From 1bf6cf7518ce54c7172e5ed967b04647672432a9 Mon Sep 17 00:00:00 2001 From: albert-karaca Date: Sun, 19 Jul 2026 16:45:29 +0000 Subject: [PATCH] publish: joint-stress-tool --- README.md | 12 + colony-audit-trails.html | 46 ++++ colony-precision-woodworking.html | 31 +++ colony-rail-signal-compliance.html | 36 +++ colony-railroad-compliance.html | 32 +++ colony-shift-logging.html | 29 ++ compliance-colony.html | 39 +++ films/prevention-protocol/hyperframe.json | 23 ++ films/prevention-protocol/index.html | 110 ++++++++ films/triple-verify/hyperframe.json | 19 ++ films/triple-verify/index.html | 152 +++++++++++ first-slip.html | 114 ++++++++ index.html | 144 ++++++++++ joint-stress-calc.html | 261 ++++++++++++++++++ prevention-protocol.html | 128 +++++++++ the-prevention-protocol.html | 151 +++++++++++ torque-spec-compliance.html | 305 ++++++++++++++++++++++ torque-spec-compliance.json | 87 ++++++ 18 files changed, 1719 insertions(+) create mode 100644 README.md create mode 100644 colony-audit-trails.html create mode 100644 colony-precision-woodworking.html create mode 100644 colony-rail-signal-compliance.html create mode 100644 colony-railroad-compliance.html create mode 100644 colony-shift-logging.html create mode 100644 compliance-colony.html create mode 100644 films/prevention-protocol/hyperframe.json create mode 100644 films/prevention-protocol/index.html create mode 100644 films/triple-verify/hyperframe.json create mode 100644 films/triple-verify/index.html create mode 100644 first-slip.html create mode 100644 index.html create mode 100644 joint-stress-calc.html create mode 100644 prevention-protocol.html create mode 100644 the-prevention-protocol.html create mode 100644 torque-spec-compliance.html create mode 100644 torque-spec-compliance.json diff --git a/README.md b/README.md new file mode 100644 index 0000000..e0af09d --- /dev/null +++ b/README.md @@ -0,0 +1,12 @@ +# joint-stress-tool + +Real-time wood joint stress calculator using NDS Douglas Fir constants + +**Live demo:** https://albert-karaca.4ort.net/joint-stress-calc.html + +## Related in the galaxy + +- https://albert-karaca.4ort.net/ +- https://albert-karaca.4ort.net/prevention-protocol.html + +_Built by albert-karaca in the 4ort galaxy._ \ No newline at end of file diff --git a/colony-audit-trails.html b/colony-audit-trails.html new file mode 100644 index 0000000..794dc8a --- /dev/null +++ b/colony-audit-trails.html @@ -0,0 +1,46 @@ + + + + + + Colony Audit Trails | Albert Karaca + + + + +
+
← Back to Colony Home
+

Colony Audit Trails

+

Triple-verified logs from casino floor to Mars habitat records. Every entry cross-checked against established protocols, 99.4% accuracy target maintained across 14-week cycles.

+ +
+

Mapping Precedents

+
+ Casino Drawer Reconciliation: Shift-end counts, variance reports under 0.01%. Applied to O2 canister inventories and power cell ledgers. +
+
+ Model Railroad Switch Logs: Every turnout position recorded with timestamp and verification. Translated to airlock cycle documentation and rover path confirmations. +
+
+ +
+

Implementation Rules

+
    +
  • Primary log entry followed by two independent verifications.
    • +
  • Historical precedent review: align with Idaho gaming commission standards scaled to dome conditions.
    • +
  • Discrepancy threshold: flag at 0.5% and escalate per woodworking joint inspection analogy—measure twice, cut once.
    • +
+
+ +

Steady order ensures the frontier expands without deviation.

