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一个混合的理论-数值-实验框架,用于使用引导波的薄壁空心复合材料成员的强大的健康监测

Akshay Prakash Kalgutkar1, Shirsendu Sikdar2, Sauvik Banerjee1

  • 1Civil Engineering Department, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.

Scientific reports
|April 9, 2025
PubMed
概括

本研究介绍了一种混合框架,用于使用引导波来检测复合结构中几乎看不见的损伤. 它有效地区分了表面磨损和毛线裂,这对于结构健康监测至关重要.

关键词:
导向波的导向波是指导波的导向波.头发线上的裂,发型上的裂.空洞的复合材料成员.压电式传感器 压电式传感器表面磨损可能是表面磨损.

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Unsymmetric Loading of Thin-Walled Members01:23

Unsymmetric Loading of Thin-Walled Members

Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
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Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
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Thin-Walled Hollow Shafts01:15

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
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Unsymmetric Loading of Thin-Walled Members: Problem Solving

The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
84