i want to know about the relationship between fatigue strength and tensile strength for thermoplastics especially PPSU (POLYPHENYLSULPHONE)@23 DEG.
The tensile strength of a material is how it resists tension and the difference between yield and failure.
The fatigue resistance is its behavior under cyclic loading which is more complicated, the amount of load and frequency makes a difference. The study of cyclic loading is “relatively” recent due to some airplanes failing due to cyclic loading.
There are text books covering this in detail.