LFV Servohydraulic Dynamic & Fatigue Testing System (up to 630 kN)

Dynamic & Fatigue Testing

LFV Servohydraulic Dynamic & Fatigue Testing System (up to 630 kN)

High-performance servohydraulic dynamic fatigue testing machine (100–630 kN) for LCF, HCF, fracture mechanics, TMF, and component durability testing.

Part No: LFV-630-HH
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ISO 12106 ASTM E606 / E606M ASTM E399 / ASTM E1820 ASTM E466 ISO 7500-1

Overview

The TestingGmbH LFV series is a modular, heavy-duty servohydraulic dynamic testing system configured with the actuator integrated into the rigid lower base. Designed for demanding cyclic and monotonic fatigue applications, it features equal-area double-acting hydrostatic bearings for friction-free high-frequency operation and extended seal life. Widely utilized in aerospace, automotive, power generation, and materials research for Low Cycle Fatigue (LCF), High Cycle Fatigue (HCF), Fracture Toughness (K1C/J1C), and Thermo-Mechanical Fatigue (TMF).

Applications

High-cycle fatigue (HCF) and low-cycle fatigue (LCF) testing
Fracture mechanics, K1C / J1C, and crack propagation studies
Thermo-mechanical fatigue (TMF) at elevated temperatures
Dynamic component durability and elastomer testing
High strain rate tensile and compression testing
Crack growth and threshold measurement under cyclic loading

Key Features

Actuator in lower base with hydrostatic 4-pocket bearing for zero side-load friction
Hydraulic passive crosshead clamping (Version HH) without ongoing hydraulic pressure
High-frequency servovalves with close-coupled accumulators
Digital closed-loop control for force, displacement, and specimen strain up to 14 kHz
High-stiffness columns with precision alignment fixture
Comprehensive Dion7 dynamic software modules for fatigue and fracture testing

Technical Specifications

Specification Value
Dynamic Force Capacities 100 kN / 250 kN / 400 kN / 630 kN
Actuator Stroke 100 mm / 150 mm / 250 mm
Frequency Range Static up to 100 Hz (depending on amplitude and HPU)
Column Clearance (Width) 600 mm to 750 mm
Measuring Accuracy Class 0.5 per ISO 7500-1 / ASTM E4
Control Frequency 10 kHz digital closed loop
Hydraulic Pressure 210 bar / 280 bar

Applicable Standards

ISO 12106 ASTM E606 / E606M ASTM E399 / ASTM E1820 ASTM E466 ISO 7500-1

Frequently Asked Questions

Placing the actuator in the lower base lowers the center of gravity, improves frame natural frequency, prevents oil leaks from contaminating test specimens, and leaves the upper test space clear for furnaces and extensometers.

Frequencies typically range from 0.01 Hz up to 50–100 Hz depending on specimen stiffness, test amplitude, and hydraulic pump flow rate.

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