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2. Goodman relation - Wikipedia

   en.wikipedia.org/wiki/Goodman_relation

   Within the branch of materials science known as material failure theory, the Goodman relation (also called a Goodman diagram, a Goodman-Haigh diagram, a Haigh diagram or a Haigh-Soderberg diagram) is an equation used to quantify the interaction of mean and alternating stresses on the fatigue life of a material. [1]

3. Fatigue limit - Wikipedia

   en.wikipedia.org/wiki/Fatigue_limit

   The fatigue limit or endurance limit is the stress level below which an infinite number of loading cycles can be applied to a material without causing fatigue failure. [1] Some metals such as ferrous alloys and titanium alloys have a distinct limit, [ 2 ] whereas others such as aluminium and copper do not and will eventually fail even from ...

4. Fatigue (material) - Wikipedia

   en.wikipedia.org/wiki/Fatigue_(material)

   A constant fatigue life (CFL) diagram [34] is useful for the study of stress ratio effect. The Goodman line is a method used to estimate the influence of the mean stress on the fatigue strength. A Constant Fatigue Life (CFL) diagram is useful for stress ratio effect on S-N curve. [35]

5. Rainflow-counting algorithm - Wikipedia

   en.wikipedia.org/wiki/Rainflow-counting_algorithm

   Rainflow counting identifies the closed cycles in a stress-strain curve. The rainflow-counting algorithm is used in calculating the fatigue life of a component in order to convert a loading sequence of varying stress into a set of constant amplitude stress reversals with equivalent fatigue damage.

6. Crack growth equation - Wikipedia

   en.wikipedia.org/wiki/Crack_growth_equation

   A crack growth equation is used for calculating the size of a fatigue crack growing from cyclic loads. The growth of a fatigue crack can result in catastrophic failure, particularly in the case of aircraft. When many growing fatigue cracks interact with one another it is known as widespread fatigue damage. A crack growth equation can be used to ...

7. ‘I Thought I Had Chronic Fatigue. Then, Doctors Said I Had 90 ...

   www.aol.com/thought-had-chronic-fatigue-then...

   He then explained that it was caused by autoimmune hepatitis, a chronic liver disease when the body’s immune system attacks the liver cells. The rare condition affects between four and 43 out of ...

8. AOL Mail for Verizon Customers - AOL Help

   help.aol.com/products/aol-mail-verizon

   AOL Mail welcomes Verizon customers to our safe and delightful email experience!

9. Basquin's law - Wikipedia

   en.wikipedia.org/wiki/Basquin's_law

   Basquin's law of fatigue states that the lifetime of the system has a power-law dependence on the external load amplitude, , where the exponent has a strong material dependence. [1] It is useful in expressing S-N relationships .