Patent
In-situ testing device for micro-mechanical properties of materials under tension-shear combined loading mode
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TLDR
In this article, the authors proposed an in-situ testing device for micro-mechanical properties of materials under a tension-shear combined loading mode, which belongs to the test field of mechanical properties.Abstract:
The invention relates to an in-situ testing device for micro-mechanical properties of materials under a tension-shear combined loading mode, and belongs to the in-situ test field of mechanical properties. A tension module and a shear module are composed of a motor power assembly, a transmission and execution assembly, a clamping support assembly, a signal detection and control assembly respectively. The shear module also comprises a piezoelectric driving assembly capable of applying high-frequency shear fatigue loading. A coreless rotor direct-current motor is connected with a planetary gear reducer and is connected with a precision bi-directional ball screw through a worm and gear transmission component; and square nuts connected with the ball screw nuts are supported and guided through guide rails at the two sides. Two loadings are respectively collect force and displacement signals by a precision force sensor and a linear motor power assembly potentiometer. The in-situ testing device is smart in size, compact in structure and high in test precision, can realize the tests of tension and shear loadings at different strain rates and stress ratios, and can be compatible with loading platforms of microscopic imaging equipment such as metallographic microscopes and the like.read more
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References
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Hydraulic mechanical property measurement device for composite load loading mode material
Hongwei Zhao,Zhichao Ma,Fan Zunqiang,Qinchao Li,Kaiting Wang,Xiaoli Hu,Hu Huang,Shunguang Wan +7 more
TL;DR: In this article, a hydraulic mechanical property measurement device provided by the utility model provides a research means for the mechanical property of the material in combination forms of tensile stress and shear stress with different angles.
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Method of testing metal sheets for biaxial tension using a hydrostatic liquid pressure at various temperatures, and apparatus for carrying it out
Zolotov Michail Alekseevic,Skudnov Venjamin Arkadevic,Olman Genja Venjaminovic,Chizenkov Igor Gennadevic +3 more
TL;DR: The method of testing metal sheets for a biaxial tension is to press a dish-shaped diaphragm (5) of an apparatus for carrying out the method against a cavity block (3), to apply an increasing force to it by means of a ram (7) and to plot a "force/strain of diaphm" diagram, then to press the diaphrasm against a metal specimen (20), to fill the cavity produced with a working medium (21) and again to apply a increasing force on the diagramm (3)
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