Engineering Reverse Analysis

Give the model an assembly (drawing, photo, description, or part) and this three-part prompt:

Analyze this assembly/unit:

1. DECOMPOSITION: Break it down into its constituent components/parts.
   List each component, its apparent function, and how it connects to neighbors.

2. CONSTRAINTS: For each component, identify likely materials and specs,
   citing only recognized standards (GOST, ISO, ASTM, DIN). If a material/spec
   cannot be tied to a standard, say so explicitly — do not guess.

3. VERIFICATION: For every claim above, mark it as:
   - [VERIFIED] — directly observable from provided data
   - [INFERRED] — reasonable engineering assumption, state the reasoning
   - [UNCERTAIN] — guess/pattern-match, requires engineer confirmation

Do not calculate tolerances, strength, or load-bearing values. Flag these as
"requires CAE/manual calculation" instead.

Output feeds into a draft ТЗ (technical specification) — never directly into production or CAD without engineer sign-off.

Progress:

• Step 1: Define scope — single node/unit, not full system (keep decomposition tractable)
• Step 2: Decompose — list components, hierarchy, connections
• Step 3: Constrain — map each component to standards (GOST/ISO/ASTM); refuse to invent specs with no standard basis
• Step 4: Verify — tag every statement VERIFIED / INFERRED / UNCERTAIN
• Step 5: Route UNCERTAIN items back to the engineer as open questions, not as answers
• Step 6: Package into draft ТЗ format; explicitly exclude final tolerances/strength calculations
• Step 7: Engineer reviews, corrects, and performs final calculations in CAD/CAE

Never let AI output skip steps 4–7. The verification tagging is the trust mechanism — it's what lets a skeptical engineer accept the 80% that's solid and focus review time on the 20% flagged uncertain.

Example 1: Input: Photo of a bearing assembly from a competitor's gearbox. Output:

DECOMPOSITION:
- Outer race, inner race, rolling elements (balls), cage, two seals

CONSTRAINTS:
- Bearing type pattern matches deep-groove ball bearing per GOST 8338-75
- Seal material likely NBR rubber (common per GOST 9833) [INFERRED]
- Exact steel grade of races: cannot determine from photo alone [UNCERTAIN]

VERIFICATION:
- [VERIFIED] Component count and general geometry (visible in photo)
- [INFERRED] Bearing standard family, based on visual proportions
- [UNCERTAIN] Steel grade, tolerance class, load rating — requires
  physical inspection or manufacturer datasheet

NOT CALCULATED: load capacity, fatigue life — engineer to verify in CAE.

Example 2: Input: "Разбери этот кронштейн и предложи материал." Output: Decomposes into mounting plate + rib + bolt holes; proposes Steel 3 (Ст3) per GOST 380-2005 as [INFERRED] based on typical bracket applications; flags "exact grade depends on expected load, which was not provided" as [UNCERTAIN]; explicitly states no strength calculation performed.