陕西师范大学学报（自然科学版）2026，Vol.54Issue(2)：19-31,13.DOI:10.15983/j.cnki.jsnu.2026210
高温合金锻件三向残余应力场的超声无损表征与成像方法研究
Research on ultrasonic nondestructive characterization and imaging methods for tri-axial residual stress fields in high-temperature alloy forgings
摘要
Abstract
To address the challenge of non-destructively characterizing deep three-dimensional residual stress fields in critical load-bearing hot-section components of domestically developed large wide-body aircraft engines,this study investigates ultrasonic-based methods for non-destructive residual stress characterization and imaging.An ultrasonic acoustoelastic theoretical model capable of describing the influence of arbitrary three-dimensional stresses is established,revealing a quantitative relationship between the relative velocity variations of ultrasonic bulk longitudinal waves and triaxial stresses.By developing an ultrasonic wave-propagation simulation framework for components containing residual stresses,multi-angle ultrasonic transmission data are designed and acquired for representative high-temperature alloy forgings.Two imaging approaches are proposed:a tomographic imaging method based on iterative reconstruction algorithms and an inversion imaging method based on neural networks.The results demonstrate that the tomographic approach can sensitively capture the characteristic"tensile core-compressive surface"stress distribution within the forging and exhibits high sensitivity to process-induced asymmetric distributions.The neural network method,in contrast,shows strong nonlinear fitting capability for complex patterns and yields smaller average errors in high-stress regions.The two methods are complementary,their inversion results remain at the same stress level as the ground truth and effectively reflect the magnitudes and distributions of radial,circumferential,and axial residual stresses within the actual forging.The proposed methodology provides important data support for ensuring the dimensional stability,reliability,and in-service safety of critical load-bearing hot-section components in aero-engines.关键词
超声表征/残余应力场/层析成像/神经网络Key words
ultrasonic characterization/residual stress field/tomographic imaging/neural network分类
数理科学引用本文复制引用
李岩锴,袁冰冰,邹睿,卢敬远,王岢,余旭东,邵照宇,邓明晰..高温合金锻件三向残余应力场的超声无损表征与成像方法研究[J].陕西师范大学学报（自然科学版）,2026,54(2):19-31,13.基金项目
国家自然科学基金(12134002,12374429,12004026) （12134002,12374429,12004026）
中国科协青年人才托举工程项目(2020QNRC002) （2020QNRC002）
