Investigation of the Effect of Ferrite Grain Size on Acoustic Emission Signals
محورهای موضوعی : Manufacturing process monitoring and control
Mehdi Khosravi
1
(Department of Mechanical Engineering, University of Zanjan, Zanjan, Iran)
Ramin Khamedi
2
(Department of Mechanical Engineering, University of Zanjan, Zanjan, Iran)
کلید واژه: Acoustic Emission, Ferrite Grain Size, Sentry Function, Frequency Distribution,
چکیده مقاله :
In this study, the effect of ferrite grain size on mechanical properties and failure micro-mechanisms of materials was investigated by using acoustic emission (AE) non-destructive testing (NDT). AE signals were obtained from tensile tests of fully annealed ferrite samples and the effective AE parameters for each sample were analyzed from the AE waveforms. Due to annealing, the ferrite grain size was different in each sample, which affected the AE signals, and to analyze the AE signals, the Sentry Function (SF) and Fast Fourier Transform (FFT) were used and the results show that performing a full annealing operation to change the grain size at different temperatures almost did not significantly affect the frequency parameter, which has a range of about 175 kHz. In addition, the amplitude was about 30-40 dB, which indicates the deformation of the ferrite, and also the amount of AE energy released during the tensile test was lower than the strain energy.
[1] Afsari, A., Fazel, D., Karimisharifabadi, J. and Mehrabi, V. 2020. Study the Percentage of Carbon and Ferrite in Layers of Steel (SA-516) by Strip Cladding with E316L. Journal of Modern Processes in Manufacturing and Production. 9(3):41-50.
[2] Salari, M. 2019. Texture Evolution in Low Carbon Steel Fabricated by Multi-directional Forging of the Martensite Starting Structuree. Journal of Modern Processes in Manufacturing and Production. 8(4):5-15.
[3] Jemielniak, K. 2000. Some aspects of AE application in tool condition monitoring. Ultrasonics. 38(1-8):604-608.
[4] Baram, J. and Rosen, M. 1981. Effect of grain size on the acoustic emission generated during plastic deformation of copper. Materials Science and Engineering. 47(3): 243-246.
[5] Baram, J. and Rosen, M. 1980. Effect of grain size on the acoustic emission generated during the plastic deformation of aluminum. Materials Science and Engineering. 45(3):255-262.
[6] Bayram, A., Uǧuz, A., and Ula, M. 1999. Effects of microstructure and notches on the mechanical properties of dual-phase steels. Materials characterization. 43(4):259-269.
[7] Durand, L. P. 2008. Composite Materials Research Progress. Nova Science Pub Inc.
[8] Dieter, G. E. 1988. Mechanical Metallurgy. Mc Graw-Hill Book Co., New York.
[9] Alinia, S., Khamedi, R. and Ahmadi, I. 2018. The investigation and optimization of process parameters in warm deep drawing of ASS304 steel using Box Behnken design and applying temperature gradient. Experimental Techniques. 42(6):645-657.
[10] Landy, R. J. 1979. Acoustic Emission Behaviour of a Low Alloy Steel. The University of California Los Angeles Deptment of Materials Engineering. MSc.Thesis.
[11] Wu, M. 1992. An investigation of the acoustic emission generated from silicon particles in aluminum-silicon alloys. University of Denver.
[12] Rad, V. F., Khamedi, R., and Moradi, A. R. 2019. The effect of martensite volume fraction on topography of dual phase steels. Materials Letters. 239:21-23.
[13] Heiple, C. R., & Carpenter, S. H. 1987. Acoustic emission produced by deformation of metals and alloys-A review. Journal of Acoustic Emission. 6:177-204.
[14] Long, Q. Y. and Huazi, Y. 1990. Acoustic emission during deformation of dual-phase steels. Metallurgical Transactions A. 21(1):373-379.
[15] JH, H. and DM, L. 1999. Acoustic emission behavior during tensile tests of low carbon steel welds. ISIJ international. 39(4):365-370.
[16] Huh, J. H., Lee, K. A. and Lee, C. S. 1997. Acoustic emission behavior during tensile deformation of welded steel joints. 45(29): 645-653.
