RA-AF-E rock material brittle failure crack classification method based on acoustic emission parameters

• Main Authors: XIA YUANYOU, WANG GANG, YAN YAOFENG, LIU CHANGHAO, LIN MANQING, LIU XIQI
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses an RA-AF-E rock material brittle failure crack classification method based on acoustic emission parameters. The method comprises the following steps of step 1, taking an energyparameter of an acoustic emission positioning point as an intensity characteristic of a crack, and calculating an intensity value E of each rupture point position and a corresponding RA value and anAF value; 2, representing each point in a three-dimensional space taking RA-AF-E as a coordinate axis; 3, according to the energy characteristics of different fracture types and the corresponding acoustic emission data characteristics, the fracture point types being classified through a space plane; and 4, projecting the divided areas into an RA-AF plane, and establishing a more accurate crack type classification method. The method is simple and easy to implement, overcomes defects that an original method is unclear in fracture division, incomplete in fracture type division, multiple in influence factors and the like,