![Jun Liu](https://profiles-cardiff.imgix.net/attachments/3893?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Trosolwyg
Mae Dr Jun Liu yn Ddarlithydd ac yn aelod academaidd o Grwpiau Ymchwil Magneteg a Deunyddiau yn Ysgol Peirianneg Prifysgol Caerdydd. Gyda sylfaen gref yng nghywreinrwydd meteleg a deunyddiau magnetig, mae Dr. Jun Liu wedi datblygu portffolio ymchwil cynhwysfawr sy'n archwilio'n fanwl y gydberthynas rhwng microstructures a phriodweddau magnetig deunyddiau magnetig meddal.
Diddordebau Ymchwil:
Mae ymchwil Dr. Jun Liu wedi'i hangori mewn diddordeb dwfn mewn dadorchuddio'r perthnasoedd cymhleth rhwng microstructures a phriodweddau magnetig deunyddiau magnetig. Mae hyn yn cynnwys sbectrwm o feysydd arbenigol, gan gynnwys:
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Gwerthusiad annistrywiol o Microstrwythurau: Defnyddio technegau electromagnetig a magnetig datblygedig i asesu microstructures duroedd yn arloesol heb achosi unrhyw ddifrod neu newid materol.
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Modelu Magnetig Microstrwythurol: Cymryd rhan mewn modelu blaengar i ddadansoddi a rhagfynegi'r priodweddau magnetig a ddylanwadir gan amrywiol ficrostrwythurau.
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Microstructure a Chymeriad Eiddo Magnetig: Cynnal cymeriadu trylwyr i ddeall yn ddwfn y dylanwadau cydfuddiannol rhwng microstructures ac eiddo magnetig.
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Modelu Elfen Cyfyngedig Systemau Synhwyrydd Electromagnetig: Defnyddio dulliau modelu elfennau cyfyngedig soffistigedig i ddatblygu a gwneud y gorau o systemau synhwyrydd electromagnetig, gan wella eu perfformiad a'u dibynadwyedd.
Cyhoeddiad
2025
- Liu, J., Davis, C., Yue, S., Jolfaei, M. A., Shen, J. and Li, Y. 2025. Scalar permeability microstructure model considering crystallographic texture and grain size for magnetic evaluation of anisotropy in steel. Acta Materialia 289, article number: 120863. (10.1016/j.actamat.2025.120863)
- Yue, S., Yin, J., Li, Y., Dou, Y., Chen, R. and Liu, J. 2025. A modified fixed-point iteration algorithm for magnetic field computation with hysteresis models. IEEE Transactions on Magnetics 61(1), article number: 7400104. (10.1109/TMAG.2024.3490895)
2024
- Li, Y., Li, Y., Lin, Z., Yue, S., Chen, R., Guo, P. and Liu, J. 2024. A hysteresis model for soft magnetic composites considering particle size distribution. IEEE Transactions on Magnetics 60(12), article number: 7301405. (10.1109/TMAG.2024.3458798)
- Li, Y., Li, Y., Yue, S., Chen, R., Lin, Z. and Liu, J. 2024. An anisotropic hysteresis model considering microstructural feature. Presented at: 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC), Jeju, Korea, 02-05 June 2024Proceedings 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC). IEEE, (10.1109/CEFC61729.2024.10585668)
- Yue, S., Yin, J., Li, Y., Dou, Y., Chen, R. and Liu, J. 2024. A modified fixed-point iteration algorithm for magnetic field computation with hysteresis models. Presented at: 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC), Jeju, Korea, 02-05 June 2024Proceedings 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC). IEEE, (10.1109/CEFC61729.2024.10586156)
- Yue, S., Liu, J., Li, Y. and Liu, G. 2024. Finite element modelling of the magnetic property behaviours of electrical steels in rotating fields considering their crystallographic textures. Materialia, article number: 102138. (10.1016/j.mtla.2024.102138)
- Liu, J. 2024. EBSDPolygonizer: Enabling realistic microstructural modelling. SoftwareX 25, article number: 101622. (10.1016/j.softx.2023.101622)
2023
- Aghadavoudi Jolfaei, M., Liu, J., van den Berg, F. and Davis, C. 2023. Measurement and modelling magnetic anisotropy due to crystallographic texture in interstitial free (IF) steels. In: Bilicz, S., Gyimothy, S. and Vertesy, G. eds. Electromagnetic Non-Destructive Evaluation (XXIV)., Vol. 46. Studies in Applied Electromagnetics and Mechanics IOS Press, pp. 17-23., (10.3233/SAEM230004)
- Aghadavoudi Jolfaei, M., Liu, J., Zhou, L. F., Van Den Berg, F. and Davis, C. 2023. Non-destructive evaluation of magnetic anisotropy associated with crystallographic texture of interstitial free steels. Journal of Magnetism and Magnetic Materials 568, article number: 170374. (10.1016/j.jmmm.2023.170374)
2022
- Aghadavoudi Jolfaei, M., Liu, J., Zhou, L., Van Den Berg, F. and Davis, C. L. 2022. Non-destructive evaluation of magnetic anisotropy associated with crystallographic texture of interstitial free steels using an electromagnetic sensor. [Online]. SSRN: Elsevier. (10.2139/ssrn.4267904) Available at: http://dx.doi.org/10.2139/ssrn.4267904
