Thermal Stress Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t4-046

Effect

Computation or source lookup only

Input and validation requirements

The extreme finite inputs produce a mathematical result of 10^613 Pa, which overflows JavaScript double-precision arithmetic to Infinity. The instrument should reject or range-check nonphysical/extreme inputs rather than present Infinity as a normal stress result.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "E": 200000000000,
    "alpha": 0.000012,
    "delta_T": 50,
    "units": "E in Pa; alpha in 1/K; delta_T in K"
  },
  "expected_outputs": {
    "sigma_thermal_Pa": 120000000,
    "sigma_thermal_MPa": 120
  },
  "working": "σ = E × α × ΔT\n= 200,000,000,000 × 0.000012 × 50\n= 2,400,000 × 50\n= 120,000,000 Pa\n= 120 MPa\nLiteral formula result is positive; physically, under tensile-positive convention, restrained heating corresponds to -120 MPa compression."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche4/tranche4-results.json