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In the present investigation, fatigue crack growth threshold of the base metal, heat affected zone (HAZ), and weld metal of a steam turbine rotor’s welded joint constituents were determined by performing fatigue crack growth rate (FCGR) tests. Two types of test specimens were considered: (1) single-edge notch bend (SENB) and (2) compact tension (CT). Although a CT specimen is more appropriate for...
A new physical head model with air bubble to simulate the brain injury in head decelerating impact is presented in this paper. This new method has its advantage on investigating the brain injury using a direct and visual technique. A hollow transparent glass model was used to simulate the skull, and a transparent gel was used to substitute the brain tissue. Three air bubbles were created in the gel...
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