천연가스 수송용 API 5L X65 배관의 인장과 파괴인성에 대한 전변형의 영향

다국어 초록 (Multilingual Abstract)

Pipelines for natural gas transmission may be required high resistance for plastic deformation to reduce mechanical damage caused by outside force such as ground movement. Tensile test and crack tip opening displacement test were conducted on API 5L X65 pipeline to investigate the mechanical properties of pipeline subjected to plastic deformation. Uniaxial tensile prestrain up to approximately 10% was applied to plae0type tensile specimens cut from API 5L X65 pipeline prior to mechanical testing. Tensile test revealed that yield strength and tensile strength was increased with increasing tensile prestrain. However, CTOD values and Charpy impact energy for crack initiation decreased with increasing tensile prestrain.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험방법
• 3. 실험결과 및 고찰
• 4. 결론
• 참고문헌