Method for testing residual stress of aviation aluminum alloy T-shaped forge piece

• Main Authors: ZHANG TAO, ZHANG LONG, WU YUNXIN, BAO MINGSEN, HE YONGBIAO, ZHONG JUE, GONG HAI
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The invention provides a method for testing residual stress of a T-shaped aeronautical aluminum alloy forge piece, which comprises the following steps: 1, carrying out finite element simulation on the T-shaped aeronautical aluminum alloy forge piece to be tested, and establishing a finite element model, 2, determining a test path and arranging test points, 3, designing a sampling volume size formula of the test points, and 4, calculating the residual stress of the T-shaped aeronautical aluminum alloy forge piece. 4, obtaining the residual stress of each test point determined in the step 2 in the X direction, the Y direction and the Z direction through a neutron diffraction test, 5, obtaining the residual stress errors of the test points in the X direction, the Y direction and the Z direction and correcting the residual stress corresponding to the residual stress errors, and 6, correcting the finite element model. According to the method, the test path of the neutron diffraction test is determined through fini