procedure for the calibration of a transducer in dynamic conditions for a measuring apparatus of resistance during the impact and test used in this procedure.

摘要

a procedure for the calibration of a transducer in dynamic conditions for a device for measuring the resistance during the impact.when the transducer is associated with a body (6) movable along a path (a) comprises the operations of: prepare along the trajectory (to) two surfaces (11th,12) parallel to and at a distance (d) note, determine the speed of the body (6) before the collision with the first surface (11th),to evaluate the performance of force with respect to time by means of the transducer, to calculate the time between collisions of the body (6) with surfaces (11th, 12th).select a value (fm) of the impact with the first surface (11th), calculating a virtual distance between surfaces (11th, 12th) from the pattern of forcecompare the distance with the distance virtual note (d) for determining a correction coefficient (k) to be applied to the value of the force (fm), so as to ensure equality between the distance virtueale and the distance (note d). the coefficient (k) makes it possible to obtain a proper value of the strike force (fc) in relation to the dynamic load conditions. (figure 1 and 3)