This article presents diagnostic tests of wire ropes using passive magnetic methods. The study used two types of wire ropes with different constructions and diameters. Defects of various depths were modeled in the ropes, which reflected the degree of loss of metallic cross-section. After a series of measurements, a correlation was observed between the amplitude of the module signal and the degree of damage to the rope. The signals were recorded with the advantage of the SpinMeter-3D magnetometer. The obtained results were subjected to the extraction of features, the analysis of which allowed the damage to be identified.
Steel wire ropes are the vital load-bearing element in many rope transport devices, such as mine hoists, personal lifts, bridges and cableways. Non-destructive fault detection is a crucial issue for safety and reliability. This paper presents a comprehensive review covering three areas: damage mechanisms for steel wire ropes, physical phenomena used for diagnostics of steel wire ropes and practical applications of magnetometers. The advantages and disadvantages of each group of sensors, such as the induction coil, Hall element, magnetoresistance and optically pumped magnetometers, are presented. The author indicates the direction of the development of signal analysis techniques. In summary, the challenges and future directions for the development of wire rope flaw detection in practical applications are presented, especially considering the future of passive magnetic methods.
The technical state of steel wire ropes has a decisive impact on the safety of people using the equipment in which they are installed. The basis for increasing safety is the ability to assess the condition of the working steel wire. The article presents the use of magnetometric sensors to determine the relationship between the number of steel wire rope bends and its magnetic field induction value. This knowledge, referred to ropes working on real objects, allows to determine the state of stress prevailing in them as well as their condition. Keywords: non-destructive testing, magnetic flux leakage, steel wire rope, bending Streszczenie: Stan techniczny lin stalowych ma decydujący wpływ na bezpieczeństwo ludzi korzystających z urządzeń, w których są zainstalowane. Podstawą zwiększania bezpieczeństwa jest umiejętność oceny stanu kondycji pracującej liny stalowej. W artykule przedstawiono wykorzystanie czujników magnetometrycznych do określenia zależności pomiędzy liczbą przegięć liny stalowej a jej wartością indukcji pola magnetycznego. Wiedza ta, odniesiona do lin pracujących na obiektach rzeczywistych, pozwala określić panujący w nich stan naprężeń a także ich kondycję. Słowa kluczowe: badania nieniszczące, magnetyczne pole rozproszenia, lina stalowa, przeginanie
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