System for evaluating tensile damage of in-service 16Mn steel force-bearing part by adopting catastrophic model

Abstract

The invention discloses a system for evaluating the tensile damage of a 16Mn steel force-bearing part based on acoustic emission information, and a tensile damage evaluating system comprises a sensor information collecting unit (1), a filtering unit (2), an acoustic emission catastrophe theory analyzing unit (3) and a pre-warning unit (4). The acoustic emission technology is adopted for monitoringthe tensile process of the 16Mn steel force-bearing part, and the state transformation is judged and pre-warned by adopting the catastrophe theory. According to the monitoring result, the conversionfrom tensile elasticity damage state to yield damage state of the 16Mn steel force-bearing part can be judged, and then pre-warn is given, thus reducing the loss of equipment, personnel casualties andthe like.

Description

technical field [0001] The invention relates to an assessment of tensile damage of load-bearing parts in large-scale mechanical equipment in ports. More specifically, it refers to an evaluation system for tensile damage of in-service 16Mn steel (16 manganese steel) load-bearing parts using the acoustic emission catastrophe model. Background technique [0002] 16 manganese steel is often used as the key load-bearing parts for shoreside equipment in large-scale mechanical equipment in ports: such as ship loaders, ship unloaders, grabs, etc. After the shore equipment has been used for a period of time, the damage state of the 16 manganese steel as the main bearing part will have an important impact on the service life of the entire shore equipment. [0003] 16Mn steel (16 manganese steel) is a low-alloy steel developed in combination with our country's resource conditions (manganese is a rich element in our country), and has been widely used. 16Mn steel load-bearing parts oft...

AI Technical Summary

Problems solved by technology

[0007] 2. The task is heavy. With the expansion of production scale and the lag of crane update, the work of many cranes is becoming more and more heavy, and overloading occurs from time to time;

[0008] 3. The current damage detection methods are immature. The partial sampling inspection of cranes by means of ultrasonic testing and magnetic particle testing is blind, prone to missing inspections, and the inspection cycle is long, with heavy workload and expensive costs;

[0009] 4. The early warning and evaluation system is not perfect. The analysis and discrimination technology currently applied cannot make accurate early warning and safety assessment for the damage of the load-bearing parts of the crane. Tensile damage is one of the main damage modes of load-bearing parts of large shore cranes in ports

Images