The linear portion of the stress-strain diagram of a metal is known as the Irrev

Question

The linear portion of the stress-strain diagram of a metal is known as the Irreversible range Elastic range Scant modulus Modulus of elasticity Fatigue failure it the phenomenon in which materials break catastrophically under fluctuating stress loading which is below the Y.S. and T.S. The plot of stress(S) versus number of cycles (N) to failure is used to study the phenomenon. The following is true except: For ferrous alloys, the S-N curve become horizontal at higher N values Below the fatigue limit, fatigue failure will not happen Al does not have a fatigue limit in that the S-N curve continues its downwards trend with increasing greater N values the cyclic loading has to be sinusoidal

Explanation / Answer

Question 3. b statement is not true.

Means in some scnerio,below the fatigue limit,fatigue failure will happen.

structural metals such as aluminium and copper, do not have a distinct limit and will eventually fail even from small stress amplitudes

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.