相关实验视频

Updated: May 2, 2026

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

使用拓声学传感和侧带峰值计数来监测板块的缺陷

I-Ting Ho¹, Krishna Muralidharan¹, Keith Runge¹

¹New Frontiers of Sound Science and Technology Center, University of Arizona, Tucson, AZ 85721, USA; Department of Materials Science and Engineering, University of Arizona, Tucson, AZ 85721, USA.

|January 19, 2025

概括

本研究引入了一种新的非破坏性检查方法,该方法结合侧带峰值计数 (SPC) 和拓声学 (TA) 来检测和定位钢板损坏. 综合方法提高了缺陷检测灵敏度和结构材料评估的空间分辨率.

科学领域:

材料科学材料科学材料科学
声学声学在声学方面
非破坏性测试是指非破坏性测试.

背景情况:

结构完整性评估对于材料安全至关重要.
现有的非破坏性测试方法在损坏检测的灵敏度和空间分辨率上有局限性.
先进的声学技术为改进材料表征提供了潜在的潜力.

研究的目的:

开发和展示一个集成的非破坏性检查方法.
将基于非线性超声波的侧带峰值计数 (SPC) 与拓声学 (TA) 传感相结合.
为了全面描述不同损坏程度的钢板的声学反应.

主要方法:

使用侧带峰值计数 (SPC) 和拓声学 (TA) 传感.
应用洛克韦尔硬度入器,在钢板中创建受控损伤 (1,3,5个入).
在一个频率范围 (50 kHz800 kHz) 中分析了声响应,评估了全球和本地几何相和SPC-index (SPC-I).

主要成果:

结合的SPC和TA技术显示出提高了检测缺陷的灵敏度和空间分辨率.
全球几何阶段随着缩影的数量增加而增加.
局部几何相的空间变化和SPC-I,特别是在300kHz以下,准确地确定了缩位置.

结论:

集成的SPC-TA方法有效地检测和空间解决钢板的缺陷.
这种方法为评估结构材料损坏提供了一个有前途的技术.
该方法提高了材料完整性评估的非破坏性检查能力.

关键词:

这是一个二维热图.几何阶段的几何阶段在SPC-I技术上.结构性健康监测结构性健康监测拓声学传感拓声学传感

更多相关视频

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

相关概念视频

Root Mean Square

Root Mean Square

If in an experiment, data values have a probability of being both positive and negative, neither the arithmetic mean, the geometric mean, nor the harmonic mean can be used to calculate the central tendency of the data set. In particular, if the positive and negative values are equally likely, the arithmetic mean is close to zero.
For example, consider the velocity of gas molecules in a container. The gas molecules are moving in different directions, which might impart positive and negative...

Bode Plots Construction

Bode Plots Construction

The Bode plot is an essential tool in control system analysis, mapping the frequency response of a system through a magnitude plot and a phase plot, both against a logarithmic frequency axis. To construct a Bode plot, consider the transfer function H(ω):

Unsoundness of Aggregate due to Volume Change

Unsoundness of Aggregate due to Volume Change

Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...

Differential Leveling

Differential Leveling

Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...