THEORETICAL AND EXPERIMENTAL INVESTIGATION OF NOTCH EFFECT ON FATIGUE LIFE OF CYLINDRICAL HSLA100 STEEL SPECIMENS IN ROTATING BENDING LOAD

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AMIRIAN JAVAD; SAFARI HESAM; SHIRANI MEHDI; Shabani Saeed

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Journal: Modares Mechanical Engineering Year:2016 | Volume:15 | Issue:12 Page(s): 113-120

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Title

THEORETICAL AND EXPERIMENTAL INVESTIGATION OF NOTCH EFFECT ON FATIGUE LIFE OF CYLINDRICAL HSLA100 STEEL SPECIMENS IN ROTATING BENDING LOAD

Author(s)

AMIRIAN JAVAD | SAFARI HESAM | SHIRANI MEHDI | Shabani Saeed | Issue Writer Certificate

Keywords

FATIGUEQ2

WEAKEST-LINK THEORYQ2

STRENGTH FACTORQ2

STEELQ2

HSLA100Q2

Abstract

This research investigates notch effect on FATIGUE life of HSLA100 STEEL which is widely applicable in the marine industry. Experimental tensile tests and rotating bending FATIGUE tests were performed on both smooth and notched cylindrical specimens and the corresponding mechanical properties and S-N curves were obtained. To better investigate the notch and also size effect on FATIGUE life of the specimens, two different notch geometries and specimen dimensions were used. To calculate the FATIGUE STRENGTH FACTOR, stress distribution under bending load is simulated for smooth and notched specimens. Then, the stress distribution under bending load is converted to stress distribution under rotating bending load using an in-house developed code. Finally, using an in-house developed code, the FATIGUE STRENGTH FACTOR of the specimens is calculated by weakest link theory. In order to better investigate the WEAKEST-LINK THEORY, in calculating the FATIGUE STRENGTH FACTOR, this factor is calculated using the classical methods and compared with experimental results. Finally, comparison of theoretical with experimental results shows that the WEAKEST-LINK THEORY gives better predictions than other classical methods and the results are closer to experimental ones. Also, WEAKEST-LINK THEORY uses the finite element results to predict notch effect. This facilitates the use of this theory in FATIGUE design of complicated specimens.

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APA: Copy

AMIRIAN, JAVAD, SAFARI, HESAM, SHIRANI, MEHDI, & Shabani, Saeed. (2016). THEORETICAL AND EXPERIMENTAL INVESTIGATION OF NOTCH EFFECT ON FATIGUE LIFE OF CYLINDRICAL HSLA100 STEEL SPECIMENS IN ROTATING BENDING LOAD. MODARES MECHANICAL ENGINEERING, 15(12), 113-120. SID. https://sid.ir/paper/179919/en

Vancouver: Copy

AMIRIAN JAVAD, SAFARI HESAM, SHIRANI MEHDI, Shabani Saeed. THEORETICAL AND EXPERIMENTAL INVESTIGATION OF NOTCH EFFECT ON FATIGUE LIFE OF CYLINDRICAL HSLA100 STEEL SPECIMENS IN ROTATING BENDING LOAD. MODARES MECHANICAL ENGINEERING[Internet]. 2016;15(12):113-120. Available from: https://sid.ir/paper/179919/en

IEEE: Copy

JAVAD AMIRIAN, HESAM SAFARI, MEHDI SHIRANI, and Saeed Shabani, “THEORETICAL AND EXPERIMENTAL INVESTIGATION OF NOTCH EFFECT ON FATIGUE LIFE OF CYLINDRICAL HSLA100 STEEL SPECIMENS IN ROTATING BENDING LOAD,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 12, pp. 113–120, 2016, [Online]. Available: https://sid.ir/paper/179919/en

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