#fatigue

A notched steel test coupon held in the hardened wedge grips of a universal testing machine with a clip-on extensometer across its gauge length and a fine crack just opening at the notch root

Why Materials Fail: Fracture, Flaws and the Inspection Interval

Materials do not break at the strength their bonds imply. They break from flaws they already contain, which is why modern practice measures toughness and schedules inspections instead of trusting a single strength number.

By Brecht Corbeel · August 9, 2026 · 18 min read

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