Method for progressively recognizing load of damaged cable based on angular displacement strain monitoring process

• Main Authors: HAN JIAYI, HAN YULIN
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention provides a method for progressively recognizing the load of a damaged cable based on the angular displacement strain monitoring process. According to the method, based on the strain monitoring process, whether a mechanical calculation benchmark model of a cable structure needs to be updated or not is determined through monitoring the angular displacement of a bearer, the temperature of the cable structure and the ambient temperature. After that, the mechanical calculation benchmark model of the cable structure, with the angular displacement of the bearer, the temperature of the cable structure and the ambient temperature being taken into account, is obtained. On the basis of the above model, a numerical value variation matrix of a monitored quantity with unit damage is obtained through calculation. Finally, according to the approximately linear relationships between the current numeric vector of the monitored quantity and the current initial numeric vector of the monitored quantity, the numerical value variation matrix of the monitored quantity with unit damage and the current nominal damage vector of an unknown to-be-evaluated object, the non-inferior solution of the current nominal damage vector of the to-be-evaluated object is figured out. In this way, the health status of a core to-be-evaluated object can be recognized.