MTS Wind Turbine Blade Fatigue Test Systems

MTS Wind Turbine Blade Fatigue Test Solutions

Apply single- and dual-axis cyclic loading to full-scale wind turbine blades and sub-components at resonant frequencies to meet fatigue-testing demands of International Electrotechnical Commission (IEC) Technical Specification 61400-23. The MTS offering includes two complementary solutions: the fast, powerful Ground-coupled Resonance Excitation (GREX) System, and the flexible, efficient Inertial Resonance Excitation (IREX) System.

Applications

  • Blade Fatigue Testing
    • Single-axis Cyclic Loading
    • Dual-axis Cyclic Loading

Test Specimens

  • Full-scale Wind Turbine Blades
  • Wind Turbine Blade Sub-components

Key Product Features

Integrated / Synchronized

State-of-the-art controls, data acquisition and application software comprise an efficient, high-fidelity test and simulation environment.

Versatile

Configurable for flap-wise, edge-wise and dual-axis resonant blade fatigue testing

Efficient Operation

Features automated control of test end-levels and test frequency

Durable / Reliable

Integrates fatigue-rated MTS test actuators, swivels and mounting hardware

Model Comparison

Ground-coupled Resonance Excitation System (GREX)

Inertial Resonance Excitation System (IREX)

Technical Overview

GREX

Diagram

  1. Reaction Block
  2. Hydraulic Service Manifold
  3. Ground Resonance Excitation (GREX) System
  4. Wind Turbine Blade Specimen
  5. Loading Fixture

GREX 50 Standard Specifications

Force capacity

50 kN

Actuator Length

5.67 m at mid-stroke

Stroke

1.75 m

Velocity

2.5 m/sec (@25kN force)

Servovalve

450 lpm

 

 

Special Options

 

Extension Tube

Up to 3m extension

Hydraulic System

260 lpm (minimum recommended)

Accumulation required

75 L Pressure / 37.75 L Return (recommended)

 

GREX 100 Standard Specifications

Force capacity

100 kN

Actuator Length

5.67 m at mid-stroke

Stroke

1.75 m

Velocity

2.5 m/sec (@25kN force)

Servovalve

940 lpm

 

 

Special Options

 

Extension Tube

Up to 3m extension

Hydraulic System

520 lpm (minimum recommended)

Accumulation required

150 L Pressure / 75 L Return (recommended)

 

IREX

Diagram

  1. Inertial Resonance Excitation (IREX) System
  2. Loading Fixture
  3. Hydraulic Hose Stands
  4. Hydraulic Service Manifold
  5. Reaction Block

 

IREX Standard Specifications

Force capacity

50 kN

Moving mass range

160-1010 kg

Moving mass increment

50 kg

Stationary mass (typ)

170-230 kg

Total mass (typ)

330-390 kg

Dimensions

1.42x.53x.48 m

Stroke

0.15 m

Velocity

1.37 m/sec

Servovalve

120 lpm

Hose sizes

-16P, -16R, -8D JIC

 

 

Special Options

 

Tilt angle range

+/- 10 deg

Tilt angle increment

2 deg

Accumulation required

2 L (normal)


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