Mechanical characterization of millimetric agarose spheres using a resonant technique

IF 1.1 4区工程技术 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Archives of Mechanics Pub Date : 2020-06-30 DOI:10.24423/AOM.3499

J. Yescas, P. Mandal, J. Sinha, R. Snook, J. Hawkes, P. M. Garibaldi, R. Carrera-Espinoza

引用次数: 0

Abstract

This paper presents a methodology for the mechanical characterization of agarose millimetric spheres using resonant principles. Detection of the modes of vibration was conducted using a low-cost experimental setup based on an electret microphone adapted with a thin latex elastic membrane for the sensing stage and a piezoelectric actuator driven by a conventional transformer for the excitation stage. The identification of vibration modes is supported through an ANSYS Finite Element model of the experimental setup. Experimental and numerical results demonstrate that two modes of vibration, known as Quadrupole and Octupole, appear in the amplitude spectrum and can be used to obtain stiffness values for the samples. Following this approach, Young’s modulus of 209 ± 19.80, 338 ± 35.30 and 646 ± 109 kPa for 2%, 3% and 4% agarose millimetric spheres were calculated.

查看原文本刊更多论文

用共振技术表征毫米琼脂糖球的力学特性

本文提出了一种利用共振原理对琼脂糖毫米球进行力学表征的方法。利用一种低成本的实验装置进行了振动模态检测，该实验装置基于驻极体麦克风，其传感级采用薄乳胶弹性膜，激励级采用传统变压器驱动的压电驱动器。通过ANSYS有限元模型对实验装置的振动模态进行识别。实验和数值结果表明，在振幅谱中出现了四极和八极两种振动模式，可以用来获得样品的刚度值。采用该方法计算了2%、3%和4%琼脂糖微球的杨氏模量分别为209±19.80、338±35.30和646±109 kPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Archives of Mechanics 工程技术-材料科学：表征与测试

CiteScore

1.40

自引率

12.50%

发文量

审稿时长

>12 weeks

期刊介绍： Archives of Mechanics provides a forum for original research on mechanics of solids, fluids and discrete systems, including the development of mathematical methods for solving mechanical problems. The journal encompasses all aspects of the field, with the emphasis placed on: -mechanics of materials: elasticity, plasticity, time-dependent phenomena, phase transformation, damage, fracture; physical and experimental foundations, micromechanics, thermodynamics, instabilities; -methods and problems in continuum mechanics: general theory and novel applications, thermomechanics, structural analysis, porous media, contact problems; -dynamics of material systems; -fluid flows and interactions with solids. Papers published in the Archives should contain original contributions dealing with theoretical, experimental, or numerical aspects of mechanical problems listed above. The journal publishes also current announcements and information about important scientific events of possible interest to its readers, like conferences, congresses, symposia, work-shops, courses, etc. Occasionally, special issues of the journal may be devoted to publication of all or selected papers presented at international conferences or other scientific meetings. However, all papers intended for such an issue are subjected to the usual reviewing and acceptance procedure.