← The evidence ledger
Evidence row 2201227
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://structural-calc.x402tookit.com/stress-strain
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 70db032eb1100dc6fbcf5b78817a8e79e3988ae94352c247cf244f71bede8e84
- Leaf
- 0x0ae749a8a846f7957e06d48d2eb7735f156bd92b0554f4d1d2cd0db611ad186d
What was observed
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"raw": {
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],
"description": "Axial stress, strain and elongation from load, area, E and length; thermal strain/stress; factor of safety vs yield.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"E": 200000,
"area": 500,
"force": 100000,
"length": 2000,
"yieldStress": 250
},
"type": "http"
},
"output": {
"example": {
"appliedStress": 200,
"asOf": "2026-10-21T05:44:09.499Z",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"elongation": 2,
"factorOfSafety": 1.25,
"freeThermalElongation": null,
"mode": "tension",
"notChecked": [
"EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…",
"stress concentrations, buckling of compression members (see /column-buckling), bending, fatigue, creep",
"…2 more"
],
"reasons": [
"Free thermal expansion causes strain but no stress.",
"EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…"
],
"restrained": false,
"source": "axial stress sigma = P/A, Hooke's law, delta = P L/(A E), thermal strain alpha*dT (Gere and Goodno), computed locally",
"strain": 0.001,
"strainMicro": 1000,
"summary": "Stress 200 MPa (N/mm2), strain 0.001, elongation 2 mm, yield/stress = 1.25. Educational estimate only.",
"thermalStrain": null,
"thermalStress": null,
"totalStress": 200,
"units": {
"area": "mm2",
"density": "kg/m3",
"expansion": "1/degC",
"force": "N",
"inertia": "mm4",
"length": "mm",
"moment": "N*mm",
"sectionModulus": "mm3",
"stress": "MPa (N/mm2)",
"system": "si",
"temperature": "degC",
"torque": "N*mm",
"udl": "N/mm (= kN/m)"
},
"verdict": "BELOW_YIELD",
"warning": "EDUCATIONAL ESTIMATE, NOT ENGINEERING DESIGN: textbook closed-form formulas with idealised assumptions; no building-code or standard compliance check, no load or resistance factors, no safety verifica…",
"yieldStress": 250
},
"type": "json"
}
},
"schema": {
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"properties": {
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"properties": {
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"type": "string"
},
"queryParams": {
"properties": {
"E": {
"description": "Elastic modulus (MPa or psi); needed for strain and elongation",
"type": "number"
},
"alpha": {
"description": "Thermal expansion coefficient (1/degC or 1/degF), e.g. 12e-6 for steel in SI",
"type": "number"
},
"area": {
"description": "Cross-section area (mm2 or in2), greater than 0",
"type": "number"
},
"deltaT": {
"description": "Temperature change (degC or degF); needs alpha",
"type": "number"
},
"force": {
"description": "Axial force (N or lbf), positive = tension, may be negative for compression; absolute value up to 1e12",
"type": "number"
},
"length": {
"description": "Member length (mm or in); needed for elongation",
"type": "number"
},
"restrained": {
"description": "true if both ends are fully fixed against the thermal movement (default false = free to expand)",
"type": "boolean"
},
"units": {
"description": "si (default: mm, N, MPa, N*mm) or us (in, lbf, psi, in*lbf); every length, force, stress and modulus you send and receive uses that one system",
"type": "string"
},
"yieldStress": {
"description": "Yield stress (MPa or psi) for the factor of safety",
"type": "number"
}
},
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"area"
],
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"degraded": {
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"disclaimer": {
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},
"elongation": {
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"number"
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},
"factorOfSafety": {
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"number"
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},
"freeThermalElongation": {},
"mode": {
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"strain": {
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},
"strainMicro": {
"type": [
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},
"summary": {
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},
"thermalStrain": {},
"thermalStress": {},
"totalStress": {
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},
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},
"density": {
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},
"expansion": {
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"force": {
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"inertia": {
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"length": {
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"moment": {
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"sectionModulus": {
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"temperature": {
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}
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},
"lastUpdated": "2026-11-02T04:07:55.723Z",
"quality": {
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"lastCalledAt": "2026-11-02T04:07:55.497Z"
},
"resource": "https://structural-calc.x402tookit.com/stress-strain",
"serviceName": "Structural and Beam Calculators",
"tags": [
"stress",
"strain",
"thermal",
"factor-of-safety"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Axial stress, strain and elongation from load, area, E and length; thermal strain/stress; factor of safety vs yield."
}What the leaf hashes
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- Day root
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- Chained
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- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af