2.htm (660 words)

	Coefficient of thermal expansion of liquids
		This devices are cylinder-piston arrangements that use some spherical filling medium to translate the three dimentional expansion of a substance into a one dimensional motion.
		A few years ago, there was an article in one of the thermal analysis journals, such as "Thermochimica Acta" or "Journal of Thermal Analysis and Calorimetry" (nee J. Therm.
		Best regards, Roger Blaine, TA Instruments -----Original Message----- From: Tse, Albert [mailto:atse@ppg.com] Sent: Friday, August 10, 2001 1:54 PM To: 'THERMAL@egr.msu.edu' Subject: Coefficient of thermal expansion of liquids THERMAL NEWS GROUP: Dear THERMAL Subscribers: I have been asked by a customer to determine the coefficient of thermal expansion of a liquid monomer.
	www.egr.msu.edu /mailman-archives/thermal/2001-August/000574.html (314 words)

	thermal
		A thermal is a column of rising air in the lower altitudes of the Earth's atmosphere.
		Thermals are created by the uneven heating of the Earth's surface from solar radiation.
		The size and strength of thermals are influenced greatly by the properties of the lower atmosphere.
	www.fact-library.com /thermal.html (110 words)

	Encyclopedia: Coefficient of thermal expansion
		Look up Mercury in Wiktionary, the free dictionary Mercury may mean: Science Mercury (planet), the nearest planet to the Sun in the solar system.
		Quartz is the most abundant mineral in the Earths continental crust.
		For applications using the thermal expansion property, see bi-metal and mercury thermometer thermocouple and Peltier_Seebeck effect.
	www.nationmaster.com /encyclopedia/Coefficient-of-thermal-expansion (862 words)

	[No title]
		The other properties are as follows: (- density of the fluid; (- dynamic viscosity of the fluid; (- thermal diffusivity of the fluid, (- kinematic viscosity of the fluid and (= (/(; L - a characteristic dimension of the model.
		Also note that in general and specifically for the correlations given here the fluid properties such as thermal conductivity, viscosity, etc. are determined at the film temperature, where the film temperature is the average of the surface temperature and the fluid freestream temperature.
		The volumetric thermal expansion coefficient brings in the effects of buoyancy in free convection flows; for an ideal gas, (= 1/T, where T is the absolute temperature of the gas.
	www.eng.fsu.edu /~alvi/EML4304L/webpage/reference.doc (671 words)

	PMIC - Advanced Materials Testing Laboratory. Thermal Expansion, Moisture Expansion, Diffusivity, Specific Heat, ... (Site not responding. Last check: 2007-10-19)
		Coefficient of Thermal Expansion - CTE - is defined as the fractional increase in length per unit rise in temperature.
		PMIC uses a variety of techniques to measure the thermal expansion of materials, components and structures.
		The slope of the strain/temperature curve at a given temperature is the instantaneous coefficient of thermal expansion.
	www.pmiclab.com /testing/ThermalExpansion.html (772 words)

	Tailorable multi-layer printed wiring boards of controlled coefficient of thermal expansion - Patent 4876120
		The negative coefficient of thermal expansion and high modulus of elasticity of the liquid crystal polymers enable a laminate and MLPWB to be manufactured therefrom having a tailored coefficient of thermal expansion, broadly ranging from about 0 to 15 ppm/.degree.
		In the construction of a multi-layer printed wiring board (MLPWB), a method for controlling the in-plane linear coefficient of thermal expansion (CTE) thereof which comprises forming at least one layer of said MLPWB from a liquid crystal polymer selected from the group consisting of poly(para-phenylene benzobisthiazole), poly(para-phenylene benzobisoxazole), poly(2,5-benzothiazole), poly(2,5-benzoxazole), and mixtures thereof.
		The negative coefficient of thermal expansion and high Young's modulus of the preferred liquid crystal polymers enable a laminate and MLPWBs manufactured therefrom to have a precisely controlled coefficient of thermal expansion, for example, broadly ranging from about 0 to 15 ppm/.degree.C. and advantageously 3 to 7 ppm/.degree.C..
	www.freepatentsonline.com /4876120.html (5532 words)

	Coefficient Of Thermal Expansion Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-19)
		Looking For coefficient of thermal expansion - Find coefficient of thermal expansion and more at Lycos Search.
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	www.localcolorart.com /encyclopedia/Coefficient_of_thermal_expansion (575 words)

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