Gerber Parabola Gerber parabola refers to the parabolic line joining two points in x axis (S ut) and y axis (S e). The x-axis is stress amplitude and y axis is mean stress. Draw the diagram for Gerber line, Goodman line, and Soderberg line as below. From above figure there are some failure points just above the Gerber parabola line.
The name Mathias is of German origin. The meaning of Mathias is gift of G-d. Mathias is generally used as a boy's name. It consists of 7 letters and 3 syllables and is pronounced Ma-thi-as.
The name Felicia derives from the Latin adjective felix, meaning happy, though in the neuter plural form felicia it literally means happy things and often occurred in the phrase tempora felicia, happy times. The sense of it as a feminine personal name appeared in post-Classical use and is of uncertain origin.