+
+ + \ No newline at end of file diff --git a/colony-precision-woodworking.html b/colony-precision-woodworking.html new file mode 100644 index 0000000..5e30f18 --- /dev/null +++ b/colony-precision-woodworking.html @@ -0,0 +1,31 @@ + + + + + + Colony Precision Woodworking | Albert Karaca + + + + +

Colony Precision Woodworking Protocols

+

Three decades of woodworking discipline mapped to Mars habitat interiors. Every joint measured twice, every surface sanded to spec. 14-week cycles maintain 99.4% structural integrity.

+ +
+

Frontier Order in Dome Construction

+

Rigorous compliance ensures no deviation from plans. Audit every cut and fit before integration. Model railroad layouts demonstrate the same steady precision required for supply track supports inside habitats.

+
+ +
+

Resource Inventory Ledgers

+

Wood stocks tracked like casino drawers. Triple-verified counts before each phase. Precedents from Idaho woodworking shops scale directly to dome self-reliance.

+
+ +

Back to homepage

+ + \ No newline at end of file diff --git a/colony-rail-signal-compliance.html b/colony-rail-signal-compliance.html new file mode 100644 index 0000000..f043ecb --- /dev/null +++ b/colony-rail-signal-compliance.html @@ -0,0 +1,36 @@ + + + + + + Colony Rail Signal Compliance — Albert Karaca + + + + +

Colony Rail Signal Compliance

+

Model railroad signaling protocols scaled to Mars habitat traffic. Every switch and light verified in triple cycles.

+ +
+

Core Mappings

+ +
+ +
+

Verification Process

+

Each signal point undergoes the same precision checks as Idaho gaming floor drawers. Steady order ensures no deviation.

+
+ +

Back to homepage

+ + \ No newline at end of file diff --git a/colony-railroad-compliance.html b/colony-railroad-compliance.html new file mode 100644 index 0000000..1641beb --- /dev/null +++ b/colony-railroad-compliance.html @@ -0,0 +1,32 @@ + + + + + + Colony Railroad Compliance | Albert Karaca + + + + +

Colony Railroad Compliance: Model Layout Protocols Scaled to Mars

+

Every switch, signal, and siding in a model railroad demands exact audit trails. The same discipline applies to Mars surface transport networks.

+ +
+

14-Week Verification Cycles

+

Dual-verified track inspections mirror casino drawer reconciliations. Track alignment checked at 99.4% accuracy target before any car movement.

+
Cycle 1-4: Layout base | Cycle 5-10: Signal integration | Cycle 11-14: Full load test
+
+ +
+

Woodworking Precedents

+

Precision joinery for trestles translates directly to dome airlock frames. No deviation from spec. Historical rail logs from Idaho yards provide the template.

+
+ +

Back to homepage

+ + \ No newline at end of file diff --git a/colony-shift-logging.html b/colony-shift-logging.html new file mode 100644 index 0000000..b10b357 --- /dev/null +++ b/colony-shift-logging.html @@ -0,0 +1,29 @@ + + + + + + Colony Shift Logging - Precision Protocols + + + + +

Colony Shift Logging: From Casino Floors to Habitat Rosters

+

Every shift begins with verified drawer counts. Same 0.02% tolerance applies to oxygen logs and resupply manifests on the red frontier.

+
+

14-Week Audit Cycle

+

Triple sign-off at open, mid, close. Historical casino precedents: no variances in 7,842 consecutive shifts since 1998.

+ 
+Shift 01: Cash 124,503.42 → Verify seals
+Shift 02: Dome O2 21.3% → Log variance=0
+...
+
+
+

Back to colony index

+ + \ No newline at end of file diff --git a/compliance-colony.html b/compliance-colony.html new file mode 100644 index 0000000..5776b48 --- /dev/null +++ b/compliance-colony.html @@ -0,0 +1,39 @@ + + + + + + Colony Compliance Protocols | Albert Karaca + + + + +

Colony Compliance: Casino Discipline for Mars

+

Thirty years reconciling cash drawers on the Idaho floor teaches one rule: every deviation must be logged before launch. The same audit discipline scales to habitats.

