Thermal Shock Sensitivity Checker

Screen caller measured temperature contrast with a fully constrained isotropic thermoelastic stress proxy and caller strength limit; geometry, anisotropy, defects and transient heat transfer omitted, no safe heating/cleaning advice.

Description

Thermal expansion under ideal full constraint can create a stress proxy.

Thermal expansion under ideal full constraint can create a stress proxy. Real gemstone geometry, anisotropy and flaws require more than a scalar temperature contrast.^[1]

When to use Thermal Shock Sensitivity Checker

Use this tool to screen caller measured temperature contrast with a fully constrained isotropic thermoelastic stress proxy and caller strength limit; geometry, anisotropy, defects and transient heat transfer omitted, no safe heating/cleaning advice.

Prepare the gemstone measurements, spectra or comparison data and any supplied calibration parameters. Check units, reference conditions and record alignment.

How to use Thermal Shock Sensitivity Checker and understand its results

Prepare the gemstone measurements, spectra or comparison data and any supplied calibration parameters. Check units, reference conditions and record alignment.
Enter youngModulusPa, linearExpansionPerK, poissonRatio, measuredSurfaceCoreTemperatureDifferenceK, callerTensileStressLimitPa using the field table and calculation rules, then run the tool.
Read fullyConstrainedThermalStressProxyPa, aboveCallerThermalStressLimit. 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
youngModulusPa	Young modulus Pa	number	Required
linearExpansionPerK	Linear expansion per k	number	Required
poissonRatio	Poisson ratio	number	Required
measuredSurfaceCoreTemperatureDifferenceK	Measured surface core temperature difference k	number	Required
callerTensileStressLimitPa	Caller tensile stress limit Pa	number	Required

Use positive modulus and caller tensile limit, nonnegative expansion coefficient, a signed Kelvin temperature difference and Poisson ratio strictly in (−1,0.5). Return the magnitude proxy and flag only stress strictly above the limit.

stress proxy=Young modulus × expansion coefficient × |surface-core ΔT|/(1−Poisson ratio)

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
fullyConstrainedThermalStressProxyPa	Fully constrained thermal stress proxy Pa	number
aboveCallerThermalStressLimit	Above caller thermal stress limit	boolean

json

{
  "input": {
    "youngModulusPa": 1000,
    "linearExpansionPerK": 0.01,
    "poissonRatio": 0.25,
    "measuredSurfaceCoreTemperatureDifferenceK": 10,
    "callerTensileStressLimitPa": 100
  },
  "output": {
    "fullyConstrainedThermalStressProxyPa": 133.33333333333334,
    "aboveCallerThermalStressLimit": true
  }
}

Limitations and assumptions

This fully constrained isotropic screen excludes transient heat transfer and defects. It does not predict fracture or establish safe heating conditions.

Numeric inputs and returned numeric values must be finite; an unrepresentable returned value produces an error. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.

Alternative or Complementary methods

Use Cleavage Direction Risk Checker: Resolve signed normal traction on independently measured cleavage planes under caller applied stress/tensile limit; compressive traction remains negative and this idealized screen does not predict fracture or handling safety. For a complementary task, use Parting Plane Warning Checker: Compare measured parting-plane normals to declared cut-plane normal with sign-invariant acute angles; parallelism warning is geometry only, not cleavage probability or safe cutting advice.

References

Thermal Shock Sensitivity Checker — tool.io

Similar or alternative tools

Cleavage Direction Risk Checker
Resolve signed normal traction on independently measured cleavage planes under caller applied stress/tensile limit; compressive traction remains negative and this idealized screen does not predict fracture or handling safety.
Parting Plane Warning Checker
Compare measured parting-plane normals to declared cut-plane normal with sign-invariant acute angles; parallelism warning is geometry only, not cleavage probability or safe cutting advice.