GMS 401 Chapter Notes - Chapter 5S: Exponentiation
28 Jun 2018
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GMS – Chapter 5S – Learning Curves
The learning effect: The rate of decrease in unit time remains constant as the number of units
produced doubles (the improvement curve)
Major changes that are made once production is underway can cause a temporary increase in
time per unit until workers adjust to the change
Every doubling of units produced results in a constant percentage decrease in time per unit
Determining unit times formula – approach 1
Tn = T1 x nb
Tn – time for the nth unit, T1 – time for the first unit, b = [ln(learning percentage / 100)]/ln(2)
Use a learning factor from table – approach 2
Tn = T1 x unit time factor
SUM Tn = T1 x total time factor
Determine learning percentage
Y=Tn, a=T1, x=n
Power function y = axb
b = [ln(learning percentage / 100)]/ln(2)
learning percentage = 100 x 2b
learning curves have useful application in a number of management activities like labour
planning and scheduling, negotiated selling/purchasing, and assessing labour training needs
and performance
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Document Summary
The learning effect: the rate of decrease in unit time remains constant as the number of units produced doubles (the improvement curve) Major changes that are made once production is underway can cause a temporary increase in time per unit until workers adjust to the change. Every doubling of units produced results in a constant percentage decrease in time per unit. Tn time for the nth unit, t1 time for the first unit, b = [ln(learning percentage / 100)]/ln(2) Use a learning factor from table approach 2. Sum tn = t1 x total time factor.
