Question 22Gas Turbine - 1st Asst/Chief

The correct answer is B) Radial cracking. Radial cracking is the correct metallurgical failure represented by Item A in the illustration GT-0014. Radial cracking occurs when a material, such as a metal component, experiences tensile stresses perpendicular to the surface, leading to the formation of cracks radiating outward from a central point or region. This type of failure is commonly observed in materials subjected to cyclic loading or fatigue conditions. The other answer choices are incorrect because: A) Rupture refers to a complete separation of the material, B) Creep is a time-dependent deformation under sustained stress, and D) Axial cracking would involve cracks parallel to the primary axis of the component.