Similar Materials

Find similar materials in terms of mechanical, thermal, or electrical properties.

1. Change the materials' view to a table view.
2. Select a material.
   Tip: You can search for reference material from the AMDC filters in the left navigation pane or use Clear All Filters to reset the database before selecting the reference specific material.
3. Click and then select a required similar material property profile.

   
   
   Figure 1. Select Similar Material Property Profile

   A list of materials that share similar mechanical properties is displayed. You will see the corresponding score values that indicate the degree of similarity between the reference material and the similar materials on the list.

   Material with a higher score have higher similarity to the reference material.

   
   
   Figure 2. Similar Alternate Materials Result with Score

   Property Profiles for Administrators: The following information describes the concept of Property Profiles for Administrators.

   Property Parameters:

   • Method: Specifies the decay method to be used (e.g., gauss, exp, linear)
   • Origin: The original value around which similarity is evaluated
   • Value: The value to be scored for similarity
   • Offset: Defines the range within which the decay function evaluates similarity
   • Scale: Determines the distance at which the computed score equals the decay parameter
   • Decay: Defines how input values are scored based on distance from the origin
   • Weight: Weight multiplier for the computed score

   General Parameters:

   • Floor: Specifies the minimum score threshold. Scores below this threshold are excluded
   • Total Score: Sum of scores divided by sum of weights

   Decay Functions:

   • DECAY_GAUSS(value, origin, scale, offset, decay) → score
   • DECAY_EXP(value, origin, scale, offset, decay) → score
   • DECAY_LINEAR(value, origin, scale, offset, decay) → score

   Scoring:

   • For each property available for the original material, a score is computed using the decay algorithm.
   • The score is multiplied by the weight assigned to that property.
   • If no value is available for a property, it scores 0.
   • All scores are summed and divided by the sum of weights.
   • The result is multiplied by 100 to obtain scores in the range of 0 to 100.

   Additional Notes:

   • If a property cannot be compared due to missing data, it is included with a score of 0.
   • If a property does not achieve a score of 1, the overall score will be 0 (knockout).

   For example, here is a similar list of material properties profiles used:

   Table 1. Similar List of Material Properties Profiles

   Mechanical Properties	Thermal Properties	Electrical Properties
   Tensile Modulus	Coefficient of linear thermal expansion, parallel	Relative Permittivity 100MHZ
   Yield Stress	Vicat softening temperature A	Relative Permittivity 1MHZ
   Yield Strain	Vicat softening temperature B	Dissipation Factor 100Hz
   Stress at break	Temp. of deflection under load	Dissipation Factor 60Hz
   Strain at break	Coefficient thermal expansion	Dissipation Factor 1MHz
   Charpy Impact strength	Transition temperature	Volume Resistivity
   Charpy Notched Impact Strength	Burning behavior	Surface Resistivity