#Example strain history no. 2 Add strain to get full yield # #ID= XYZ5134 #Tube Identification #Recording: When one of the measured variables changes significantly all the # other variables must be logged also, regardless of whether they have # changed or not. Also the point immediately before the change must # also be logged. #Material= merged3_SAE950X_fitted.html #material fatigue file for this segment #SEGMENT= 1030 # position of segment measured from ??? Reel Zero ? #Tube Cross-section Co-ordinates: # X parallel to sheave and Reel spin axis # Y Perpendicular to X, positive = away from Sheave # em Membrane strain # eb Bending strain of tube side furthest from sheave center of rotation # P Internal hydraulic pressure, mpa # Pos Position of segment in feet as measured from Reel exit point # Measurement begins as segment leaves Reel. # Yod Outside diameter of segment cross-section in Y direction. # Yid Inside diameter of segment cross-section in Y direction. # Xod Outside diameter of segment cross-section in X direction. # Xid Inside diameter of segment cross-section in X direction. # # Q1: Is in necessary or possible to track rotation/twist ? # Q2 Is in necessary or possible to track extension or cyclic ratcheting of tube ? # # "j.b." in comments below = "just before" # Position is measured from reel lift off. ? A minus number means still on reel. # Data numbers are read in free format. Comment lines can be inserted between data # lines using "#" or at end of data line. #secs? strain strain mpa ft? mm mm mm mm #time em eb P Pos Yod Yid Xod Xid 0 0 0 0 -1030 102 72 101 73 #not on reel yet. Laying in yard. 598. 0 0 0 -1030 102 72 101 73 #Just before on reel bend #A 601. 0 0.0080 0 -1030 102 72 101 73 #On Reel. Bent to radius. 999. 0. 0.0080 0 -1030 102 72 101 73 #j.b. Press. test on board 1000.10 0. 0.0080 70 -1030 102 72 101 73 #Press. test on board 1298. 0. 0.0080 70 -1030 102 72 101 73 #Just before end Press. 1300.02 0. 0.0080 0 -1030 102 72 101 73 #end press. test 1598 0.0 0.0080 0 -1030 102 72 101 73 #j.b. Package hangs on tube 1600.32 0.001 0.0080 0 -1030 102 72 101 73 #Package weight hangs on tube 2048.00 0.001 0 0 -1030 102 72 101 73 #Just before leaving reel #B 2050.00 0.001 0 0 10 102 72 101 73 #10 ft off reel. Position B 2054.5 0.001 0. 0 54.5 102 72 101 73 #j.b. Start on Sheave #C 2055.07 0.001 0.010 0 55 102 72 101 73 #Start on Sheave 2061.5 0.001 0.010 0 71.5 102 72 101 73 # End of Sheave curve #C' 2062.19 0.001 0.0 0 72 102 72 101 73 #Leave Sheave radius #D 2500.01 0.001 0.0 0 1400 102 72 101 73 #insert wave starts 2505 0.0011 0.0 0 1402 102 72 101 73 #insert wave 2515 0.0009 0.0 0 1404 102 72 101 73 #insert wave 2525 0.0015 0.0 0 1402 102 72 101 73 #insert wave 2535 0.0008 0.0 0 1404 102 72 101 73 #insert wave 2545 0.0018 0.0 0 1402 102 72 101 73 #insert wave 2555 0.0006 0.0 0 1404 102 72 101 73 #insert wave 2568.63 0.001 0.0 0 1406 102 72 101 73 #insert wave ends #Add an axial strain to get full section yield 3010.24 0.005 0.0 0 1402 102 72 101 73 #Go to section Yield #4000.79 0.001 0.0 0 2504 102 72 101 73 #reached target depth #4000.79 0.001 0.0 0 2504 102 72 101 73 #reached target depth #4810.81 0.001 0.0 28. 2504 102 72 101 73 #pump starts #4948.05 0.001 0.0 28. 2504 102 72 101 73 #pump starts #4950.23 0.0011 0.0 28 2504 102 72 101 73 #wave insert #4963. 0.0009 0.0 28 2504 102 72 101 73 #wave insert #4973. 0.001 0.0 28 2504 102 72 101 73 #wave insert #5645. 0.001 0.0 28 2504 102 72 101 73 #pump stops #5645.31 0.001 0.0 0 2504 102 72 101 73 #6810. 0.001 0.0 0 2504 102 72 101 73 #6810.23 0.001 0.0 28. 2504 102 72 101 73 #pump starts #7645. 0.001 0.0 28 2504 102 72 101 73 #pump stops #7645.80 0.001 0.0 0 2504 102 72 101 73 #pump stops #9810.63 0.001 0.0 28. 2504 102 72 101 73 #pump starts #15645.99 0.001 0.0 0 2504 102 72 101 73 #pump stops ## back up #16000.19 0.001 0.0 0 2503 102 72 101 73 #start reel back #19000.19 0.001 0.010 0 72 102 72 101 73 #back on Sheave radius #19010.07 0.001 0.0 0 55 102 72 101 73 #leave Sheave towards Reel ## Measure tube ? #19015.00 0.001 0 0 10 101 72 99 73 #10 ft off reel. Position B ##A #19017.32 0.001 0.0080 0 -1030 101 72 99 73 #Back on Reel #19298.05 0.001 0.0080 0 -1030 101 72 99 73 #Package removed from tube #19300.10 0. 0.0080 0 -1030 101 72 99 73 #Package removed from tube # ##How to monitor ratcheting of tube? # #