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Scaffold Void Volume Fraction

Describe an explicitly supplied scaffold bulk/solid volume partition without estimating pore connectivity.

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Description

Calculate scaffold void volume and bulk-volume void fraction.

Bench measurements require explicit signal units, calibration signs, geometry and reference conditions. Engineering strain differs from final-length ratio, secant stiffness differs from a material modulus, and nominal contact area differs from actual conductive contact. A supplied coefficient or certificate reference does not establish device validity.

Calculate scaffold void volume and bulk-volume void fraction.

When to use this tool

Use Scaffold Void Volume Fraction when you already have bulkVolume, solidVolume and need to calculate scaffold void volume and bulk-volume void fraction.

How to use the tool and how it works

  1. Enter bulkVolume, solidVolume. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read voidVolume, voidFraction. Use the output convention below.

Require bulkVolume>0 and solidVolume within [0,bulkVolume]; return bulk-solid and (bulk-solid)/bulk.1

Input fieldMeaning and unitsAccepted input
bulkVolumeBulk VolumeRequired. Finite number; strictly above 0.
solidVolumeSolid VolumeRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
voidVolumeVoid VolumeRequired. Finite number.
voidFractionVoid FractionRequired. Finite number.
json
{
  "input": {
    "bulkVolume": 10,
    "solidVolume": 3
  },
  "output": {
    "voidVolume": 7,
    "voidFraction": 0.7
  }
}

Limitations and assumptions

  • Volume definitions must be comparable. No pore network, fluid accessibility, tissue response or physical scaffold is analyzed.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use verified instrument records, calibration data and a complete device/material model. Evaluate uncertainty, operating conditions and appropriate professional requirements before interpreting local ratios or labels as performance, fitness or safety.

References

  1. Calculation and input contract: bioengineering/scaffold-void-volume-fraction — tool.io

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