Surface-Roughness Improvement
Calculate absolute and percentage surface-roughness improvement.
Description
Surface-roughness improvement compares before and after measurements on the same roughness convention.
Surface-roughness improvement compares before and after measurements on the same roughness convention. A negative result denotes worsening.1
Calculate absolute and percentage surface-roughness improvement.
When to use Surface-Roughness Improvement
Use this tool to calculate absolute and percentage surface-roughness improvement.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use Surface-Roughness Improvement and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter roughnessBefore, roughnessAfter using the field table and calculation rules, then run the tool.
- Read roughnessReduction, improvementPercent. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| roughnessBefore | Initial surface roughness (length) | number; minimum: 0 | Required |
| roughnessAfter | Final surface roughness (length) | number; minimum: 0 | Required |
Enter positive baseline roughness and nonnegative final roughness in matching units. Return signed absolute and percentage reduction.
reduction=before−after; improvement%=100 reduction/before Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| roughnessReduction | Absolute roughness reduction (length) | number |
| improvementPercent | Roughness improvement (%) | number |
{
"input": {
"roughnessBefore": 10,
"roughnessAfter": 2
},
"output": {
"roughnessReduction": 8,
"improvementPercent": 80
}
}Limitations and assumptions
No roughness measurement, parameter conversion or surface-quality acceptance criterion is supplied.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Peening Fatigue Gain: Quantify measured fatigue-life improvement after laser shock peening. For a complementary task, use Contact-Angle Classifier: Classify a measured contact angle using caller-supplied wetting thresholds.
References
-
Surface-Roughness Improvement — tool.io
Similar or alternative tools
- Peening Fatigue Gain
Quantify measured fatigue-life improvement after laser shock peening.
- Contact-Angle Classifier
Classify a measured contact angle using caller-supplied wetting thresholds.