Biaxial testing system for characterization of mechanical and rupture properties of small samples

Corti, A; Shameen, Tariq; Sharma, Shivang; Paolis, Annalisa De; Cardoso, Luís

doi:10.1016/j.ohx.2022.e00333

Cited by 12 publications

(7 citation statements)

References 25 publications

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“…The low-cost biaxial tester is custom-designed and built without the support of a manufacturing company specialized in automation. Easily available components were chosen, and the overall cost is very low (in the range of € 2.5 K at the 2022 prices), if compared with commercial machines (€ 50 K -€ 100 K + ) or with other self-built machines, if the cost of a recent comparable example [24] is six times higher. The system was tested to verify error and repeatability, and the machine demonstrated high-performance standards.…”

Section: Discussionmentioning

confidence: 99%

“…The pitch of the ball screw is 5 mm for a complete turn; therefore, the expected motion for 0.1125 degrees is 0,00156 mm. We decided to use a digital dial indicator 24 with 0.001 mm resolution to measure the accuracy and repeatability of the motion of the carriages under the control of the software. Such test would also verify the statements of the manufacturer of the parts.…”

Section: Displacement Of the Carriagesmentioning

confidence: 99%

“…Pretensioning time depends on the material's stiffness and on the accuracy of the clamping procedure 24. Neoteck, model NTKTL287-FBA.…”

mentioning

confidence: 99%

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An open-source biaxial tensile tester with automated pre-tensioning for mechanical studies of canvas paintings

Idelson¹,

López²,

Groves³

2023

HardwareX

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Section: Discussionmentioning

confidence: 99%

Section: Displacement Of the Carriagesmentioning

confidence: 99%

See 1 more Smart Citation

An open-source biaxial tensile tester with automated pre-tensioning for mechanical studies of canvas paintings

Idelson¹,

López²,

Groves³

2023

HardwareX

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“…Several biaxial testing devices were developed previously [7,12,31,32]. The major limitations of previously developed biaxial testers were portability, clamping of soft tissues, size and cost of the device.…”

Section: Introductionmentioning

confidence: 99%

Development of an ultra-low-cost planar biaxial tester for soft tissue characterization

Gupta

Chanda

2023

Biomed. Phys. Eng. Express

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Nowadays, the research in the arena of biomedical engineering or specifically soft tissue characterization is rapidly increasing. Due to the complex properties of soft tissues such as, anisotropy and viscoelasticity, it is difficult to predict the deformation behaviour. Hence, soft tissue characterization is essential to analyze these metrics. Soft tissue characterization, specifically, can be done by implementing a planar biaxial tester. Currently, available biaxial testers are mostly developed with respect to other mechanical components such as metals, and not for the soft tissues. Also, these devices are very costly, which makes it difficult for the low and middle income countries to perform this characterization. To solve this problem, in this work, an extremely low-cost biaxial tester was designed and developed. The design of the biaxial tester was simple and modular to allow device modifications according to the applications. The device has a force capability of less than 0.4kN and a variable speed of 18mm/min to 300mm/min. The biaxial tester was validated using a standard test material with mechanical testing machine and was further tested on several wound geometries including circular, square, diamond shaped, L-Plasty, and elliptical. The developed fully automated device exhibited high accuracy with real-time monitoring. Furthermore, test results on the wounds showed the device’s capability to differentiate amongst the considered wound geometries. This device can be helpful to medical students and doctors in understanding the mechanical behaviour of soft tissues during injury induced damage, disease, wounds healing and also for plethora of applications such as expansion testing of skin grafts.

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“…4. КМ «Прометей» разработали серию установок, предназначенных для испытания в условиях двухосного изгиба сварных соединений из листового металла толщиной 20-100 мм с пределом текучести до 15 МПа [17].…”

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Methods and Equipment for Experimental Evaluation of the Performance of Shell and Hull Structures

Lyudmirsky

Assaulenko

Kramskoi³

2022

Vestnik Donskogo gosudarstvennogo tehničeskogo universiteta

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Introduction. Pressure-operated thick-walled hull structures are the most common type of high-duty welded structures. When these structures are loaded with internal pressure, a complex biaxial stress field arises in them, which is summed up with the fields of residual welding stresses. Therefore, when selecting a technology for manufacturing critical welded structures, the results obtained during conventional uniaxial tests of samples are insufficient. The variety of factors affecting the performance of structures, and the difficulties of separate assessment of their influence, caused the need to maximize the approximation of experimental conditions to the real working conditions of the structure.Materials and Methods. Testing of full-scale structures has a number of advantages, but they are extremely expensive, and, as a rule, only one, the weakest link, is identified, the bearing capacity of the other structural elements remains unclear. For testing, UDI radiometric installations designed for different sample sizes were used. The presented installations allow testing samples of various shapes, types of welded joints (butt, T-bar), changing the position of welded parts.Results. Without rejecting the results obtained during the testing of full-scale structures in the works of the Bauman Moscow State Technical University, DSTU, NRC «Kurchatov Institute» – CRISM «Prometey», and the authors proposed to conduct the basic scope of the research on individual structural elements that would reflect the characteristic features of loading, manufacturing technology, and operating conditions. The design of the «fitting-sheet» connections was applied, which made it possible to increase the indicators of the failure initiation and propagation to the level of the base metal.Discussion and Conclusions. Schemes of structures for obtaining a biaxial tension or bending field in samples were presented. Samples tested according to the proposed schemes allowed us to draw conclusions about the performance of welded joints under conditions close to the actual operation of the structures under study. The proposed test scheme is used by research laboratories in our country and around the world.

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Biaxial testing system for characterization of mechanical and rupture properties of small samples

Cited by 12 publications

References 25 publications

An open-source biaxial tensile tester with automated pre-tensioning for mechanical studies of canvas paintings

An open-source biaxial tensile tester with automated pre-tensioning for mechanical studies of canvas paintings

Development of an ultra-low-cost planar biaxial tester for soft tissue characterization

Methods and Equipment for Experimental Evaluation of the Performance of Shell and Hull Structures

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