2021
- Liu, J. and Davis, C. 2021. Tensorial permeability microstructure model considering crystallographic texture and grain size for evaluation of magnetic anisotropy In polycrystalline steels. Philosophical Magazine 101(10), pp. 1224-1244. (10.1080/14786435.2021.1892229)
2019
- Liu, J., Wilson, J., Davis, C. L. and Peyton, A. 2019. Magnetic characterisation of grain size and precipitate distribution by major and minor BH loop measurements. Journal of Magnetism and Magnetic Materials 481, pp. 55-67. (10.1016/j.jmmm.2019.02.088)
2017
- Liu, J., Wilson, J., Davis, C. and Peyton, A. 2017. Optimized setup and protocol for magnetic domain imaging with in situ hysteresis measurement. Journal of Visualized Experiments 2017(129), article number: e56376. (10.3791/56376)
2016
- Liu, J., Wilson, J., Strangwood, M., Davis, C. L. and Peyton, A. 2016. Magnetic characterisation of microstructural feature distribution in P9 and T22 steels by major and minor BH loop measurements. Journal of Magnetism and Magnetic Materials 401, pp. 579-592. (10.1016/j.jmmm.2015.10.075)
- Liu, J. and Davis, C. 2016. A hysteresis model considering microstructural feature distribution. Presented at: 42nd Annual Review of Progress in Quantitative Nondestriuctive Evaluation, Minneapolis, MN, USA, 26-31 July 2015 Presented at Chimenti, D. E. and Bond, L. J. eds., Vol. 1706. Vol. 1. AIP Publishing pp. 90018., (10.1063/1.4940555)
- Liu, J., Wilson, J., Davis, C. and Peyton, A. 2016. Evaluation of precipitate and grain size distribution in steels by magnetic hysteresis measurement and modelling. Presented at: 55th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016), Nottingham, England, 12-14 September 2016Proceedings of 55th Annual British Conference of Non-Destructive Testing - NDT 2016. British Institute of Non-Destructive Testing ( BINDT )
- Wilson, J. W., Karimian, N., Peyton, A. J., Davis, C. and Liu, J. 2016. Development of a tool for the magnetic assessment of microstructural changes in Grade 91 power station steel tubes. Presented at: 55th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016), Nottingham, England, 12-14 September 201655th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016). British Institute of Non-Destructive Testing ( BINDT ) pp. 72-79.
2015
- Liu, J., Wilson, J., Strangwood, M., Davis, C. L., Peyton, A. and Parker, J. 2015. Electromagnetic evaluation of the microstructure of grade 91 tubes/pipes. International Journal of Pressure Vessels and Piping 132-13, pp. 65-71. (10.1016/j.ijpvp.2015.05.009)
2014
- Zhou, L., Liu, J., Hao, X. J., Strangwod, M., Peyton, A. J. and Davis, C. L. 2014. Quantification of the phase fraction in steel using an electromagnetic sensor. NDT and E International 67, pp. 31-35. (10.1016/j.ndteint.2014.06.007)
- Liu, J., Strangwood, M., Davis, C. L. and Parker, J. 2014. Non-destructive characterisation of N/Al level in P91 steels using electromagnetic sensors. Materials Science and Technology 31(9), pp. 1042-1050. (10.1179/1743284714Y.0000000642)
- Wilson, J. W., Karimian, N., Liu, J., Yin, W., Davis, C. L. and Peyton, A. J. 2014. Measurement of the magnetic properties of P9 and T22 steel taken from service in power station. Journal of Magnetism and Magnetic Materials 360, pp. 52-58. (10.1016/j.jmmm.2014.01.057)
- Karimian, N., Wilson, J. W., Peyton, A. J., Yin, W., Liu, J. and Davis, C. L. 2014. Differential permeability behaviour of P9 and T22 power station Steels. Journal of Magnetism and Magnetic Materials 352(1), pp. 81-90. (10.1016/j.jmmm.2013.09.059)
- Wilson, J. W., Karimian, N., Peyton, A. ., Liu, J., Kahlon, N. S. and Davis, C. L. 2014. Incremental permeability and magnetic Barkhausen noise for the assessment of microstructural changes in Grade 91 power station tubes. Presented at: 53rd Annual Conference of the British Institute of Non-Destructive Testing (NDT 2014), Manchester, England, 9-11 September 201453rd Annual Conference of the British Institute of Non-Destructive Testing (NDT 2014). British Institute of Non-Destructive Testing ( BINDT )
2013
- Liu, J., Strangwood, M., Davis, C. L. and Peyton, A. J. 2013. Magnetic evaluation of microstructure changes in 9Cr-1Mo and 2.25Cr-1Mo steels using electromagnetic sensors. Metallurgical and Materials Transactions A 44(13), pp. 5897-5909. (10.1007/s11661-013-1938-x)
