相关实验视频

Updated: Jun 9, 2025

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
11:34

Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography

Published on: May 15, 2017

11.1K

在板块结构中使用Lamb波的几何相进行缺陷定位.

Guangdong Zhang1, Tribikram Kundu2, Pierre A Deymier3

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

Ultrasonics
|October 23, 2024
PubMed
概括

使用几何相变指数 (GPC-I) 的新拓声学 (TA) 传感方法可以在板结构中更好地定位缺陷. 与传统的速度差 (VD) 或幅度比 (AR) 方法相比,这种技术显示出更高的灵敏度和准确性.

关键词:
缺陷定位 缺陷定位几何相位变化指数 (GPC-I)羊羔的波浪在浪叫着.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

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

13.8K
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

21.7K

相关概念视频

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
876
Deflection of a Beam01:19

Deflection of a Beam

Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
237
Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
162
Plastic Deformations01:14

Plastic Deformations

It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
82