Research Outline

Metal fatigue is the leading cause of mechanical failure. It occurs when a component is subjected to repetitive loading, leading to a reduction in strength with an increasing number of loading cycles. Traditionally, designers have posited that fatigue fracture is unlikely to occur if components withstand 10 million cycles. However, recent findings in high-strength materials, such as steel and titanium alloys, indicate that fatigue fractures can still occur beyond 10 million cycles from the material’s interior, so-called “internal fatigue fractures.” Consequently, traditional fatigue safety designs are no longer deemed reliable. Nonetheless, the behaviors of internal fatigue fractures are not yet fully understood due to the challenges associated with directly observing the interior of materials. My research is dedicated to elucidating internal fatigue fracture mechanisms, enhancing material design accordingly