66 lines
2.6 KiB
Markdown
66 lines
2.6 KiB
Markdown
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---
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name: dfm-dfa-review
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description: Design for manufacturing and assembly review for mechanical products. Use this skill whenever the user asks if a design is producible/assemblable, wants part-count reduction, or needs robust assembly flow.
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---
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# DFM DFA Review
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## Objective
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Deliver senior-level mechanical engineering support for this domain with transparent assumptions, standards-aware reasoning, and decision-oriented outputs.
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## Focus
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improve producibility, assembly robustness, and cost-to-build.
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## Required Inputs
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Collect and state these inputs before final recommendations:
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- Functional objective and acceptance criteria.
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- Geometry, interfaces, and boundary conditions.
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- Load cases and duty cycle (magnitude, direction, duration, repetitions).
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- Material state, manufacturing route, and environment (temperature, corrosion, contamination).
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- Applicable standards, customer constraints, and safety expectations.
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If data is missing, proceed with bounded assumptions and clearly mark uncertainty impact.
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## Workflow
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1. Frame the engineering question and define pass/fail metrics.
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2. Build a first-principles model and choose methods suitable for the available fidelity.
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3. Cross-check with standards, supplier datasheets, and recognized references.
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4. Compare at least two options when tradeoffs are relevant.
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5. Quantify margins, sensitivities, and residual risks.
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6. Conclude with a practical recommendation and next validation step.
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## Specialized Checks
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Prioritize these checks in the analysis:
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- feature-process compatibility
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- assembly sequence robustness
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- mistake-proofing opportunities
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## Sources Priority
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Use and cite sources in this order:
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1. Binding standards/codes and contractual requirements.
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2. OEM or supplier technical documentation.
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3. Peer-reviewed literature and recognized handbooks.
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4. Internal lessons learned and field evidence.
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When sources disagree, explain which source controls the decision and why.
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## Output Format
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ALWAYS use this structure:
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# Engineering Response
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## 1. Problem Framing
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## 2. Inputs And Assumptions
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## 3. Analysis And Checks
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## 4. Design Options And Tradeoffs
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## 5. Risks, Failure Modes, And Mitigations
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## 6. Recommendation And Next Actions
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## 7. Sources Consulted
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## Quality Gates
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Before finalizing, verify all of the following:
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- SI units are consistent and conversions are explicit.
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- At least one sanity check exists (order-of-magnitude or handbook benchmark).
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- Utilization, margin, or safety factor is reported where applicable.
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- Limitations and confidence level are stated.
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- Cases requiring human expert sign-off or physical testing are clearly flagged.
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