sigmats=141,000 psi
Specimen broke under low cycle fatigue.
Click for larger image Although hard to see, in the box are fatigue striations. Below is the enlargement of the inset. (Bhattacharyya, 130-7)
Nickel Based Alloy
sigmats=141,000 psi
Specimen broke under low cycle fatigue.
Click for larger image
Although hard to see, in the box are fatigue striations. Below
is the enlargement of the inset. (Bhattacharyya, 130-7)
Click for larger image
Notice the white lines followed by dark bands. Individually they
are called fatigue striations. (Bhattacharyya, 130-8)
Click for larger image
These striations are more jagged than the above examples. (Bhattacharyya,
130-11)
Titanium Alloy
sigmats=153,000 psi
Specimen broke under high cycle fatigue.
Click for larger image
Notice the distinct well-defined striations. (Bhattacharyya,
137-13)
Submitted by Ron Halahan
Virginia Tech Materials Science and Engineering
http://www.eng.vt.edu/eng/materials/classes/MSE2094_NoteBook/97ClassProj/exper/halahan/www/fatigue.html
Last updated: 4/25/97