Development and Comprehensive Investigation of a Lightweight FBG Accelerometer for Small Structure Acceleration Measurements

IF 2.7 3区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Science and Technology Pub Date : 2024-07-02 DOI:10.1088/1361-6501/ad5dea

M. R. Rahim, MD Mofazzal Hossain, Mohd Firdaus Hassan

引用次数: 0

Abstract

Despite their sensitivity potential, diaphragm-type fiber Bragg grating accelerometers with inertia mass are often too complex and large, limiting their suitability for measuring small structures. Designing a suitable accelerometer for small structures, where its weight must be less than one-tenth of the measured structure, is challenging. This paper introduces a compact, simplified, and fabricable non-inertia mass FBG accelerometer (FBGA-SD), featuring a longer FBG tunnel and a through-hole for monitoring. The proposed FBGA-SD is 16 × 16 × 10 mm, weighing 4 grams. Numerical and experimental results show good agreement, though amplitude sensitivity differs by 50%. The experimental sensitivity is 9.64 × 10-2 pm/g, while transient response analysis gives 4.79 × 10-2 pm/g, valid for 10-100 Hz excitation frequencies and up to 10.5 m/s² base acceleration.

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用于小型结构加速度测量的轻型 FBG 加速计的开发与综合研究

带惯性质量的膜片型光纤布拉格光栅加速度计尽管具有灵敏度潜力，但往往过于复杂和庞大，限制了其测量小型结构的适用性。为小型结构设计一个合适的加速度计，其重量必须小于被测结构的十分之一，这具有很大的挑战性。本文介绍了一种紧凑、简化且可制造的非惯性质量 FBG 加速计（FBGA-SD），其特点是具有较长的 FBG 通道和用于监测的通孔。拟议的 FBGA-SD 尺寸为 16 × 16 × 10 毫米，重 4 克。尽管振幅灵敏度相差 50%，但数值和实验结果显示出良好的一致性。实验灵敏度为 9.64 × 10-2 pm/g，而瞬态响应分析结果为 4.79 × 10-2 pm/g，适用于 10-100 Hz 的激励频率和高达 10.5 m/s² 的基本加速度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Measurement Science and Technology 工程技术-工程：综合

CiteScore

4.30

自引率

16.70%

发文量

656

审稿时长

4.9 months

期刊介绍： Measurement Science and Technology publishes articles on new measurement techniques and associated instrumentation. Papers that describe experiments must represent an advance in measurement science or measurement technique rather than the application of established experimental technique. Bearing in mind the multidisciplinary nature of the journal, authors must provide an introduction to their work that makes clear the novelty, significance, broader relevance of their work in a measurement context and relevance to the readership of Measurement Science and Technology. All submitted articles should contain consideration of the uncertainty, precision and/or accuracy of the measurements presented. Subject coverage includes the theory, practice and application of measurement in physics, chemistry, engineering and the environmental and life sciences from inception to commercial exploitation. Publications in the journal should emphasize the novelty of reported methods, characterize them and demonstrate their performance using examples or applications.