Engineering boundary
Supports engineering review and feasibility assessment. Not a substitute for qualified engineering judgment, testing, certification, or regulatory approval.
Community sandbox
Explore pre-built feasibility screenings
Curated case studies anyone can open without an account. Each demo shows recommendation, risks, validation needs, evidence, and limits from a sector example.
Prefer one deep industrial walkthrough first? Open the public industrial Screening Record.
NASA spacecraft latch
NiTi latch actuator for hold-down and release. Expert pilot case study with published correction and retest.
Community demo. Curated case study for learning. Not a live Screening Record for your program.
Screening recommendation
Engineering Review Required. Material path: NiTi wire: lot-specific DSC required before commitment
Next action: Establish lot-specific stress and strain limits, transformation temperatures, and the loaded path before defining a controlled-test envelope.
- Axial stress demand is calculated, but capability remains unassessed until a cited allowable is on the record.
- Required strain is calculated, but stroke capability remains unassessed until documented strain capacity is on the record.
Supported by 3 cited sources. Proceed-family outcomes stay withheld when evidence is missing.
Decision, readiness, risk, and confidence indexes are withheld on this record. They do not set the engineering disposition.
Dominant risks
- Functional fatigue evidence gap
- Thermal margin vs Af unverified for flight lot
- Loaded actuation not demonstrated on this record
Validation still required
- Lot-specific DSC (ASTM F2004)
- Functional fatigue screening at mission temperature
- Loaded force-displacement under the latch path
Assumptions
- Assumed Af 10 C above coldest mission temp
- Wire diameter screening estimate only
- No lot certificate attached
Limitations
- Screening-level assessment. Not FEA or flight certification.
- Decision indexes are withheld on this record.
Supporting sources
- NASA NESC SMA guidance
- Expert pilot rubric: latch concept
- POSTMORTEM-001 correction and retest note
Design-review agenda
- Transformation temperature margin
- Fatigue test plan
- Release mechanism redundancy
- Loaded actuation evidence