Calculate the Weibull parameters based on your data set - HxGN EAM - 11.07.01 - Feature Briefs - Hexagon

HxGN EAM Reliability Analysis

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HxGN EAM
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Feature Briefs
HxGN EAM Version
11.7.1

Calculate the "Median ranking" using this formula Benard’s formula

Time to failure

Sequence / Order

No

Median Rank

16

1

6

0.109

34

2

6

0.265

53

3

6

0.421

75

4

6

0.578

93

5

6

0.734

120

6

6

0.890

After calculating the median ranking, you can now place the points on the x and y-axis as follows:

  • X axis =

  • Y axis =

x

y

x*y

1

2.772589

-2.155616

-5.97664

2

3.526361

-1.1752704

-4.14443

3

3.970292

-0.6015436

-2.3883

4

4.317488

-0.147287

-0.63591

5

4.532599

0.2819178

1.27782

6

4.787492

0.79433683

3.802881

Σ

23.90682

-3.0034624

-8.06458

The slope of the line (β) is based on linear regression using the least square method:

The intercept with the y-axis can now be determined as follows:

Scale parameter η therefore =