Question 17Gas Turbine - 1st Asst/Chief

The correct answer is B) Axial cracking. Axial cracking refers to cracks that run parallel to the length or axis of the component. This type of failure is commonly seen in materials under tensile or bending stresses. The illustration GT-0014 appears to show a component with cracks running lengthwise, which is indicative of axial cracking. The other answer choices are incorrect because: A) Circumferential cracking occurs perpendicular to the length of the component, C) Weld cracking is specific to the heat-affected zone of a weld, and D) Radial cracking runs outward from the center of a component, which is not consistent with the illustration.