基于虚场法的铝合金各向异性屈服及硬化属性参数同步表征

变形铝合金板材因轻质、高比强和比模量等优点广泛应用于航空航天工业中,其轧制生产过程引起的塑性各向异性可显著影响板材的变形行为,加大零部件成形精度控制和服役行为数值模拟预测的难度.针对目前常规测试方法表征材料各向异性屈服及各向异性塑性硬化属性所需试验数量多、种类复杂、限制条件多的现状,结合全场变形测量和虚场法,通过一种桥...     

Testing Systems for Ultrasonic Inspection of the Stressed State of Metal Structures and a Microcrack Locator Using Nonlinear Acoustic Effects

Results of field tests of ultrasonic checking systems for the stress-strained state of pipelines on a hydrostand are considered. Biaxial mechanical stresses induced by a combined load, i.e., internal pressure and bending, are determined. Results of testing a microcrack locator that uses nonlinear acoustic effects are presented.__________Translated from Defektoskopiya, Vol. 41, No. 3, 2005, pp. 3–11.Original Russian Text Copyright © 2005 by Samokhvalov, Zaznobin, Sakhno.