SustainabilityNews

What is Fatigue?

01-07-2025

What is "Fatigue"?
Why Must Strong Structures Pass This Test?
In engineering, a material being strong doesn’t always mean it’s durable.
What’s more challenging than tensile strength is repeated loading, also known as Fatigue.

What is Fatigue?
Fatigue is the weakening of a material caused by repeated loading and unloading.
For example, steel wires used in prestressed concrete, piles, or bridges may not break from a single force.
But after tens or hundreds of thousands of repeated stresses, the material becomes "fatigued" — and can fail without warning.

Examples of Fatigue-Related Failures:
Bridge cables snapping after just a few years of use
Structural collapse due to continuous vibrations
Damage invisible to the naked eye

Why Perform Fatigue Testing at SIW-Testing Service Center?
1. Internationally Certified Standards
SIW operates the only wire testing lab in Thailand certified for Fatigue Testing by NATA (Australia’s national lab accreditation body).
This guarantees that all equipment and processes meet strict international standards.
2. Real Testing — Beyond Theory
We simulate repeated stress cycles to determine how many times your wire can withstand force before failure.
You’ll receive detailed reports with clear graphs, backed by advanced tools and expert analysis.
3. Supporting Nation-Level Construction
SIW supports major infrastructure projects—expressways, bridges, rail systems—where high-performance wire is critical.
Fatigue testing is a key step before the wire is ever used in the field.

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