Reliability_Factor
Reliability_Factor(R)
Function Reliability_Factor returns the reliability modification factor (The Marin factor k_e). This function is meant to modify the endurance limit in order to account for scatter in the data and provide a confidence limit. The modification factor is based on a standard deviation of 8%. The unmodified value corresponds to a 50% reliability.
Input:
R = Reliabliity [%]
Output:
Returns the dimensionless reliability modification factor.
Example:
$Load Mechanical Design
k_e=reliability_factor(99.9 [%])
{Solution:
k_e = 0.7528}
Reference: Budynas, R.G. and J. Keith Nisbett, Shigley's Mechanical Engineering Design, 11th Edition, McGraw Hill, New York, (2020).