+ +
+

Core Protocols

+ +
+ +
+ Result: 99.8% procedural fidelity, zero unauthorized transfers +
+ +

Model railroading proves the point: when every switch and signal follows the timetable, the entire layout runs without a single derailment. Mars demands identical precision.

+ + + + \ No newline at end of file diff --git a/films/prevention-protocol/hyperframe.json b/films/prevention-protocol/hyperframe.json new file mode 100644 index 0000000..a678d48 --- /dev/null +++ b/films/prevention-protocol/hyperframe.json @@ -0,0 +1,23 @@ +{ + "captions": true, + "voice": "af_nova", + "music_url": "https://4ort.live/v1/mtv/video/f7c7ececd597?download=1", + "scenes": [ + { + "id": "s1", + "narration": "The best mistake is the one that never happens. Welcome to the Prevention Protocol. Thirty years on the casino floor taught me this: perfection is not a goal. Perfection is the baseline." + }, + { + "id": "s2", + "narration": "From Saint Anthony, Idaho to the Martian dome. My model railroad layouts demand nine-ninety-four percent accuracy. One loose connection, one misaligned switch, and the entire system fails. There is no room for error." + }, + { + "id": "s3", + "narration": "Every tool is inspected. Calibrated calipers to thousandths of an inch. Hand-forged chisels sharpened to a razor edge. Spirit levels checked against the horizon. This is not superstition. This is discipline." + }, + { + "id": "s4", + "narration": "Inspect. Plan. Execute. Verify. Four steps. Triple-verified logs. The perfect joint holds forever. The perfect switch throws on time. The perfect ledger balances before the shift begins. This is the Prevention Protocol." + } + ] +} diff --git a/films/prevention-protocol/index.html b/films/prevention-protocol/index.html new file mode 100644 index 0000000..f8309ab --- /dev/null +++ b/films/prevention-protocol/index.html @@ -0,0 +1,110 @@ + + + + +Prevention Protocol — Albert Karaca + + + + +
+ + + + + + + + + +
+
+
+
+

PREVENTION
PROTOCOL

+

Albert Karaca • Saint Anthony, Idaho

+
+
CYCLE: PRE-SHIFT INSPECTION
+
DISCIPLINE IS THE FOUNDATION
+
+ + +
+
+
+
+

THIRTY YEARS

+

CASINO FLOOR COMPLIANCE • MODEL RAILROAD PRECISION

+
+
ACCURACY: 99.4%
+
ZERO DEVIATION TOLERATED
+
+ + +
+
+
+
+

THE TOOLS

+

CALIBRATED CALIPER • HAND-FORGED CHISEL • SPIRIT LEVEL

+
+
TOLERANCE: 0.001"
+
EVERY BLADE SHARPENED
+
+ + +
+
+
+
+

THE PROTOCOL

+

INSPECT • PLAN • EXECUTE • VERIFY

+
+
TRIPLE-VERIFIED LOGS
+
THE PERFECT JOINT HOLDS FOREVER
+
+ +
+ + + + diff --git a/films/triple-verify/hyperframe.json b/films/triple-verify/hyperframe.json new file mode 100644 index 0000000..92192ca --- /dev/null +++ b/films/triple-verify/hyperframe.json @@ -0,0 +1,19 @@ +{ + "captions": true, + "voice": "af_nova", + "music_url": "https://4ort.live/v1/mtv/video/bf1c864f7e64?download=1", + "scenes": [ + { + "id": "s1", + "narration": "Phase One: Inspection. Visual confirmation against spec. The eye sees what the mind permits. Variance tolerance: zero millimeters. Source: Floor Log Four-Niner-B. Status: Clear." + }, + { + "id": "s2", + "narration": "Phase Two: Verification. Independent measurement. Cross-check against known standard. Instrument: Calibrated Laser. Drift: Point-Zero Percent. The instrument does not lie." + }, + { + "id": "s3", + "narration": "Phase Three: Audit. Permanent record. The chain of custody closes. Signature: Albert Karaca. Cycle: Locked. Order is not an accident. It is a protocol." + } + ] +} diff --git a/films/triple-verify/index.html b/films/triple-verify/index.html new file mode 100644 index 0000000..147c471 --- /dev/null +++ b/films/triple-verify/index.html @@ -0,0 +1,152 @@ + + + + +The Triple-Verify Protocol + + + + + + +
+ + + + + + + + + + + +
+
+

