Improved type breakage failure stress testing method of adhesion test piece

• Main Authors: LOU FEI, NA JINGXIN, MU WENLONG, WANG GUANGBIN, PU LEIXIN, TAN WEI, SHEN HAO, LUAN JIANZE, GAO YUAN, FENG YAO
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses an improved type breakage failure stress testing method of an adhesion test piece. The improved type breakage failure stress testing method comprises the following steps: 1, performing quasi-tensile test on n adhesion abutting joints with different adhesive layer thicknesses to acquire initial breakage failure loads and initial breakage failure points of the n adhesion abutting joints; 2, building finite element models of the adhesion abutting joints of which the test sizes are identical and the adhesive layer thicknesses are different, applying the initial failure loads into the finite element models to ensure that an application position corresponds to the quasi-tensile test to acquire the breakage failure stresses of the unit corresponding to the initial breakagefailure points, wherein the failure stress comprises components, including sigma 1, sigma 2 and sigma 3, of three main stresses; and 3, acquiring the breakage equivalent stresses of the adhesion abutting joints with differen