NON-DESTRUCTIVE EVALUATION OF ROPES BY USING TRANSVERSE IMPULSE VIBRATIONAL WAVE METHOD

摘要

ABSTRACTA non-destructive method for evaluating ropes, cables, andstrands or flaws and tension. The method permit detectingflaws by recognizing certain vibrational wave amplitude anddistribution patterns resulting from striking a test subjectwith a transverse force . Tension on a test subject iscalculated by measuring propagation velocity of the vibrationalwaves through the test subject. An apparatus is provided whichproduces vibrational waves in a test subject, measures theamplitude and time distribution of the waves, and displays themeasurements for analysis.