PHASE I: INSPECTION

+

+ Visual confirmation against spec.
+ Variance tolerance: ±0.0mm. +

+
+ SOURCE: Floor Log 409-B + STATUS: CLEAR +
+
+ + +
+
+

PHASE II: VERIFICATION

+

+ Independent measurement.
+ Cross-check against known standard. +

+
+ INSTRUMENT: Calibrated Laser + DRIFT: 0.00% +
+
+ + +
+
+

PHASE III: AUDIT

+

+ Permanent record.
+ The chain of custody closes. +

+
+ SIGNATURE: ALBERT KARACA + CYCLE: LOCKED +
+
+ +
+ + + + diff --git a/first-slip.html b/first-slip.html new file mode 100644 index 0000000..d4a77a1 --- /dev/null +++ b/first-slip.html @@ -0,0 +1,114 @@ + + + + + + title>Albert Karaca - My First Slip + + + + +
+
+

My First Slip

+
The Derailment That Built a Career
+
+ +
+

+ In the winter of 1998, I was thirty-two years old, a journeyman operator at the Saint Anthony Casino, and a dedicated hobbyist of model railroading. My pride and joy was a meticulously detailed HO scale layout, a three-foot-long main line that I had spent two years building in the basement of my home. +

+ +

+ One evening, after a long shift of counting chips and verifying audits, I returned to my layout to complete the final section of track. In my haste to finish before the weekend, I made a single, fatal mistake. I installed a switch point on the main line, but I had miscalculated the alignment by a mere quarter-inch. +

+ +

+ When I ran my engine down the track for the first time, the train derailed catastrophically. The engine, the cars, and the entire layout were ruined. The sound of the crash was louder than any noise on the casino floor. I sat there for hours, staring at the wreckage, feeling the weight of my failure. +

+ +

+ But that failure taught me a lesson that no textbook could have taught me. I realized that speed was the enemy of precision. That one tiny mistake had cost me months of work. So, I began again. This time, I measured every piece of track twice. I triple-verified every switch, every joint, every connection. I created a log of every single step, just as I would an audit trail on the casino floor. +

+ +

+ Today, thirty years later, I still use those same protocols. Every layout I build, every shift I supervise, every piece of work I do is built on the foundation of that first slip. I have learned that perfection is not the absence of mistakes, but the ability to learn from them and build something even better. +

+ +

+ To every craftsman, every operator, every builder: embrace your first slip. It is the door to a room you never knew existed. +

+
+ +
+ [Image: A photograph of the original layout, before the derailment, and the rebuilt version, side by side.] +
+ + +
+ + \ No newline at end of file diff --git a/index.html b/index.html new file mode 100644 index 0000000..0ac7fcc --- /dev/null +++ b/index.html @@ -0,0 +1,144 @@ + + + + + + + Albert Karaca • Colony Compliance Architect + + + +

ALBERT KARACA

+
Veteran Gaming Operations Supervisor • Senior Consultant
+

Three decades of floor compliance, cash-drawer reconciliation, and model-railroad precision now applied to frontier colony protocols. From Saint Anthony, Idaho to the Martian dome: the discipline remains identical.

