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Fatigue Testing of Materials
MERL offers fatigue evaluation of materials, structures and components.
Capabilities include:
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Materials testing to define damage models for service life
prediction.
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Product, component or structural tests for validation, fitness for purpose, life assessment.
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Advanced servo-hydraulics:
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MTS single axis and multi axis
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Linear (5 – 250 kN) and torsional
(500Nm) actuators
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Periodic or time history (RPC) loading
- Spectral or road load data
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Environmental conditioning
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Fatigue characteristics for rubber |
Fatigue life of engineering component |
Examples of material fatigue tests include:
Rubbers (elastomers)
- Pure shear tests (crack growth)
- Simple extension (crack growth, threshold definition)
- Uni-axial tension (S-N data for crack initiation)
- High frequency dynamic effects
- Equi-biaxial tests crack initiation, S-N data)
Composites
- Interlaminar fracture testing utilising all specimen types e.g. DCB,
4ENF, MMB
- High cycle fatigue testing using multi-station approach
- Tensile/compression and flexural fatigue
Adhesive systems
- Lap shear (double and single)
- Reinforced Double Cantilever Beam (RDCB)
- Mixed mode tests using Flexural Peel (FPS)
- ‘Structural’ tests such as ‘top-hat’, H-structures (e.g. automotive steel
monocoque), T-structures (e.g. automotive spaceframe)
Thermoplastics
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