Development of detection technique for fatigue crack due to thermal stratification phenomena in RCS piping
Abstract
Area highly vulnerable to crack generation has been chosen by calculating the stress and deformation using computer program ANSYS considering thermal stratification phenomena, and for weld area, stress distribution has been investigated in order to perform the intensive ISI. The manufacturing of specimens with inside natural cracks has been done and basic procedure to manufacture mechanical fatigue crack by implanting fatigue cracked specimen into parent metal has been set up. This is a distribution that meets the requirement of ASME code Sec.XI, App.VII and VIII (1989 edition).
- Publication:
-
Unknown
- Pub Date:
- January 1993
- Bibcode:
- 1993ddtf.rept.....L
- Keywords:
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- Cracks;
- Pipes (Tubes);
- Stress Analysis;
- Stress Distribution;
- Temperature Gradients;
- Thermal Fatigue;
- Austenitic Stainless Steels;
- Metal Fatigue;
- Nondestructive Tests;
- Stratification;
- Ultrasonic Flaw Detection;
- Structural Mechanics