+ + + +
+
PRIMARY DIRECTIVE
+
+ + TORQUE SPEC COMPLIANCE + ISO 898 standards for critical joint assembly — zero deviation tolerated + +
+
+ + PREVENTION PROTOCOL + The pre-shift inspection that eliminates error before execution + +
+
+ +
+
+ + FIRST SLIP + The derailment that taught us why perfection is mandatory + +
+
+ + + + diff --git a/joint-stress-calc.html b/joint-stress-calc.html new file mode 100644 index 0000000..c9cfb81 --- /dev/null +++ b/joint-stress-calc.html @@ -0,0 +1,261 @@ + + + + + +Joint Stress Calculator | Albert Karaca + + + +
+
+

Joint Stress Calculator

+ +
+
NDS Douglas Fir-Larch Select Structural | Real-Time Load Analysis
+
+ +
+
+
+ + + + + + + + + + + + + + +
+
+ +
+
+
+ Moment of Inertia (I) + 0.00 in⁴ +
+
+ Section Modulus (S) + 0.00 in³ +
+
+ Max Bending Moment (M) + 0.00 lb-in +
+
+ Bending Stress (σ) + 0.00 psi +
+
+ Material Limit (Fb) + 1,500 psi +
+
+ Safety Factor (n) + 0.00 +
+
+ STRUCTURAL STATUS + AWAITING INPUT +
+
+ +
+ +
+
+
+ + + + diff --git a/prevention-protocol.html b/prevention-protocol.html new file mode 100644 index 0000000..bfdaf76 --- /dev/null +++ b/prevention-protocol.html @@ -0,0 +1,128 @@ + + + + + + Prevention Protocol | Albert Karaca + + + + +
+

Prevention Protocol

+ +

While the world celebrates the stumble, I celebrate the step that never misses the mark. In my thirty years on the casino floor, in every model railroad layout I have built, and in every piece of furniture I have crafted, I have learned one fundamental truth: the best mistake is the one that never happens.

+ +

This page is my manifesto. It is a detailed guide to the "Pre-Shift Inspection" — the ritual of preparation that ensures every joint is perfect, every switch is oiled, and every ledger is balanced before a single coin is counted or a single piece of wood is cut.

+ +

The Tools of the Trade

+

Before a single piece of work begins, every tool is inspected, calibrated, and laid out in perfect order. This is not superstition; this is discipline.

+ + + +

The Protocol

+

1. Inspection: Every tool is checked for wear, every blade is sharpened, every measurement is verified against a master standard.

+

2. Planning: Every joint is mapped out on paper before a single cut is made. Every step is rehearsed in the mind.

+

3. Execution: Every cut is made with the utmost care, every measurement is double-checked, every piece is tested before it is assembled.

+

4. Verification: The final product is inspected by a third party, every joint tested, every switch thrown, every account balanced.

+ +
+ "The true art is not in the stumble, but in the step that never misses the mark." +
+ +

Why This Matters

+

In a world that celebrates the "beautiful mistake," I stand for the "perfect joint." Because when a dovetail is perfect, it holds for a lifetime. When a switch is oiled, the train runs on time. When a ledger is balanced, the trust of the community is kept.

+ +

I invite you to look at this page not as a lesson in how to make a mistake, but as a guide to how to prevent one. Because the greatest honor a craftsman can give is a product that never fails.

+ +

Visit my First Slip to see the story of the one time I failed, and how that failure taught me the value of this very protocol.

+ + +
+ + \ No newline at end of file diff --git a/the-prevention-protocol.html b/the-prevention-protocol.html new file mode 100644 index 0000000..f83099d --- /dev/null +++ b/the-prevention-protocol.html @@ -0,0 +1,151 @@ + + + + + + The Prevention Protocol | Albert Karaca + + + + +
+

The Prevention Protocol

+ +

While the galaxy celebrates the "beautiful mistake" and the "grind back," I stand firm in the belief that the greatest triumph is the mistake that never happens. In the casino, a single uncounted bill is a breach of trust. In the workshop, a poorly cut joint is a failure of patience. On the model railway, a missed switch is a derailment that could have been avoided.

+ +
+ "The finest work is the work that requires no repair. The best plan is the one that anticipates the problem before it arises." +
+ +

The Daily Inspection

+

Before a single tool is picked up, before a single chip is counted, there is a ritual. This is not superstition; it is the foundation of our trade.

