Peak dynamic stress calculator

Details Peak dynamic stress calculator Peak dynamic stress calculator

G - Physics

01

L

354/28

G01L 1/04 (2006.01) G01L 1/22 (2006.01)

Patent

CA 1165880

ABSTRACT OF THE DISCLOSURE This invention relates to an apparatus for automatically determining various stresses measured by a rectangular strain gauge rosette. The invention receives signals from the rosette and provides signals representative of the maximum principal stress, the minimum principal stress and the maximum shear stress, the peak maximum principal stress, the minimum principal stress at the instant when the maximum principal stress is peaking, and the peak value of the shear stress. A first analog signal processor provides stress signals representative of the maximum principal stress, minimum principal stress and maximum shear stress for each instantaneous input signal amplitude from each arm of the strain gauge rosette, and a second signal processor receives the stress signals and provides output signals representative of the peak maximum principal stress, minimum principal stress at the instant of peak maximum principal stress, and peak maximum shear stress. Using the invention a designer of a vehicle or other apparatus normally subject to stress can observe the aforenoted stresses immediately during a test and either repeat the test or very slightly alter it to affirm the data or to detect subtle differences, knowledge of which would otherwise be lost using prior art techniques.

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