Elastic materials strain when stretched and immediately return to their original state once the stress is removed. Young's Modulus or Tensile Modulus alt. The Elasticity of Glass.
That 'point of no return' useful and powerful that every bridge you drive over and every high rise you enter Whilst the resistance of glass to compressive stress is extremely high, its resistance to tensile stress is significantly lower.The resistance to breakage on deflection is in the order of:Glass is a perfectly elastic material: it does not exhibit permanent deformation, until breakage. But there The bigger the number, the stiffer the material. Obviously some materials are more bendable/flexible than others—rubber is Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation.Viscous materials, like water, resist shear flow and strain linearly with time when a stress is applied. is called the 'As long as you stay short of the elastic limit, the amount the spoon bends is proportional The density of glass is 2.5, which gives flat glass a mass of 2.5kg per m2 per mm of thickness, or 2500 kg per m3.The compressive strength of glass is extremely high: 1000 N/mm2 = 1000 MPa.
The elastic modulus of an object is defined as the slope of its stress–strain curve in the elastic deformation region: A stiffer material will have a higher elastic modulus.
Heat strengthening or toughening glass enables it to withstand temperature differences of 150 to 200°C. In particular, the connection between the BP and elasticity as well as the glass transition temperature is explored by systematically changing the bending …
Professor Julius Sumner Miller demonstrates the elasticity of glass and how incompressible water is using a glass flask and coloured water.
to the force applied. As you stretch it, it 'pinches' in the middle. A related number is Poisson's Ratio. Elasticity Glass is a perfectly elastic material: it does not exhibit permanent deformation, until breakage. a piece of rubber. Obviously some materials are more bendable/flexible than others—rubber is more flexible than concrete. SAINT-GOBAIN GLASS can perform thermal safety risk analyses on request. Modulus of Elasticity - is a measure of stiffness of an elastic material.
Basically the idea is this: imagine you are stretching However it is fragile, and will break without warning if subjected to excessive stress.
more flexible than concrete.The flexibility of solids was first put on a mathematical basis by The basic idea is this: suppose you're bending a piece of metal—a plastic ruler, for example. Glass: Science and Technology, Volume 5: Elasticity and Strength in Glasses covers the scientific and engineering aspects of glass elasticity and strength. for comparison:So, for example, from the above chart, you can see that aluminium alloy is about as flexible as glass. However it is fragile, and will break without warning if subjected to excessive stress.This modulus expresses the tensile force that would theoretically have to be applied to a glass sample to stretch it by an amount equal to its original length.It is expressed as a force per unit area.For glass, in accordance with European standards :When a sample is stretched under mechanical stress a decrease in its cross-section is observed.
Modulus of Elasticity - and Ultimate Tensile and Yield Strength for steel, glass, wood and other common materials Sponsored Links Tensile Modulus - or Young's Modulus alt.
is a point beyond which you can bend the spoon and it is permanently bent — it doesn't return to its original shape when you release your pressure on it. If you are stretching Poisson’s ratio (μ) is the relation between the unit decrease in the direction perpendicular to the axis of the effort and the unit strain in the direction of the effort.Linear expansion is expressed by a coefficient measuring the stretch per unit length for a variation of 1°C. is designed depending on this "simple" mathematical model that Young devised.Young's Modulus is a ratio — it's a number. The flexibility of solids was first put on a mathematical basis by Thomas Young (1773–1829), physicist, physician and Egyptologist 1 (the first to completely translate the enchorial (demotic) text of the Rosetta Stone).
:36 Value of modulus of elasticity for some materials Material Modulus of elasticity [GPa] aluminium and its alloys 65 - 73 ceramics 8 - 12 concrete 15 - 40 copper 125 diamond 1000 lightweight concrete 0,8 - 2 low alloy steels 200 - 210 polystyrene 3,2 - 3,5 silica glass 60 - 90 a material East/West, say, Poisson's Ratio is how much the material 'pinches' North/South.Here is a table of Young's Modulus and Poisson's Ratio for various types of glass, as well as a few other materials
That ratio—how much the spoon bends per amount of force applied—is
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elasticity of glass