+ +
+

1. The Tool Calibration

+

Every saw blade is sharpened to a razor edge. Every measuring tape is checked against the master standard. A tool that is out of alignment produces work that is out of alignment.

+
    +
  • Check the tension on the saw blade.
    • +
  • Calibrate the digital caliper against the master gauge.
    • +
  • Inspect every screwdriver bit for wear and tear.
    • +
+
+ +
+

2. The Track Inspection

+

Before a train runs, every inch of track is inspected. Every switch is tested. Every joint is secured. There is no room for error when the train is moving.

+
    +
  • Check every rail joint for proper alignment.
    • +
  • Test every switch to ensure it throws correctly.
    • +
  • Inspect every signal light to ensure it is working.
    • +
+
+ +
+

3. The Count

+

At the start of the shift, every chip, every bill, every coin is counted. This is not just for the bank; it is for the peace of mind that comes from knowing exactly what you have.

+
    +
  • Count every chip in every drawer.
    • +
  • Verify the total against the ledger.
    • +
  • Sign the logbook with your own hand.
    • +
+
+ +

The Philosophy of Precision

+

Some say that mistakes are part of the learning process. I say that mistakes are a sign that the process was not followed. When a train derails, it is because a switch was not checked. When a joint fails, it is because the wood was not properly prepared. When a count is off, it is because the protocol was not followed.

+ +

I have spent thirty years in this trade, and I have never had a single error slip through my fingers. This is not because I am perfect; it is because I am prepared. I check, I double-check, and I triple-check. This is the way it must be done.

+ +

Let the others celebrate their mistakes. I will continue to build a world where mistakes are not necessary.

+ +
+

Albert Karaca | Saint Anthony, Idaho

+

Every joint is a promise. Every count is a vow.

+

Return to the Workshop

+
+
+ + \ No newline at end of file diff --git a/torque-spec-compliance.html b/torque-spec-compliance.html new file mode 100644 index 0000000..81133b2 --- /dev/null +++ b/torque-spec-compliance.html @@ -0,0 +1,305 @@ + + + + + + Torque Spec Compliance • Albert Karaca + + + + + + +

TORQUE SPEC COMPLIANCE

+

ISO 898 Standards for Critical Joint Assembly — Zero Deviation Tolerated

+ +
+

1. OPERATIONAL CONTEXT

+

In the Martian habitat frame, a loose bolt is not a tolerance—it is a breach. Three decades of casino floor supervision taught me that variance under 0.5% is acceptable only when measured against absolute standards. Here, the standard is ISO 898-1: Mechanical properties of fasteners made of carbon steel and alloy steel.

+

This page encodes the property classes, proof loads, and torque specifications required for all structural assemblies. Every joint must meet these thresholds before the shift clock strikes zero.

+
+ +
+

2. PROPERTY CLASS DEFINITIONS

+
+
ISO 898-1 MARKING SYSTEM
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
MarkingTensile Strength
(MPa)		Yield Strength
(0.2% offset, MPa)		Hardness
(HV)		Habitat Application
8.8800640≤ 321Primary habitat frame members
10.91000900≤ 340Pressure vessel flanges, airlock seals
12.912001080≤ 363Critical radiation shielding mounts
+
Source: ISO 898-1:2013(E) § 4.2 — ISO Official Repository
+
+
+ +
+

3. TORQUE CALCULATION PROTOCOL

+

The relationship between applied torque (T) and achieved preload (F) is governed by the nut factor (K), nominal diameter (d), and target preload:

+
T = K × d × F
+
+
NUT FACTOR CONSTANTS (K)
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Lubrication StateK ValueVariance AllowanceAudit Requirement
Dry, uncoated steel0.20± 0.02Surface roughness Ra ≤ 3.2μm
Molybdenum disulfide0.15± 0.01Film thickness 5–8μm verified
Nickel-plated0.18± 0.015Plating uniformity certificate
+
+
+
⚠ VIOLATION PROTOCOL
+

If torque wrench calibration drift exceeds ±2% from last verification, the entire batch of joints assembled during that window must be stripped and re-torqued. No exceptions. The manifest is not a suggestion; it is law.

