机械制造与自动化2026，Vol.55Issue(3)：16-19,37,5.DOI:10.19344/j.cnki.issn1671-5276.2026.03.004
基于裂纹柔度法的2050-T84铝合金厚板内部残余应力测试研究
Research on Internal Residual Stress Test of 2050-T84 Aluminum Alloy Thick Plate Based on Crack Flexibility Method
摘要
Abstract
This article uses the crack flexibility method to apply the premere test on the internal residual stress distribution inside a 90 mm-thick domestically-produced new 2050-T84 aluminum alloy plate.The results show that the stress exhibits a symmetrical"W"-shaped curve,with the peak compressive stress at a distance of 10 mm from the surface(-31 MPa)and the peak tensile stress at a distance of 3 mm from the middle surface(28 MPa).When the interpolation functions are optimized to 5th and 6th order respectively,the total uncertainty of stress calculation for the two samples is at the minimum.This article provides key data support for material performance evaluation and process optimization in the aviation field.关键词
残余应力/测试/裂纹柔度法/国产2050-T84铝合金厚板Key words
residual stress/test/crack compliance method/domestically-produced 2050-T84 aluminum alloy thick plate分类
机械制造引用本文复制引用
樊龙欣,马红菊,任健,张治中,李勇..基于裂纹柔度法的2050-T84铝合金厚板内部残余应力测试研究[J].机械制造与自动化,2026,55(3):16-19,37,5.基金项目
国家自然科学基金项目(52075251) （52075251）
