WAW-G1000D microcomputer controlled electro-hydraulic servo steel strand testing machine

The design, manufacture and inspection of this testing machine are based on the following relevant clauses of the standard:

1), GB / T2611-2007 "General Technical Requirements for Testing Machines"

2), JJF1103-2003 "Evaluation of Computer Data Acquisition System of Universal Testing Machine"

3), JJG139-1999 "Verification Regulations of Tensile Force, Pressure and Universal Testing Machine"

4), GB / T16826-2008 "Electro-hydraulic servo universal testing machine"

5), GB / T228-2008 "Metal material room temperature tensile test method"

6), GB / T7314-2005 "Metal material room temperature compression test method"

7), GB / T5224-2003 "Steel Strand for Prestressed Concrete"

8), SL 352-2006 "Hydraulic Concrete Test Regulations"

9), GB / T 8358-2006 "Tension Test Method for Broken Wire Rope"

10), GB12347-1996 "steel wire rope for aircraft control."

11), GB-T17048-1997 "Duralumin Wire for Overhead Stranded Wire"

12), GBT20118-2006 "General Purpose Wire Rope"

13), GB / T 3195-2008 "Aluminum and aluminum alloy drawn round wire"

14), GB / T 3098.1-2000 "mechanical properties of fasteners bolts, screws and studs"

15), GB / T232-1999 "Metal material bending test method"

16), GB / T 1447-2005 "Test method for tensile properties of fiber reinforced plastics"

17), GB / T 1448-2005 "Test method for compression performance of glass fiber reinforced plastics"

18), GB / T 1449-2005 "Test method for bending properties of fiber reinforced plastics"

1. Main functions and features:

1. The testing machine uses a microcomputer to control a high-precision electro-hydraulic servo valve and drives a precision hydraulic cylinder to realize automatic control of multiple modes such as constant rate test force, constant rate displacement, and constant rate deformation to complete the drawing of steel strand samples The tensile test meets the requirements of GB / T5224-2003 "Steel Strand for Prestressed Concrete". Add accessories to complete the tensile, compression, bending, and shear tests of various other materials,

2. The main body of the testing machine adopts a hydraulic cylinder: the hydraulic cylinder is at the lower part of the testing machine, and the piston is pushed up under the action of hydraulic pressure, which can realize the compression, bending and shear test of the sample; The structure is convenient for clamping samples and has good stability. The structure design is reasonable, concise, good stability, reliable, easy to maintain, hydraulic servo loading system, to ensure the system is highly precise, efficient, low noise, fast response, to achieve automatic control of the test loading, commutation;

Microcomputer control and processing system:

a: Servo control system: accurately complete the setting of test parameters during the test process, automatic control of the test process, data collection, processing, analysis, storage and display (test data includes: upper and lower yield points, tensile strength, breaking strength, elasticity Modulus, elongation at each point, non-proportional elongation, etc.). It realizes the closed-loop control of test force, sample deformation, piston displacement and test process, as well as the control functions of constant velocity stress, constant velocity strain, constant velocity test force, constant velocity displacement, test force retention and displacement retention.

b: On-screen display function of test force, peak value, sample deformation, piston displacement, test curve, full keyboard input operation and control mode intelligent setting expert system, which realizes arbitrary setting of control mode and smooth switching between various control methods , So that the system has maximum flexibility. Stable loading and unloading.

c: According to the requirements of GB / T5224-2003 "Steel Strand for Prestressed Concrete", the test data is automatically collected and processed. (There are multiple test methods and standards in the data board, which can complete the experiment of multiple materials.) The test process can simulate reproduction and re-analysis of test data, test curve enlargement, comparison and traversal. The test curve can choose the coordinate axis arbitrarily, and can zoom in and out freely;