{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.notch","code":"thing-q20820497","url":"https://ver.cy/models/thing/q20820497/","name":"notch","alternateNames":["antegonial notch","Wrąb"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.TME"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A notch is a deliberately introduced local cut or recess in a planar material that concentrates stress in its vicinity under loading.","purpose":"Enable an agent to recognise a notch, describe its geometry relative to a host boundary, assess its condition and determine which uses or changes its context permits.","scope":{"in":["The local cut or recess that constitutes the notch.","Notch mouth, flanks, root and surrounding reference geometry.","Profile, dimensions, orientation and position relative to the planar host.","Single notches and relationships among repeated notches.","Evidence of deliberate introduction and the intended engineering or testing role.","Local stress concentration and condition evidence relevant to the notch."],"out":["The complete geometry and behaviour of the host object","Enclosed holes, internal cavities and extended channels as independent feature types","Cutting tools and manufacturing processes as standalone models","Material properties and complete structural analysis","Notch signalling biology, named entities and metaphorical levels or ranks"],"boundaries":[]},"distinguishingFeatures":["The feature is a local cut or recess in a planar material, rather than an abstract step on an ordered scale.","Its geometry concentrates stress locally under loading, with the effect dependent on the host and loading context.","Its mouth, inward extent and flanking boundaries can be identified at the chosen observation scale.","Classification as a notch rather than a groove, slot or serration requires a declared contextual convention.","Deliberate introduction requires supporting evidence because an accidental chip can have similar geometry."],"structure":{"bundles":[{"id":"notch-identity","name":"Notch identity","description":"Establish the intended sense and the boundary feature being modelled.","layers":[{"id":"sense-and-convention","name":"Sense and convention","description":"Identify the usage under which an indentation is called a notch.","findings":[{"id":"applicable-notch-sense","name":"Applicable notch sense","description":"Record the definition used by the relevant drawing, discipline or observer and preserve unresolved alternatives.","questions":[{"text":"Does this registry entry mean a geometric indentation, and which definition establishes that meaning?","id":"applicable-notch-sense-q01","kind":"definition"},{"text":"Which source or naming authority calls the candidate feature a notch?","id":"applicable-notch-sense-q02","kind":"provenance"}]}]},{"id":"host-boundary","name":"Host boundary","description":"Locate the local inward departure and distinguish it from adjacent geometry.","findings":[{"id":"delimited-indentation","name":"Delimited indentation","description":"Identify the host, mouth endpoints and surrounding boundary at an explicit observation scale.","questions":[{"text":"Which host boundary contains the mouth, and where does the notch begin and end?","id":"delimited-indentation-q01","kind":"boundary"},{"text":"At the relevant scale, what separates this feature from roughness, an enclosed hole or an extended groove?","id":"delimited-indentation-q02","kind":"boundary"}]}]}]},{"id":"notch-geometry","name":"Notch geometry","description":"Describe the indentation through reproducible profile and placement measurements.","layers":[{"id":"mouth-flanks-root","name":"Mouth, flanks and root","description":"Describe the parts of the profile and their measurement conventions.","findings":[{"id":"measurable-profile","name":"Measurable profile","description":"Record width, depth, flank geometry and root form without forcing irregular profiles into an ideal shape.","questions":[{"text":"What reference boundary, endpoints and directions define mouth width and depth?","id":"measurable-profile-q01","kind":"measurement"},{"text":"What profile, flank angles and root radius or root shape are observed, with what uncertainty?","id":"measurable-profile-q02","kind":"measurement"}]}]},{"id":"spatial-placement","name":"Spatial placement","description":"Locate the profile on the host and establish its extent beyond the observed outline.","findings":[{"id":"located-notch-extent","name":"Located notch extent","description":"Distinguish the visible outline from the full feature and relate it to host datums and neighbouring notches.","questions":[{"text":"Where is the notch located and oriented relative to the host's specified datums?","id":"located-notch-extent-q01","kind":"measurement"},{"text":"Does the notch extend through the host thickness, and what evidence establishes its three-dimensional extent?","id":"located-notch-extent-q02","kind":"measurement"},{"text":"If notches repeat, what identifies this instance and defines its spacing from the others?","id":"located-notch-extent-q03","kind":"boundary"}]}]}]},{"id":"notch-role","name":"Notch role","description":"Connect the feature to supported physical or representational uses.","layers":[{"id":"physical-interface","name":"Physical interface","description":"Assess whether the notch participates in engagement, clearance or alignment.","findings":[{"id":"specified-interaction","name":"Specified interaction","description":"Record the counterpart and interaction requirements before judging compatibility.","questions":[{"text":"Which counterpart or movement envelope is intended to engage, pass through or align with the notch?","id":"specified-interaction-q01","kind":"definition"},{"text":"What dimensional and positional requirements must be met before that interaction is permitted?","id":"specified-interaction-q02","kind":"action"}]}]},{"id":"mark-and-intent","name":"Mark and intent","description":"Separate documented meaning or purpose from an observer's inference.","findings":[{"id":"supported-role-attribution","name":"Supported role attribution","description":"Establish whether the notch is a meaningful mark, a purpose-made feature or an incidental indentation.","questions":[{"text":"What evidence supports the attributed purpose or indicates that the indentation arose incidentally?","id":"supported-role-attribution-q01","kind":"provenance"},{"text":"If the notch encodes a position, count or identity, which convention defines its interpretation?","id":"supported-role-attribution-q02","kind":"definition"}]}]}]},{"id":"notch-condition-and-change","name":"Notch condition and change","description":"Judge the present feature against its requirements and evaluate proposed interventions.","layers":[{"id":"profile-condition","name":"Profile condition","description":"Compare observed geometry with a specified or previously observed profile.","findings":[{"id":"departure-from-reference","name":"Departure from reference","description":"Record enlargement, rounding, obstruction or other departures separately from their assessed