Device and method for testing fatigue performance of seam allowance of cylinder hole of engine cylinder body

• Main Authors: WANG GUANGYING, ZHENG LIXIN, GUO DONGTAO, LI LEI
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention belongs to the technical field of automobile engines, and particularly relates to an engine cylinder hole spigot fatigue performance testing device and method, and the device comprises a loading device which is used for applying a radial pressure load to a fixed spigot single sample, so that the spigot single sample bears a bending load; the sample fixing device is used for clamping or supporting the spigot single-piece sample, so that the spigot transition fillet surface of the spigot single-piece sample is in a maximum normal stress state when the spigot single-piece sample bears a bending load; wherein the spigot single-piece sample is a cylinder body substrate cut along the circumferential direction of a cylinder hole of the engine cylinder body, and the spigot single-piece sample reserves the structural characteristics of the inner cylindrical surface of the cylinder hole. A whole cylinder hole sample is replaced by the spigot single sample, the problem that the loading capacity of a testin