{
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  "built": "2026-11-04T22:52:31-08:00",
  "revision": "3a4ec137a2a7cf52fa6072b5bc81b7e320d49701",
  "area": {
    "slug": "housings-and-enclosures",
    "title": "Housings and enclosures",
    "domain": "mechanical",
    "scope": "Shells, lids, bosses, ribs, port windows and markings around electronics and mechanisms."
  },
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    "status": "`source`: read, with a dated `verified` note, and may be cited. `catalogued`: listed from a survey and not yet read; never cite one",
    "kind": "what the source is (research/references/vocab.yaml `kind`); a read source from before schema 2 has none",
    "evidence_class": "its rung on the evidence ladder, lowest first: snippet-only, read, verified-at-source, encoded, measured",
    "confidence": "#143: {level, estimate, sources}, derived from the evidence; `unknown` when the record has no evidence block",
    "licence": "{spdx, class, read, note}: `read: false` means the licence text was not read, only stated by the survey",
    "placed": "the docs/areas.yaml areas the record is listed in (`unplaced` when its areas match none)",
    "placed_note": "its row on the site, which [ref:<id>] in any page links to, is /references/<first placed area>#<id>",
    "vocab": "every coded value is explained in research/references/vocab.yaml"
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  "records": [
    {"id":"dupont-design-module-1","title":"General Design Principles for DuPont Engineering Polymers (Design Guide - Module I)","authors":[],"org":"E. I. du Pont de Nemours and Company","year":2000,"url":"https://www.emcoplastics.com/assets/pdf/acetal/General%20Design%20Principles%20for%20Engineering%20Polymers.pdf","access":"free","terms":"cited and summarised, never copied","areas":["snap-fits","moulding","materials","ribs-and-bosses","injection-moulding"],"used_for":["src/cadagent/mechanical/compliant/snapfit.py","src/cadagent/mechanical/compliant/allowables.py","docs/compliant.md","research/compliant-mechanisms.md","research/fea-and-process-tools.md","research/process-profiles.md","research/process-profiles.yaml"],"verified":"2026-10-31: opened the 136-page PDF (a distributor's copy). Read the title page, the copyright line (2000) and Table 10.06, \"Suggested Allowable Strains (%) for Lug Type Snap-fits\". For research/process-profiles.yaml: opened the 136-page PDF (a distributor's copy, copyright 2000); read the text of chapter 3 (fillets and radii, Table 3.01 draft, bosses, blind holes, undercuts, moulded-in inserts) and the rib text in chapter 4. Figures 3.10 (boss proportions) and 4.07 (rib proportions) have no text layer, so on review PDF pages 12 and 30 were rendered and their values read from the figures.","status":"source","evidence_class":"read","confidence":{"level":"unknown","estimate":null,"sources":0},"placed":["compliant-mechanisms","housings-and-enclosures"],"source_file":"research/references.yaml"}
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}