m1000 Hz High-Cycle FatigueTest System

MTS has developed a servohydraulic testsystem for accurate and reliable fatiguetesting at 1000 Hz. The system is alreadybeing used by several laboratories fortesting materials used in advanced aero-space applications.High cycle fatigue testing to long lives

requires high-frequency equipment. A109 cycle test would require more thanseven months with a traditional 50 Hzservohydraulic testing machine. Thesame test takes only 11 days with the1,000 Hz high-cycle fatigue test system.

The 1000 Hz high-cycle fatigue testsystem maintains high waveform fidelitywhile running at high frequency. It allowshighly accurate control with a static loadcapacity of ±25 kN (±5.5 kip). Environ-mental chambers and induction heat(available as system options) allow thesystem to be used for determining tem-perature effects during fatigue testing.

System Benefits�Uniaxial system, static capacity ±25 kN (±5.5 kip)*

�Total displacement ±25.4 mm (±1in)

�Able to perform 1 billion cycletest in 11 days

�High mechanical durabilityachieved through Voice CoilServovalve technology

�AdapTrac™ amplitude phasecontrol (APC) softwareincreases the effective fre-quency range for 1,000 Hz sustained testing

The MTS 1000 Hz High-Cycle Fatigue Test System

* Dynamic performance depen-dent upon specimen material,configuration, and grip mass.

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MTS Systems Corporation14000 Technology DriveEden Prairie, MN 55344-2290952-937-4555, Fax 952-937-4095E-mail: info@mts.comwww.mts.com

ISO 9001:2000 CERTIFIED QMS

Specifications subject to change without noticeMTS and TestWare are registered trademarks, andTestStar is a trademark of MTS Systems Corporation.RTM No. 211177.©2001 MTS Systems Corporation 500008-34 HighCycle-03 Printed in U.S.A. 9/01

System components�MTS 318.25S load unitequipped with a high-perfor-mance, high-flow voice coilservovalve

�Low-mass grips and fixtures�TestStar™ IIs digital controller�MultipurposeTestWare® withAdapTrac Software

�505.11 hydraulic power unit

Options for environ-mental testing�Environmental chambers�High-temperature furnace�Induction heating systems

The 1000 Hz System Servovalve Assembly

Cross section of the MTS Model 257 Voice Coil Servovalvedesigned to perform high-frequency, high-performance testing.

AdapTrac Software a standard feature of MTS 1000Hz High-Cycle Fatigue Test System software,ensures optimum accuracy, speed, and versatility inhigh-cycle testing.

The MTS Model 609 Alignment Fixture and MTSlow-mass grips ensure optimum system response.

For More InformationContact your local MTS sales engineerfor more information on the MTS 1000Hz high-cycle fatigue test system.

Initial Waveform

DesiredWaveform

Phase Correction

Amplitude Correction

PilotReturn

Return

PressureOutput Pressurefrom Pilot Stage

PilotSpool

Main StageSpool

LVDT(connectornot shown)

To Actuator

Main Stage(second stage)

Preload Adjustment(factory adjusted)

Field CoilConnector

Voice CoilConnector

Voice Coil

LVTConnector

LVT

LVTLocknut

PilotPressure

Pilot Stage(first stage)