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# Physics Lab Test Outcomes Physics Laboratory Test Outcomes Essay

School No . 11365048

Contents Intro Sample times results Test y results Elasticity and Elastic Limit Yield Level and Plasticity Ultimate Ultimate tensile strength Stiffness Ductility Brittleness Hooke's Law Young's Modulus Conclusion Sample times graph Test y graph Sample z graph List of references Web page 2 Webpage 3 Web page 4 Page 5 Site 5 Webpage 6 Page 6 Webpage 7 Web page 7 Webpage 8 Web page 8 Webpage 9 Page 11 Page 12 Site 13 Web page 14

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College or university No . 11365048

The Tensile Test I have already been provided with lab results from tensile tests accomplished on a few samples of components x, con and z. My process is to use this data to look for the values of modulus of elasticity, limit of proportionality, ultimate tensile strength and other important facts about every material. I will examine the behaviour of each sample below tensile weight by means of stress-v's-strain tables and graphs, then identify every single material. In order to calculate the cost of stress, we need to first determine the get across sectional place (CSA) of each and every material examined. Each test is of rectangular cross section 20mm simply by 1mm. CSA = 20mm x 1mm CSA (m^2) = (20x10^-3) x (1x10^-3) = 20 x 10^-6 m^2 or perhaps = zero. 00002 m^2 I can use the CSA together with the test results Plus provided with to calculate the instantaneous stress and strain values of each sample after each tensile load is usually applied making use of the following formulae: Stress (Пѓ) = Pressure (F) / CSA Pressure (Оµ) = Extension (x) / Initial Length (L) As an example, Let me show my calculations in the stress and strain ideals for the first insert applied on check sample back button, then I will display the remainder of my results in tables. Пѓ = N / THE CSA = 1x10^3 / 20x10^-6 = 50x10^6 Pa Оµ (%) = (x / L) times 100 = (0. twenty four / 375) x 95 = 0. 128% Site 2 of 15

University No . 11365048

Results to get sample times length 375mm CSA of 20x10^-6 m^2 Load Utilized (Kn) Expansion (mm) Anxiety (MPa) Pressure (%)

1 . 0 installment payments on your 0 3. 0 four. 0 five. 0 six. 0 six. 0 several. 5 eight. 0 eight. 5 almost 8. 3 8. 0 six. 0 6. 1

zero. 48 0. 60 0. 70 0. 80 zero. 85 zero. 95 1 . 27 1 . 60 2 . 65 a few. 50 several. 00 several. 90 almost 8. 70 being unfaithful. 10

55 100 150 200 two hundred fifty 300 350 375 400 425 415 400 350 305

zero. 128 0. 160 0. 187 0. 213 zero. 227 0. 253 zero. 339 zero. 427 0. 707 1 ) 467 1 ) 867 installment payments on your 107 2 . 320 installment payments on your 427

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University No . 11365048

Results to get sample con Length 550mm CSA 20x10^-6 m^2 Fill Applied (Kn) Extension (mm) Stress (MPa) Strain (%)

2 . zero 4. 0 6. 0 8. 0 9. some 9. a couple of 9. a couple of 10. 0 11. 0 12. 0 14. zero 12. 0 10. 0 8. zero

0. 62 0. 80 1 . 00 1 . 18 1 . 30 1 . 60 1 . 62 1 . seventy five 2 . 10 2 . 45 5. 00 7. twenty 7. 25 7. 27

100 200 300 four hundred 470 460 460 500 550 six hundred 700 six-hundred 500 400

0. 109 0. 145 0. 182 0. 215 0. 236 0. 273 0. 291 0. 318 0. 382 0. 436 0. 909 1 . 309 1 . 318 1 . 322

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University Number 11365048

I would now love to discuss the different important levels of the ensure that you also some relevant mechanical homes of the elements used. This is certainly best done by analysing rato grammatic effects. Elasticity and Elastic Limit Elasticity is actually a physical phenomenon that a few materials demonstrate. These elements will deform immediately upon loading, then simply return to their original shape when the load is taken off (Roylance, 2000). Hibbeler (2010) suggests that when a material with length by is used to aid a physique, then the length of the material changes in immediate proportion to the force acting on it. Quality results pertaining to sample elements x and y screen this feature in the linear region among points A and B on their particular graphs. In this article you will find some materials (e. g. cast straightener and concrete) for which the elastic stage of the stress-strain curve just isn't linear (Callister, Rethwisch, 2008), sample unces is a good example of this because there is no geradlinig region in any way. Point N on both x and y's charts represents the Elastic Limit, beyond this kind of stress value a permanent expansion occurs plus the material has ceased to be considered supple (Strike, 2011). As sample z does not have defining features between items 0 and E it is impossible to pinpoint a great elastic limit other than in the point of destruction, which is point Elizabeth. Yield Stage and...