{
  "title": "Measured properties before and after joining: one 6061 study",
  "source": {
    "authors": [
      "Sergey Malopheyev",
      "Igor Vysotskiy",
      "Daria Zhemchuzhnikova",
      "Sergey Mironov",
      "Rustam Kaibyshev"
    ],
    "title": "On the Fatigue Performance of Friction-Stir Welded Aluminum Alloys",
    "year": 2020,
    "doi": "10.3390/ma13194246",
    "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC7579519/",
    "locator": "Table 4; sections 2.1, 2.2, 2.5 and 3.2",
    "license": "CC BY 4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "Adapted from Malopheyev et al. (2020), Table 4. DOI: 10.3390/ma13194246. CC BY 4.0."
  },
  "material": "6061 aluminium alloy, initially extruded and T6-tempered",
  "joint_condition": "Double-sided friction-stir joint; artificial ageing after welding",
  "test": {
    "type": "Static transverse tensile test to failure",
    "temperature": "ambient",
    "nominal_strain_rate_per_second": 0.001,
    "specimens_per_condition": "at least two; exact number unspecified",
    "joint_fracture_location": "heat-affected zone"
  },
  "uncertainty": "Transcribed reported plus-minus values; statistic undefined in inspected text. Do not label SD, SE, or confidence intervals.",
  "transforms": [
    "Verbatim numerical transcription into six rows",
    "Separate panels retain original units",
    "Derived central-value ratio = 100 * joint value / base value; no uncertainty propagated"
  ],
  "central_value_ratios_percent": {
    "Yield strength": 89.55696202531645,
    "Ultimate tensile strength": 85.91160220994475,
    "Elongation to failure": 33.333333333333336
  },
  "limits": [
    "Not a simulation",
    "No statistical significance or equivalence inference",
    "No generalisation to all alloys or joining methods",
    "No inference about corrosion, fatigue or service safety from this table",
    "No fabrication or process optimisation instructions"
  ],
  "accessibility": {
    "svg_role": "img",
    "svg_title_and_description": true,
    "description": "6061 alloy, initially T6-tempered. Base versus post-weld-aged friction-stir joint. Yield strength: 316 plus or minus 3 versus 283 plus or minus 7 MPa. Ultimate tensile strength: 362 plus or minus 1 versus 311 plus or minus 12 MPa. Elongation to failure: 9 plus or minus 1 versus 3 plus or minus 1 percent. Reported plus-minus statistic is undefined; at least two specimens per condition. These values do not establish significance, equivalence, or service safety.",
    "note": "HTML integration should provide the CSV values as a native accessible table; PDFs are visual charts, not tagged-PDF accessibility certification."
  },
  "outputs": [
    "joining-properties.csv",
    "joining-properties.svg",
    "joining-properties.pdf",
    "joining-properties-mobile.svg",
    "joining-properties-mobile.pdf"
  ]
}