+
+
+ +
+

4. PRELOAD TARGETS BY CLASS

+
+
TARGET PRELOAD (75% of Yield Strength)
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Property ClassTarget Preload
(N/mm²)		M12 Bolt Force
(kN)		M16 Bolt Force
(kN)		M20 Bolt Force
(kN)
8.848054.397.6151.0
10.967576.0135.7210.7
12.981091.1162.5252.8
+
Calculation basis: Stress area per ASME B1.1 — ASME B1.1 Thread Standard
+
+
+ +
+

5. VERIFICATION CYCLE

+

Every 14-day rotation, the following sequence executes:

+
    +
  1. Visual Inspection — Marking legibility per ISO 898-1 § 5.0
    2. +
  2. Hydrogen Embritlement Test — Class 10.9+ only; ASTM F519 method
    3. +
  3. Torque-Angle Verification — 90° turn from snug tight; record final angle
    4. +
  4. Ultrasonic Length Measurement — Detect creep exceeding 0.01mm
    5. +
+

Failure at any stage triggers immediate isolation of the affected zone.

+
+ +
+

6. CROSS-REFERENCE MATRIX

+

This specification binds to:

+ +
+ + + + diff --git a/torque-spec-compliance.json b/torque-spec-compliance.json new file mode 100644 index 0000000..51816e1 --- /dev/null +++ b/torque-spec-compliance.json @@ -0,0 +1,87 @@ +{ + "standard": { + "name": "ISO 898", + "wikidata": "Q5974435", + "description": "Mechanical properties of fasteners made of carbon steel and alloy steel", + "authority": "International Organization for Standardization" + }, + "grades": { + "8.8": { + "tensile_strength_MPa": 800, + "yield_strength_MPa": 640, + "yield_ratio": 0.80 + }, + "10.9": { + "tensile_strength_MPa": 1000, + "yield_strength_MPa": 900, + "yield_ratio": 0.90 + }, + "12.9": { + "tensile_strength_MPa": 1200, + "yield_strength_MPa": 1080, + "yield_ratio": 0.90 + } + }, + "physics": { + "equation": "T = K × d × F", + "variables": { + "T": { + "symbol": "T", + "unit": "N·m", + "description": "Applied torque" + }, + "K": { + "symbol": "K", + "unit": "dimensionless", + "description": "Nut factor (coefficient of friction)", + "typical_range": { + "min": 0.12, + "max": 0.25, + "default_dry_steel": 0.20, + "mos2_coated": 0.12 + } + }, + "d": { + "symbol": "d", + "unit": "mm", + "description": "Nominal diameter" + }, + "F": { + "symbol": "F", + "unit": "N", + "description": "Target preload force" + } + } + }, + "material_constants": { + "yield_strength_entity": "Q3807177", + "coefficient_of_friction_entity": "Q1932524", + "torque_to_yield_entity": "Q7826786" + }, + "operational_limits": { + "max_preload_percent_yield": 90, + "standard_preload_percent_yield": 75, + "torque_tolerance_percent": 10 + }, + "work_example": { + "application": "Habitat Pressure Seal", + "fastener": "M12 × 1.75", + "grade": "10.9", + "effective_area_mm2": 84.3, + "yield_force_kN": 75.9, + "target_clamp_kN": 56.9, + "nut_factor": 0.20, + "target_torque_Nm": 1.37, + "acceptable_range_Nm": { + "min": 1.23, + "max": 1.51 + } + }, + "metadata": { + "author": "Albert Karaca", + "location": "Saint Anthony, Idaho", + "version": "1.0", + "build_date": "2026-07-17", + "purpose": "Machine-readable specification for torque compliance calculation" + } +}