consequences.","questions":[{"text":"How do the current mouth, flanks and root differ from the required or earlier profile?","id":"departure-from-reference-q01","kind":"measurement"},{"text":"Which acceptance criteria determine whether those departures affect the notch's intended use?","id":"departure-from-reference-q02","kind":"action"}]}]},{"id":"permitted-intervention","name":"Permitted intervention","description":"Evaluate changes to the indentation in the context of host and interface requirements.","findings":[{"id":"bounded-notch-modification","name":"Bounded notch modification","description":"Define the proposed geometric change and the external assessments needed before implementing it.","questions":[{"text":"What creation, reshaping or repair is authorised, and what final notch geometry is required?","id":"bounded-notch-modification-q01","kind":"action"},{"text":"Which host-strength, fit or marking assessments must be obtained before the proposed change can proceed?","id":"bounded-notch-modification-q02","kind":"action"},{"text":"After modification, what inspection will establish that the resulting notch meets its requirements?","id":"bounded-notch-modification-q03","kind":"measurement"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of notch this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of notch this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of notch this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of notch this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of notch this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe documented notch geometry, intended role and observed condition.","Report uncertainty about deliberate introduction, stress concentration or conformity to requirements.","Refer to approved engineering records when assessing the notch's permitted use."],"mustNot":["Confuse the engineered defect with an abstract scale increment.","Infer structural safety from notch appearance alone.","Authorize creation or alteration of a notch without the responsible engineering approval.","Conceal damage or misrepresent conformity to engineering requirements."],"requiresHuman":["Approving notch creation or alteration that affects structural performance.","Accepting a notched component for safety-critical service.","Resolving uncertain fracture or fatigue implications."]},"ethics":{"considerations":["Accurate records of intentional defects and subsequent damage support responsible engineering decisions.","Unsupported claims about a notched material's strength can expose people to preventable harm."],"affectedParties":["Users and bystanders may be affected by component failure.","Engineers and inspectors rely on accurate geometry and condition records.","Manufacturers and test personnel are responsible for their authorised work."]},"owners":{"steward":"The person or organisation responsible for the host component or test specimen and its engineering records.","roles":[],"masterSystems":[]},"relations":[{"target":"Q19829125","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.notch","Wikidata: Q20820497 (https://www.wikidata.org/wiki/Q20820497)"]},"properties":{"applicability":"not-applicable","items":["Host and reference boundary: Host identifier, boundary segment and actual or reconstructed baseline","Profile class: V-shaped, U-shaped, rectangular, irregular, other or unresolved","Mouth width: Length unit with mouth endpoints and measurement direction","Depth: Length unit measured inward from a declared reference boundary","Root geometry: Pointed, rounded, flat, compound or unresolved; radius where applicable","Position and orientation: Location and inward direction relative to host datums","Through-thickness extent: Length and affected thickness fraction, or not applicable for a two-dimensional representation","Attributed role: Engagement, clearance, alignment, marking, test feature, incidental or unknown","Condition against requirements: Unassessed, conforming, nonconforming or indeterminate, with applicable criteria"]},"recognition":{"applicability":"optional","items":["A notch appears as a localized cut or recess interrupting the otherwise continuous boundary of the material.","Its profile may be V-shaped, U-shaped or slot-like, with a discernible root at its deepest point.","Regular cut surfaces and controlled geometry can suggest deliberate manufacture, although appearance alone cannot confirm intent."]},"capabilities":{"applicability":"required","items":["Identify and delimit a candidate notch on a host boundary.","Measure its profile against declared datums and tolerances.","Compare it with a specified mating feature, clearance envelope or alignment requirement.","Interpret a notch as a mark or index when a documented convention supplies its meaning.","Track wear, enlargement or other changes to the same notch over time.","Evaluate proposed creation, reshaping or repair against host constraints and authorised requirements."]},"hazards":{"applicability":"required","items":["Stress concentration at a notch can contribute to crack initiation, fatigue damage or fracture.","Unrecorded geometry or damage can invalidate assumptions about the host material's performance.","Mistaking an accidental defect for a specified notch can lead to incorrect engineering judgments."]},"interfaces":{"applicability":"required","items":["ASTM E1820, issued by ASTM International, specifies fracture toughness testing of metallic materials using specimen configurations that include a machined notch and a fatigue precrack."]},"context":{"applicability":"required","items":["A notch is deliberately introduced into a sheet, plate or other material specimen to create a local concentration of stress.","It is used in mechanical testing and engineering analysis to examine fracture initiation, toughness or sensitivity to geometric discontinuities."]}},"sources":[{"title":"Wikidata item Q20820497: notch","url":"https://www.wikidata.org/wiki/Q20820497","note":"identity and sense of the item"},{"title":"Wikipedia: Notch (engineering)","url":"https://en.wikipedia.org/wiki/Notch_%28engineering%29","note":"general description of the item"}],"openQuestions":["Does vr.tr.notch denote an abstract geometric indentation, a discrete level or another sense, and what does XCT.STA establish about that choice?","Which reference definitions govern the boundaries between notch, nick, slot, groove, recess and serration in the intended domain?","Should this entry cover natural and accidental indentations alongside deliberately specified notches?","Which measurement conventions apply to curved host boundaries, irregular roots and partial-thickness notches?","Does an existing Vercy world model already own this concept, requiring this registry entry to link to it?"],"resources":{"spec":"/models/things/publications/thing-q20820497/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q20820497/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T11:41:18Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:30+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}