INSTRUMENTS AND EQUIPMENT SHOCK TEST METHOD Russian patent published in 2004 - IPC

FIELD: testing facilities.

SUBSTANCE: invention relates to methods of carrying out shock tests of equipment and instruments of complex articles. Proposed method comes to setting standard action in form of shock spectrum of accelerations, forming shock spectrum of acceleration in points of fastening of objects under testing by synthesizing shock excitation signal by means of elementary signals modulated in amplitude by half-sinusoid so that shock spectrum of summary resulting signal approximates required shock spectrum of accelerations at random degree of accuracy, and loading of abject under test with impulse, thus obtained. Basing on shock spectrum of accelerations, transfer functions from all sources of shock actions on article to places of attachment of equipment are determined and then maximum shock spectrum of accelerations from all sources of shock action for places of attachment of equipment is determined after which main carrier frequencies are discriminated from transfer functions and maximum shock spectrum of accelerations and damping factors in places of attachment of equipment are determined by said frequencies after which shock impulse of acceleration is formed according to definite dependence. Shock spectrum, thus formed, coincides with required standard shock spectrum of accelerations on carrier frequencies and differ from required spectrum within the limits of tolerable error.

EFFECT: possibility of complete accounting of mechanical properties of tested articles.

2 dwg