EVALUATION OF THE CAPABILITY OF ULTRASONIC METHOD FOR MEASURING LONGITUDINAL WELDING RESIDUAL STRESS, BY VALIDATING WITH X-RAY DIFFRACTION METHOD

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EFTEKHARI MOHAMMAD; AHMADI NAJAFABADI MEHDI

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:9 Page(s): 1-10

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Title

EVALUATION OF THE CAPABILITY OF ULTRASONIC METHOD FOR MEASURING LONGITUDINAL WELDING RESIDUAL STRESS, BY VALIDATING WITH X-RAY DIFFRACTION METHOD

Author(s)

EFTEKHARI MOHAMMAD | AHMADI NAJAFABADI MEHDI | Issue Writer Certificate

Keywords

WELDING RESIDUAL STRESSQ1

ULTRASONIC METHODQ1

X-RAY DIFFRACTION METHODQ1

ALUMINUM ALLOY SERIES 5000Q1

Abstract

In recent years, measurement of residual stress by ULTRASONIC METHOD has developed because of its nondestructive nature, portable equipment and being cheap and fast. In this research, the Capability of ULTRASONIC METHOD by using longitudinal critically refracted or LCR wave in measurement of longitudinal WELDING RESIDUAL STRESS has been scrutinized. For this purpose, two plates of ALUMINUM ALLOY SERIES 5000 were joined by TIG welding method. Measurement of longitudinal residual stress by ULTRASONIC METHOD was done in closeness of surface via 5 MHz transducers based on acoustoelasticity theory. In order to create LCR wave and transmit it into specimen, an ultrasonic wedge was made based on Snell’s law. Also, a triaxial table was used to control the wedge movement and keep the pressure on it fixed. In order to calculate residual stress and increase in accuracy, acoustoelastic constant for each three welding zones, including weld metal, HAZ and base metal was obtained separately from uniaxle tension test. In order to validate ULTRASONIC METHOD results, measured longitudinal residual stress by X-RAY DIFFRACTION METHOD in 5 points on the specimen surface was used. Finally, after comparing the results of the two used methods with each other, good agreement was seen which indicates the good ability of ULTRASONIC METHOD in measurement of longitudinal residual stress.

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APA: Copy

EFTEKHARI, MOHAMMAD, & AHMADI NAJAFABADI, MEHDI. (2015). EVALUATION OF THE CAPABILITY OF ULTRASONIC METHOD FOR MEASURING LONGITUDINAL WELDING RESIDUAL STRESS, BY VALIDATING WITH X-RAY DIFFRACTION METHOD. MODARES MECHANICAL ENGINEERING, 15(9), 1-10. SID. https://sid.ir/paper/179025/en

Vancouver: Copy

EFTEKHARI MOHAMMAD, AHMADI NAJAFABADI MEHDI. EVALUATION OF THE CAPABILITY OF ULTRASONIC METHOD FOR MEASURING LONGITUDINAL WELDING RESIDUAL STRESS, BY VALIDATING WITH X-RAY DIFFRACTION METHOD. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(9):1-10. Available from: https://sid.ir/paper/179025/en

IEEE: Copy

MOHAMMAD EFTEKHARI, and MEHDI AHMADI NAJAFABADI, “EVALUATION OF THE CAPABILITY OF ULTRASONIC METHOD FOR MEASURING LONGITUDINAL WELDING RESIDUAL STRESS, BY VALIDATING WITH X-RAY DIFFRACTION METHOD,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 9, pp. 1–10, 2015, [Online]. Available: https://sid.ir/paper/179025/en

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