Laser cladding additive fatigue life prediction method and system based on microdefect distribution

• Main Authors: WANG XUN, XU LIANYONG, HAN YONGDIAN, ZHAO LEI
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS

The invention discloses a laser cladding additive fatigue life prediction method and system based on microdefect distribution, and the method comprises the steps: carrying out a fatigue test on a prepared laser cladding additive component, collecting fatigue test curve data, and obtaining a first index of the laser cladding additive component under the fatigue test; performing microscopic observation on the fracture of the laser cladding additive component after the fatigue test to obtain a second index of the laser cladding additive component under the fatigue test; based on the improved SWT model and the stress intensity factor model, generating a damage parameter according to the first index and the second index; based on the damage parameters, a fatigue life prediction model is constructed and used for predicting the life of the laser cladding additive component; according to the method, the geometric parameters of the additive defects are accurately quantified, the influence of size, shape and position f