计量学报2024，Vol.45Issue(6)：881-889,9.DOI:10.3969/j.issn.1000-1158.2024.06.14
泊松比变化对基于波速混凝土损伤计算的影响
Effects of the Variation of Poisson's Ratio on the Calculation of Concrete Damage Based on Wave Velocity
摘要
Abstract
The method of calculating material damage using ultrasonic wave velocities are widely used,however the variation in Poisson's ratio was often ignored in past researches.The effect of Poisson's ratio variations on damage calculation of concrete based on ultrasonic wave velocities was investigated.Firstly,the Poisson's ratio correction factor was introduced into the wave velocity-based damage calculation equation through theoretical analysis.Secondly,the necessity of considering Poisson's ratio variations was verified by conducting axial compression tests on concrete column specimens.Finally,a Poisson's ratio correction factor calculation method was proposed on the basis of the experimental data.The results show that the average relative error between the calculated value based on wave velocity and true value of concrete damage is up to 73％when the effect of Poisson's ratio variation is ignored,and the error is reduced to 21％by applying the Poisson's ratio correction factor.These findings suggest that it is advisable to include the Poisson's ratio correction factor to improve the accuracy of the calculation when calculating concrete damage based on wave velocity.关键词
超声检测/材料损伤/超声波波速/泊松比/修正系数/混凝土Key words
ultrasonic testing/material damage/ultrasonic wave velocity/Poisson's ratio/correction factor/concrete分类
通用工业技术引用本文复制引用
徐佳慧,杨予,刘恒,周强兵..泊松比变化对基于波速混凝土损伤计算的影响[J].计量学报,2024,45(6):881-889,9.基金项目
国家自然科学基金(52178365) （52178365）
