循环复杂的实验,以检测,大小,并描述现有液压钢结构的接中的缺陷,使用阶段式阵列超声波测试
Martin T Schultz1, Leslie E Campbell2, Ramsay D Bell3
1U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA.
Ultrasonics
|October 8, 2024
概括
阶段式阵列超声波检测到水力钢结构 (HSS) 接头中的83%的缺陷. 缺陷表征准确率为80%,但尺寸估计显示出显著的不确定性,突出了改进非破坏性测试方法的需要.
科学领域:
- 工程 工程师 工程师 工程师
- 材料科学 材料科学 材料科学
- 非破坏性测试是一种非破坏性测试.
背景情况:
- 关于现有液压钢结构 (HSS) 缺陷检测,尺寸和表征的非破坏性测试 (NDT) 的数据有限.
- 在HSS中接接头是关键领域,需要可靠的检查方法.
研究的目的:
- 评估分相阵列超声波 (PAUT) 的有效性,用于检查代表HSS接头的接钢样本.
- 评估PAUT对各种缺陷类型的检测,大小和表征能力.
主要方法:
- 用PAUT在接钢样本上进行了循环试验.
- 技术人员进行了检查,以确定和测量缺陷.
- 缺陷类型包括平面,体积和层状缺陷.
主要成果:
- 技术人员实现了83%的整体故障检测率.
- 根据缺陷类型和个别技术人员的表现,检测率有很大差异.
- 缺陷大小估计表现出相当大的不确定性,90%的置信度范围从0.52到2.10的长度和0.32到3.59的高度.
- 平面,体积和层状缺陷的特征是80%的准确度.
结论:
- PAUT在检测和描述HSS缺陷方面表现有前途,但准确性是可变的.
- 缺陷大小的重大不确定性需要进一步研究和改进HSS应用的PAUT技术.
- 标准化的协议和增强的培训可以提高HSS检查中的检测和尺寸可靠性.
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