A hole is drilled at the wrong place on a beam web subject to high cycle fatigue in a non-corrosive environment. Assume that the hole is far away from any end connection and has a theoretical stress concentration factor that give a notch fatigue factor of 1.4. Which of the following actions will yield the highest fatigue strength:

irror polished notched steel specimen operating in a non-corrosive environment has the following points (indicated as (Sa; N), where Sa is in MPa) on the S-N curve: (700; 103) - strength at 1 000 cycles. (250; 106) - endurance limit. In which of the following intervals is the endurance at a completely reversed rotating bending stress range of 220 MPa for 50 % probability of survival: A. [1.5 × 106 ; 2.0 × 106) B. [2.0 × 106 ; 2.5 × 106) C. [2.5 × 106 ; 3.0 × 106) D. ≥ 3.0 × 106 E. < 1.5 × 106

Fatigue is estimated to cause 90% of all failures of metallic structures. Give three typicalexamples of components that suffer from fatigue

Fatigue is estimated to cause 90% of all failures of metallic structures. Give three typicalexamples of components that suffer from fatigue.

A wide Titanium (Ti-6Al-4V) alloy plate has a notch on one edge from an over cut during a sawing operation. This crack geometry results in a Y value of 1.32. The plate is to be loaded in tension perpendicular to the notch. If the notch is 0.15" deep, what is the maximum safe service stress?

What is the maximum stress a material can support without breaking, often reached at the point of necking?*Choose