The Paris-Erdogan equation gives good results for long cracks when the material constants are known, but a large effort is required to determine them, since they are functions of many variables. R is an observable and where it appears in the model explicitly, the effort in determining the remaining material constants is much reduced.
حقوق النشر © 2024.CDM كل الحقوق محفوظة.خريطة الموقع