CT Failure Modeling Experiment Data - 1
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Transcript of CT Failure Modeling Experiment Data - 1
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CT Failure ModelingExperiment DataMary Catherine Whitney29 May 2013
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MethodVelocity Test
Configure bow to launchrod at 50mph
Shoot rod verticallydown into tube against arock
Shoot rod horizontallyinto smaller tube againsta rock
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Method
Gradual Displacement Test
Apply force to containedrod until it is displaced a
set amount of inches
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Calibration of bow
At 50mph (73.3 fps) rod should travel 41 ft ( = 2 )
Rod is at initial height of 60 in To achieve this distance, bowstring pulled back 20-21 in Guide tube set up against a rock to simulate bottom of well or
concrete shoe
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Strain from GradualDisplacement test
Total Length: 48 in Compression 3, 4in Axial Strain
Compressed 3 in 3/48 = 0.0625
Compressed 4 in 4/48 = 0.0833
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Test 1 practiceVertical Bow TestGuide Tube ID: 4.25 inPull Length: 21 inRod was previously used for calibration,results may not be representative
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Test 2
Vertical Bow TestGuide Tube ID: 4.25 inPull Length: 20 in
Rod centered before being shot
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Test 4Vertical Bow TestGuide Tube ID: 4.25 inPull Length: 21 inRod rested on side of tubebefore being shot
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Test 5
Vertical Bow TestGuide Tube ID: 4.25 inPull Length: 20 inRod rested on side of tubebefore being shot
Bottom Rod
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Test 6
Horizontal Bow TestGuide Tube ID: 0.5 inPull Length: 21 inWorked on third trial
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Test 7 - woodVertical Bow TestGuide Tube ID: 4.25 inPull Length: 21 inVery high reboundBow was not calibrated to shoot wood at
50mph so velocity may be different
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Test 8
Horizontal Bow TestGuide Tube ID: 2 inPull Length: 21 inRod impacted rock
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Test 9, 10-11
Gradual Force TestGuide Tube ID: 4.25 inCompression Length
Test 9: 3in
Tests 10-11: 4inBent on side with changingforce
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Conclusions
Velocity Test
Whole rod buckles,bottom is permanently
deformed while reststraightens out Test 6 had smallest radial
clearance, could beaccurate representation
Gradual Displacement Test
Permanently deformednear top where force
occurs Due to friction force
creating lockup
![Effect of Radiation Exposure on the Retention of ......previously, by testing to failure [4-6]. The given TID exposure level refers to this experiment, and is less than the failure](https://static.fdocuments.net/doc/165x107/5f2d97d28d8e4c393172c1d4/effect-of-radiation-exposure-on-the-retention-of-previously-by-testing.jpg)
