BTT series Biaxial Tensile Testing Machine of Membrane Structure

Model: BTT Series
Description: BTT series biaxial tensile testing machine is used for testing modulus of elasticity, stress strength and other mechanical properties of membrane material. Tensile load applied on specimen is driven by motor and load cell is used to measuring the loading force, while displacement sensor is to measure the position of specimen, for which load Vs. displacement curve can be achieved at the state of uni-axial and biaxial condition, and software can calculate the modulus of elasticity, stress strength and other mechanical properties of membrane material accordingly.

Applied Standard

  • Load meets or exceeds the following standards: ASTM E4, ISO7500-1, EN 10002-2, BS1610, DIN 51221.

  • Strain measurement meets or exceeds the following standards: ASTM E83, ISO 9513, BS 3846, EN 10002-4.

  • Safety: This machine shall conform to all relevant European CE Health and Safety Directives EN 50081-1, 580081-1, 73/23/EEC, EN 61010-1.


Load Frame



Specimen is ‘X’ style, which is fixed in the center of the testing machine. The four boundaries of the specimen are fixed by the grip. The displacement sensor is fixed in the center of specimen. As equipment that applying load, the servo motor is fixed at the bottom of leading screw, and at the same time, the value of load is recorded by sensor. There is a displacement sensor at the center of specimen which can transfer the value of displacement. Using these data, the software can protract load-displacement curve. As the two servo motor are located in two directions (warp and weft) and can work at the same time, this biaxial tensile machine can do biaxial test and to-and-pro test.  

Superior Load Frame Design

The biaxial tensile testing machine consists of mechanical system and control system: mechanical system includes load frame, membrane specimen fixtures, servo motors(Japan), load sensors, displacement sensor and other components, while control system with the computer and software;


Mechanical part structure


 


Front view                                                                        Upwards view


1. leading screw, 2-fixing unit for leading screw, 3-clip for membrane, 4-fixing plate, 5-displacement sensor, 6-tensile load sensor, 7-installation for load, 8-main frame


Testing Curves for reference

  

 

 Testing curves

(a) Load-displacement curve of single-axis tensile process, (b) Load-displacement curve of single-axis loading-unloading process, (c) Load-displacement curve of biaxial tensile process


Specification

  • Max. tensile load measuring range for longitude & latitude): up to 50kN 

  • Testing speed: 0.5-100mm/min

  • Max. stroke: 300mm 

  • Ration of test load: 1:1, 1:2, 1:3 and 1:4;

  • Load accuracy: ±1%

  • Data output: the testing curves can be output to computer (including single axial testing & biaxial testing curves);

  • Power supply: 380V /220V drive power.

Video

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