Browsing by Author "Lempriere, B. M."

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    The double and single shear strengths of avdel light alloy blind rivets in DTD 546 b aluminium alloy sheet
    (College of Aeronautics, 1957-04) Lempriere, B. M.
    Tests have been performed to compare the double- and single-shear strengths of joints in DTD 546b light alloy sheets using Avdel blind rivets. The tests were an extension of work done on solid rivets, and followed conventional procedures. The double-shear proof and ultimate strengths were found to be appreciably better than the single-shear strengths over a useful range of sheet thickness/rivet diameter ratio. The effect of manufacturing tolerance was examined and found to be important, though adherence to the rivet manufacturer’s recommended procedures ensures good strength. The above conclusions lead to a consideration of the physical behaviour of the joints which is seen to differ in three ranges of thickness/diameter ratio.
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    Thermal stresses in a box structure
    (College of Aeronautics, 1958-07) Lempriere, B. M.
    This interim note presents an analysis, using an energy method, of the thermal stresses in a finite length box structure resulting from uniform skin heating. The solution depends upon an eighth order differential equation with constant coefficients. Numerical solutions are given for comparison with existing and projected experiments