Bending Stress Full Guide.docx - Laboratory Experiment 1...

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Laboratory Experiment 1 – Bending stress Requirements – Complete a logbook showing Recorded data from the experiment The theoretical calculations with all working An analytical comparison of the experimental and theoretical data A discussion on sources of error – Work to be submitted electronically Via BB
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Objective: To measure the direct stress due to bending in a loaded beam and compare it with the calculated value. 3
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Apparatus 1. Strain gauge bridge 2. Loading rig 3. weight carrier 4. weights 4 5. Strain gauged beam 6. Vernier calliper 1 5 3 2 4 7 6
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Beam Parameters ? 1 = 19.9𝑚𝑚 ? 1 = 12.74𝑚𝑚 ? 𝑓𝑙𝑎𝑛𝑔𝑒 = 1.66𝑚𝑚 ? 𝑤𝑒? = 1.57𝑚𝑚 ? 2 = ? 1 2 ? 𝑤𝑒? ? 2 = ? 1 − 2 × ? 𝑓𝑙𝑎𝑛𝑔𝑒 𝐸 = 69 𝐺𝑃𝑎
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Beam configuration 6 5 P 703 mm 1000 mm 500 mm 60 mm Strain Gauges
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Procedure 1. Measure the cross sectional dimensions of the beam provided.
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