file Lab 3 - Pure Bending Test

.xlsx

School

New Jersey Institute Of Technology *

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Course

MECH 237

Subject

Mechanical Engineering

Date

Dec 6, 2023

Type

xlsx

Pages

5

Uploaded by DeanLemur3751

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Strain Measurements at Applied Load P during L Loading (lb) 2000 4000 6000 4000 8.08 1 -223 -447 -667 -452 6.69 2 -150 -266 -416 -263 5.93 3 -111 -220 -329 -223 5.12 4 -70 -138 -204 -137 4.5 5 -41 -79 -111 -80 3.77 6 7 11 20 14 3 7 49 101 149 98 2.18 8 95 189 279 189 1.4 9 134 268 401 266 0.4 10 210 418 625 422 0.136 0.269 0.402 0.272 Constants Theoretical Microstrain a (in) 48 Load Moment 57.6 P M=P*a Mc/I Mc/EI depth (in) 8 (lb) lb*in (psi) (in/in) c (in) 4 2000 96000 6666.666666667 0.00022989 E (psi) 29000000 4000 192000 13333.33333333 0.00045977 L (in) 150.75 6000 288000 20000 0.00068966 Elevation of Strain Gauge [in.] Unit: micro- strain+C:C ( x 10⁻⁶ in./in.)+J4 Measured Deflection (in) Theoretical Stress Theoretical Strain I (in 4 ) Note: You are expected to plot five charts (below shows two Specifically, three charts for loads of 2000 lbs, 4000 lbs, and unloading phase. The linear regression is performed for the
Loading and Unloading Phases Load Midspa Unloading (lb) P Theoretical 2000 0 (lb) (in) -227 -6 2000 0.141 -107 32 4000 0.282 -114 -8 6000 0.423 -71 -3 4000 0.282 -46 -11 2000 0.141 3 -7 0 0.000 52 -4 93 -9 128 -11 213 -7 0.139 0.00 229.8850575 459.7701149 689.6551724 Unit: micro-strain ( x 10⁻⁶ in./in.) Note: The table on the left may help you plot the theoretical strain distribution under each load during both the loading and unloading phases. Strain to Microstrain (10 6 ) (10 -6 in/in) o example charts) to compare the theoretical and experimental strain distributions. d 6000 lbs during the loading phase; two charts for 4000 lbs and 2000 lbs during the e experimental strain data.
an deflection Error rate Measured (in) (%) 0.136 3.68 0.269 4.94 0.402 5.22 0.272 3.79 0.139 1.44 0.00 0.00 average 3.81 standard deviation 1.89 Note: This table is for you to tabulate the theoretical midspan defection and perform error analysis for defection measurements. 0 2 4 6 8 10 -250 -200 -150 -100 -50 0 50 100 150 200 250 7 f(x) = 44.3636363636364 x − 254 R² = 0.992111235906375 Chart Title Axis Title Axis Title
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