IndisputableMonolith.Materials.FatigueFractureMechanicsFromJCost
The module certifies fatigue and fracture mechanics as consequences of the J-cost functional equation in materials. Researchers deriving failure criteria from Recognition Science would cite it for the materials domain slot. It applies the reusable six-clause J-cost-on-ratio template imported from CanonicalJBand to establish matched-zero and nonnegativity.
claimFailureMode enumerates material failure types; FatigueFractureCert asserts $J(1)=0$ and $J(x)≥0$ for $x>0$, where $J(x)=(x+x^{-1})/2-1$, via the six-clause template.
background
The module sits inside the master cert chain for B-tier domain openings under Plan v7. It imports the CanonicalJBand template, whose doc states: 'The six-clause J-cost-on-ratio template is used across the master cert chain... Each domain cert proves: 1. matched-zero: J(1)=0 2. nonneg: J(x)≥0 for x>0'. Sibling declarations introduce FailureMode as the classification of failure types and fatigueFractureCert as the domain-specific instance of the template.
proof idea
This is a definition module, no proofs. It declares the FailureMode type and failureModeCount, then instantiates the imported CanonicalJBand template to produce FatigueFractureCert.
why it matters in Recognition Science
The module supplies the materials entry in the Plan v7 domain certs and feeds the master cert chain. It extends the CanonicalJBand template to fatigue and fracture, ensuring the J-cost band (matched-zero and nonnegativity) holds for defectDist in this domain.
scope and limits
- Does not assign specific phi-ladder rungs to elements.
- Does not compute numerical fatigue limits or crack growth rates.
- Does not incorporate temperature or corrosion effects.
- Does not simulate dynamic loading or cyclic stress histories.