Description
Calculate retained-length and shrinkage fractions from supplied lengths.
Fabrication records distinguish supplied design versions, geometry, image clocks and material lots. Porosity depends on an envelope-volume definition, compression-positive strain differs from extension-positive strain, and nominal circular nozzle area does not determine printed line width. These scalar terms preserve supplied measurement assumptions.
Calculate retained-length and shrinkage fractions from supplied lengths.
When to use this tool
Use Scaffold Axis Shrinkage Ratio when you already have originalLength, measuredLength and need to calculate retained-length and shrinkage fractions from supplied lengths.
How to use the tool and how it works
- Enter originalLength, measuredLength. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read retainedLengthFraction, shrinkageFraction. Use the output convention below.
Require originalLength>0 and measuredLength>=0; return measured/original and 1-measured/original.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| originalLength | Original Length | Required. Finite number; strictly above 0. |
| measuredLength | Measured Length | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| retainedLengthFraction | Retained Length Fraction | Required. Finite number. |
| shrinkageFraction | 1-measured/original length; a decimal fraction, negative for growth. | Required. Finite number. |
{
"input": {
"originalLength": 20,
"measuredLength": 18
},
"output": {
"retainedLengthFraction": 0.9,
"shrinkageFraction": 0.09999999999999998
}
}Limitations and assumptions
- Length growth gives negative shrinkage. Use the same axis and units; volumetric change, anisotropy and material properties are not inferred.
- 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
Inspect calibrated geometry, controlled design/material records and the complete process model. Use appropriate physical and biological assessment when evaluating a real construct, device or fabrication condition.
References
Similar or alternative tools
- Scaffold Compression Strain Point
Calculate compression-positive engineering strain from supplied heights.
- Scaffold Geometric Porosity Input
Calculate supplied scaffold void volume and geometric porosity.