A tensile machine with a novel optical load cell for soft biological tissues application

被引：2

作者：

Faturechi, Rahim ^{[1
]}

Hashemi, Ata ^{[1
]}

Abolfathi, Nabiollah ^{[1
]}

机构：

[1] Biomedical Engineering Department, Amirkabir University of Technology, Tehran

来源：

Journal of Medical Engineering and Technology | 2014年 / 38卷 / 08期

基金：

美国国家科学基金会;

关键词：

Beam theory; Image processing; Load cell; Soft tissue testing; Uniaxial tension test;

D O I：

10.3109/03091902.2014.968677

中图分类号：

学科分类号：

摘要：

The uniaxial tensile testing machine is the most common device used to measure the mechanical properties of industrial and biological materials. The need for a low-cost uniaxial tension testing device for small research centers has always been the subject of research. To address this need, a novel uniaxial tensile testing machine was designed and fabricated to measure the mechanical properties of soft biological tissues. The device is equipped with a new low-cost load cell which works based on the linear displacement/force relationship of beams. The deflection of the beam load cell is measured optically by a digital microscope with an accuracy of 1 μm. The stiffness of the designed load cell was experimentally and theoretically determined at 100 N mm-1. The stiffness of the load cell can be easily adjusted according to the tissue's strength. The force-time behaviour of soft tissue specimens was obtained by an in-house image processing program. To demonstrate the efficiency of the fabricated device, the mechanical properties of amnion tissue was measured and compared with available data. The obtained results indicate a strong agreement with that of previous studies. © 2014 Informa UK Ltd. All rights reserved.

引用

页码：411 / 415

页数：4

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