Computer-Controlled Electronic Tension-Compression Fatigue Testing Machine

➤ Applicable Standards:

GB/T 2611-2007 General Technical Requirements for Testing Machines

GB/T 16825.1-2008 Verification of Static Uniaxial Testing Machines - Part 1: Tension/Compression Testing Machines – Verification and Calibration of the Force-Measuring System

JB 9397-2002 Technical Requirements for Tension-Compression Fatigue Testing Machines

GB/T 3075-2008 Metallic Materials – Fatigue Testing – Axial Force-Controlled Method

GB/T 15248-2008 Metallic Materials – Axial Strain-Controlled Low-Cycle Fatigue Testing Method

GB/T 16947-2009 Fatigue Testing Specification for Helical Springs

ISO 7500-1:2018

ISO 1099:2017 (Metallic Materials – Fatigue Testing – Axial Force-Controlled Method)

ISO 12106:2017 (Metallic Materials – Fatigue Testing – Axial Strain-Controlled Method)

ISO 11891:2021 (Helical Spring Fatigue Testing)

EN 15800 (Related to Spring Fatigue Testing)

ASTM E4

ASTM E467 (Dynamic Force Calibration Method) or ASTM E466 (Axial Fatigue Testing Requirements)

ASTM E466/E466M (Constant Amplitude Axial Fatigue Testing)

ASTM E606/E606M (Strain-Controlled Fatigue Testing)

➤ Equipment Composition:

Floor-Standing Movable Gantry Loading Platform:

Double-column gantry design with a cross-type upper beam and manual locking. Four shock-absorbing foot cups are mounted at the bottom. Large-diameter columns ensure high structural strength.

Servo Actuator and Drive Device (Single Channel):

Maximum stroke: ±50mm

Equipped with a high-precision digital displacement sensor.

Buffer zones are designed at amplitude limits to prevent damage due to uncontrolled movement.

Anti-clearance mechanism and automatic force centering reduce lateral force and impact during high-frequency tension tests, improving waveform accuracy.

Data Acquisition and Control System:

Consists of a fully digital dynamic/static servo controller, computer, software, and accessories.

High-Precision Load Sensor:

High accuracy, 120% overload capacity.

Mounted on the front end of the actuator piston with a self-locking nut.

Factory calibrated.

Sample Installation Capacity:

For springs with max test force 5000–10000N: 2 samples per test.

For springs ≤5000N: 4 samples per test.

For springs ≤200N: 10 samples per test.

➤ Equipment Functions:

Fatigue Performance Testing:

Mode 1: Constant deformation fatigue test – includes Force-Time curve, Deformation Amplitude-Cycle curve, Sine waveform.

Mode 2: Constant force fatigue test – includes Deformation-Time curve, Force Amplitude-Cycle curve, Sine waveform.

Mode 3: Programmed control – Custom test steps (e.g., T-wave testing).

Frequency Support: Software supports up to 20Hz. Actual frequency depends on sample deformation; larger deformations reduce frequency.

Sampling Frequency: Real-time data acquisition up to 20kHz.

Pass/Fail Criteria: Based on loading cycles, deformation, or force decay.

Automatic Stop: Test stops when sample breaks or force decays to set value. Tests can resume on subsequent days.

Static Performance Testing:

Real-time display of force, peak values, and test status

Automatic synchronization of displacement and force

Auto test execution upon parameter input

Auto return to initial position after test

Auto calculation of tensile/compressive strength, elongation, etc.

Auto data and curve storage

Easy multi-test result lookup

Test result printing

Menu-based, user-friendly operation

Multi-functional – tensile, compression, bending, tearing, peeling with proper fixtures

Dynamic curves during test

Auto return on specimen failure

Condition module storage for batch testing

Programmable speed control

Fully computer-controlled process, display, measurement, and analysis

Batch testing with one-time parameter setting

Curve analysis and data point inspection

Curve selection: Force–Displacement, Force–Time, Displacement–Time

Customizable and printable test reports

➤ Main Technical Specifications:

➤ Main Configuration List:

➤ Data Acquisition & Control System:

System Composition:

Includes fully digital servo controller, computer, software, and accessories.

Key Components:

Upgradeable controller host station

Signal conditioning unit (2 sensors: force & displacement, expandable)

Signal generator unit

HS-GPIB communication card (PC interface)

Technical Specs:

Full digital PIDF control with any signal

Frequency Range: 0.1–20Hz

Control Waveform: Sine wave

Control Modes: Force/Displacement closed-loop control with seamless switching

Functions: Sensor calibration, zeroing, high-speed GPIB data acquisition (up to 8M/s)

Main Features:

Various application software packages available, quick learning curve

Calibration wizard for auto/manual calibration

Advanced dynamic control technologies like adaptive control, automatic waveform tuning, amplitude control

High-resolution sampling & signal conditioning ensure data quality

Modular, upgradeable controller for future expansion

Software simplifies test creation, auto step generation, compensation techniques for complex tests

Control modes include seamless switching, zero-drift startup, PID settings save/restore, automatic data collection, and specimen protection

➤ Software System:

Supports both Chinese and English interfaces

Includes test definition, execution, analysis, and report generation

➤ Sample Test Report Template (Reference):

➤ Environmental Requirements:

Installed on a stable foundation or workbench

Free of vibration, corrosive media, and strong electromagnetic interference

Power supply voltage fluctuation ≤ ±10% of rated voltage

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