Function

PBFT-BP30 Bone plate bending fatigue tester

It can also conduct experimental testing and research on mechanical fatigue properties of other orthopedic materials.

Standards

1. YY/T0342- Determination of bending strength and stiffness of bone plates for surgical implants;

2. JB/T 9397 tensile fatigue tester technical conditions;

3. JJG 139 tensile, pressure and universal testing machine;

4. YY0017- bone joint implant metal bone plate;

5. YY0018-2008 bone joint implant metal bone screw;

6. GB/T232- "Bending test Method for Metal materials";

7. YY/T1503-2016 Test Method for bending fatigue Performance of Metal bone plates for Surgical Implants

Equipment description

1. Function description

The measurement and control system is composed of dynamic test host, dynamic fatigue loading component, specimen tooling, and measurement and control system. With the T-slot of the workbench, it can meet the installation and fixing of different samples. With special dynamic testing software for medical fatigue, it can complete the test requirements of different test standards.

2. Composition and structure of the test bench

(1) Test bench composition: test host, servo actuator, fixture and accessories, test equipment, beam lifting mechanism, electrical control cabinet, measurement and control software and its control system, computer, etc.

(2) Layout of the test bench: the main machine is a two-column structure, and the middle beam has a lifting mechanism, which can adjust the height of the beam electrically; The actuator is installed in the middle of the cross beam, and the sample is connected by an auxiliary device for testing.

3. Detailed description of the test bench

(1) Mechanical structure of the test bench: the upper surface of the bench is distributed with T-shaped grooves, which is convenient to fix all kinds of fixture; The center of the table is equipped with a pin hole type connector, which can be connected to the stretching fixture or the bending fixture.

(2) Loading mechanism: The loading mechanism is loaded by a high-precision actuator, and the front end is connected to an imported force value sensor, with high control accuracy and test data

Accurate.

(3) Fixture mechanism: Make the corresponding fixture according to the standard and install it on the pin hole type connector or T-slot, and test according to the standard amplitude and frequency characteristics.

(4) The lifting mechanism of the middle beam is composed of servo motor, synchronous belt, ball screw, belt wheel and locking device.

(5) When the beam height needs to be adjusted, first loosen the locking device, and then slowly adjust the beam height, after reaching the appropriate test height, fix the middle beam through the locking device.

4, the realization of the test function the medical bone plate and other samples are installed on the test bench tooling, adjust the position of the beam, and connect the tooling fixture. Start Start button, actuator

Load according to the sine wave or user requirements of the waveform, the loading frequency is adjustable, the amplitude is adjustable, the control mode can be full digital closed-loop control, can be force control or displacement control. Set a number of trials, say 1 million; During the test, the signal signal of the sensor can be collected synchronously according to the set conditions and stored synchronously to the computer hard disk.

Fatigue loading control software

1. The product uses powerful PCBP-system full digital closed-loop servo control system. A closed-loop measurement control operating system is composed of load sensor, displacement sensor, servo actuator, digital closed-loop control software and computer. Therefore, various test procedures can be set and selected, the test process can be controlled automatically and accurately, and the test parameters of each stage can be measured automatically, ensuring the high precision of the test.

2. The special test software is developed under the windows platform, to ensure that the test operation is simple and universal, the test data processing, storage, transmission is easy and convenient, the test process curve is displayed on the display in real time.

3. The software optional waveform is sine wave, half sine wave, triangle wave, square wave, oblique wave, combined wave test. At the end of the test, the software will save some important data, such as test load, frequency, number of cycles and test time. Programmable control test.

Technical parameters

Configuration list