AN INVESTIGATION OF THE EFFECT OF MICROSTRUCTURE ON DETERMINATION OF ACOUSTOELASTIC CONSTANTS IN AUSTENITIC STAINLESS STEEL WELDING

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RAHIMI IMAN; NEJADSHAMSI SHAYAN; GHASIMAKBARI FARZAM; AHMADI NAJAFABADI MEHDI

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:5 Page(s): 1-9

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Title

AN INVESTIGATION OF THE EFFECT OF MICROSTRUCTURE ON DETERMINATION OF ACOUSTOELASTIC CONSTANTS IN AUSTENITIC STAINLESS STEEL WELDING

Author(s)

RAHIMI IMAN | NEJADSHAMSI SHAYAN | GHASIMAKBARI FARZAM | AHMADI NAJAFABADI MEHDI | Issue Writer Certificate

Keywords

ACOUSTOELASTIC COEFFICIENTQ1

HAZQ1

AUSTENITIC STAINLESS STEELQ2

LCR WAVESQ1

HOLE-DRILLING STRAIN-GAGEQ1

Abstract

Residual stress measurement of in-service parts of a system is practically impossible by means of destructive methods. Therefore, the use of ultrasonic method as a non-destructive method has an important role. One of the problems in non-destructive measurement of residual stresses by means of ultrasonic waves is determination of acoustoelastic constants. In fact, for conversion of ultrasonic method data to stress state, it is necessary that these coefficients be determined very precisely. But for reasons like HAZ inclination and small width of this zone, determination of coefficient of this zone does not perform accurately. In this study, the practical simulation is performed for determination of ACOUSTOELASTIC COEFFICIENT of HAZ. For this simulation, the heat affected zone is divided to four separate zones and then the microstructure of those four zones has been simulated on standard tensile test specimen by different heat treatment cycles. This coefficient has been used in evaluation of welding residual stresses of AUSTENITIC STAINLESS STEEL by LCR Ultrasonic waves and the results compared with the HOLE-DRILLING STRAIN-GAGE method. By comparison of stress values achieved by HAZ simulation method, the conventional method and HOLE-DRILLING STRAIN-GAGE method, it is seen that the HAZ simulation method causes an improvement in welding residual stress measurement accuracy.

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APA: Copy

RAHIMI, IMAN, NEJADSHAMSI, SHAYAN, GHASIMAKBARI, FARZAM, & AHMADI NAJAFABADI, MEHDI. (2016). AN INVESTIGATION OF THE EFFECT OF MICROSTRUCTURE ON DETERMINATION OF ACOUSTOELASTIC CONSTANTS IN AUSTENITIC STAINLESS STEEL WELDING. MODARES MECHANICAL ENGINEERING, 16(5), 1-9. SID. https://sid.ir/paper/177915/en

Vancouver: Copy

RAHIMI IMAN, NEJADSHAMSI SHAYAN, GHASIMAKBARI FARZAM, AHMADI NAJAFABADI MEHDI. AN INVESTIGATION OF THE EFFECT OF MICROSTRUCTURE ON DETERMINATION OF ACOUSTOELASTIC CONSTANTS IN AUSTENITIC STAINLESS STEEL WELDING. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(5):1-9. Available from: https://sid.ir/paper/177915/en

IEEE: Copy

IMAN RAHIMI, SHAYAN NEJADSHAMSI, FARZAM GHASIMAKBARI, and MEHDI AHMADI NAJAFABADI, “AN INVESTIGATION OF THE EFFECT OF MICROSTRUCTURE ON DETERMINATION OF ACOUSTOELASTIC CONSTANTS IN AUSTENITIC STAINLESS STEEL WELDING,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 5, pp. 1–9, 2016, [Online]. Available: https://sid.ir/paper/177915/en

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