Young's modulus, the Young modulus or the modulus of elasticity in tension, is a mechanical property that measures the tensile stiffness of a solid material. 2.2.3. In NC titanium, the volumetric share of grain boundaries is an order of magnitude lower than that in Ni–P, where the decrease in the Young's modulus is substantial. Stress-Strain Diagram (cont) • Elastic Region (Point 1 –2) - The material will return to its original shape after the material is unloaded( like a rubber band). We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. If you continue browsing the site, you agree to the use of cookies on this website. In FPS unit psi or ksi or psf or ksf. Modulus of Elasticity of Concrete can be defined as the slope of the line drawn from stress of zero to a compressive stress of 0.45f’ c. As concrete is a … Looks like you’ve clipped this slide to already. :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 Hence this may be not the only factor which influence on the elastic modulus value. (if the stress and deformation are along an axis) Young's modulus; Synonyms . It quantifies the relationship between tensile stress (force per unit area) and axial strain (proportional deformation) in the linear elastic region of a material and is … 9-Philippines’ Integrated Stormwater Management, Case Study No. Although the general proportionality constant between stress and strain in three dimensions is a 4th-order tensor called stiffness , systems that exhibit symmetry , such as a one-dimensional rod, can often be reduced to applications of Hooke's law. An elastic modulus of the transitional zone ≥ 32.4 kPa or a total prostate volume ≥ 54.4 mL was diagnostic of BOO, with a sensitivity, specificity, positive predictive value, negative predictive value and accuracy for BOO of 97.2%, 62.5%, 85.4%, 90.9% and 86.5%, respectively. non-permanently) when a stress is applied to it, defined as the ratio of stress to strain. Elastic modulus is a key parameter employed to estimate the deformation of structures and structural members and is typically expressed in terms of the compressive strength [, , , ]. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Define the following• Strain• Stress• Brittle• Elastic 3. 2. 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. See our Privacy Policy and User Agreement for details. Determining the elastic modulus and hardness … On SlideShare. The elastic property of lead increases when the temperature is decreased. Chapter 15 –Modulus of Elasticity page 85 Tab. Modulus of elasticity will have same unit as that for stress because strain is unit less parameter and therefore Modulus of elasticity unit in S.I. The modulus is an important design parameter used for computing elastic deflections. Units of elastic modulus are followings: In SI unit MPa or N/mm 2 or KN/m 2. The 28-day elastic modulus were reduced by 6.1%, 13.8%, 18.9%, and 60.2% for PVC aggregate content of 5% - The stress is linearly proportional to the strain in this region. Elastic Modulus in Physics | Definition, Formulas, Symbol, Units – Elasticity Elastic Modulus Measurement J D Lord and R Morrell Abstract: Elastic modulus is an intrinsic material property and a key parameter in engineering design and materials development. See our Privacy Policy and User Agreement for details. Clipping is a handy way to collect important slides you want to go back to later. 0 From Embeds. Modulus of Elasticity of Concrete. Now customize the name of a clipboard to store your clips. 1. The increase and decrease of elasticity depend upon the type of … 1. 12. d) Effect of impurities: The addition of impurities produces variation in the elastic property of the materials. 1. tensile stress- stress that tends to stretch or lengthen the material - acts normal to the stressed area 2. compressive stress- stress that tends to compress or shorten the material - acts normal to the stressed area 3. shearing stress- stress … 1-Groundwater Supply of Cavite Province, Case Study No. Clipping is a handy way to collect important slides you want to go back to later. 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