What is it about?

Structures, such as buildings, bridges, etc., are not built in one go. They are made in parts (e.g. beams, columns, etc.) that are connected with the help of structural joints. The term structural joint is generally associated with the contact area between the parts. The health of structural joints is critical to the overall health/failure assessment of a structure since their failure would result in the collapse of the connecting structural members as well. Our paper presents an algorithm that focuses on determining the health of such structural joints, which would, in turn, help prevent catastrophic failure.

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Why is it important?

The study of structural joint failure is necessary since its untimely failure may lead to the collapse of the connecting structural members. However, most of the present literature focuses on structural member failure whereas our paper presents a solution for the detection of structural joint damage. The algorithm only requires strain sensor data for joint damage detection. The other important feature of the algorithm, unlike most other research works, is that it does not require any information about the external force acting on the structure. Hence the proposed method also works efficiently under extreme loading conditions, such as earthquakes, etc. where the possibility of such joint damage failure is high.

Perspectives

I hope this article spreads awareness about the importance of structural health monitoring since a catastrophic structural failure, that results in loss of lives and the economy, can be prevented if detected at an early stage.

Neha Aswal
Indian Institute of Technology Mandi

Read the Original

This page is a summary of: Strain‐based joint damage estimation approach robust to unknown non‐stationary input force, Structural Control and Health Monitoring, May 2022, Wiley, DOI: 10.1002/stc.2999.
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