Multiaxial high cycle fatigue test system
US6718833B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 28, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jun 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multiaxial high cycle fatigue test system for testing bending, torsion, and tension of a test unit, comprises servo-hydraulic components, including a hydraulic service manifold, two small high frequency actuators along a first axis, and one large main actuator along a second axisThe large main actuator is used to apply a radial centrifugal force, and the two small actuators are used to apply vibratory loading; the two small side actuators being offset independently of each other, to enable the machine to apply both bending loads and torque to the test unit.The test unit is subjected to torsion loading when the traverse actuators move in phase, that is when both actuators move either in or out at the same time. The test unit is subjected to bending loading when the actuators move out-of-phase, that is one actuator moves in when the other moves out or vice-versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.