- Karimian, N., Yin, W., Liu, J., Hao, X. J., Strangwood, M., Davis, C. L. and Peyton, A. J. 2013. Non-contact EM measurement of the properties of power station steels taken from service. Presented at: 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Minneapolis, MN, USA, 6-9 May 20132013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE pp. 1573-1578., (10.1109/I2MTC.2013.6555679)
- Karimian, N., Wilson, J. W., Yin, W., Liu, J., Davis, C. L. and Peyton, A. J. 2013. Magnetic sensing for microstructural assessment of power station steels: differential permeability and magnetic hysteresis. Presented at: 17th Sensors and Their Applications Conference, Dubrovnik, Croatia, 16-18 September 2013, Vol. 450. IOP Publishing: Conference Series, (10.1088/1742-6596/450/1/012042)
- Liu, J., Liu, C. and Conway, P. P. 2013. Kinetic Monte Carlo simulation of the electrodeposition of polycrystalline copper: Effects of substrates and deposition parameters on the microstructure of deposits. Electrochimica Acta 97, pp. 132-142. (10.1016/j.electacta.2013.02.112)
- Karimian, N., Wilson, J. W., Yin, W., Peyton, A. J., Liu, J., Strangwood, M. and Davis, C. L. 2013. Assessment of electromagnetic properties of power station steels for lifetime extension. Presented at: 52nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013), Telford, England, 10-12 September 201352nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013). British Institute of Non-Destructive Testing pp. 160-171.
- Wilson, J. W., Karimian, N., Yin, W., Liu, J., Davis, C. L. and Peyton, A. J. 2013. Magnetic sensing for microstructural assessment of power station steels: magnetic Barkhausen noise and minor loop measurements. Presented at: 17th Sensors and Their Applications Conference, Dubrovnik, Croatia, 16-18 September 2013, Vol. 450. Vol. 1. IOP Publishing: Conference Series pp. 12041., (10.1088/1742-6596/450/1/012041)
- Wilson, J. W. et al. 2013. Towards the development of a field deployable EM inspection tool for the evaluation of power station steels. Presented at: 52nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013), Telford, England, 10-12 September 201352nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013). British Institute of Non-Destructive Testing ( BINDT ) pp. 180-189.
2012
- Yin, W. et al. 2012. Measurement of electromagnetic properties of power station steels. NDT and E International 51, pp. 135-141. (10.1016/j.ndteint.2012.06.008)
- Yin, W. et al. 2012. Measurement of electromagnetic properties of power station steels. Presented at: 2012 IEEE International Instrumentation and Measurement Technology (I2MTC), Graz, Austria, 13-16 May 20122012 IEEE International Instrumentation and Measurement Technology Conference Proceedings. IEEE pp. 1603-1606., (10.1109/I2MTC.2012.6229119)
- Liu, J., Hao, X. J., Zhou, L., Strangwood, M., Davis, C. L. and Peyton, A. J. 2012. Measurement of microstructure changes in 9Cr-1Mo and 2.25Cr-1Mo steels using an electromagnetic sensor. Scripta Materialia 66(6), pp. 367-370. (10.1016/j.scriptamat.2011.11.032)
2009
- Liu, J., Liu, C. and Conway, P. P. 2009. Kinetic Monte Carlo simulation of kinetically limited copper electrocrystallization on an atomically even surface. Electrochimica Acta 54(27), pp. 6941-6948. (10.1016/j.electacta.2009.07.019)
- Liu, J., Liu, C. and Conway, P. P. 2009. Kinetic Monte Carlo simulation of electrodeposition of polycrystalline Cu. Electrochemistry Communications 11(11), pp. 2207-2211. (10.1016/j.elecom.2009.09.032)
- Liu, J., Liu, C., Conway, P. P., Zeng, J. and Wang, C. 2009. Growth and recrystallization of electroplated copper columns. Presented at: 10th International Conference on Electronic Packaging Technology & High Density Packaging (2009 ICEPT), Bejing, China, 10-13 August 20092009 International Conference on Electronic Packaging Technology & High Density Packaging. IEEE pp. 695-700., (10.1109/ICEPT.2009.5270660)
2008
- Liu, J., Liu, C. and Conway, P. P. 2008. Growth mechanism of copper column by electrodeposition for electronic interconnections. Presented at: 2nd Electronics System-Integration Technology Conference (ESTC 2008), Greenwich, England, 1-4 September 20082008 2nd Electronics System-Integration Technology Conference. IEEE pp. 679-684., (10.1109/ESTC.2008.4684432)
2007
- Liu, J., Liu, C. and Conway, P. P. 2007. Crystallographic features of copper column growth by reversible pulse current electrodeposition. Presented at: IEEE 57th Electronic Components and Technology Conference (ECTC 2007), Reno, NV, USA, 29 May - 1 June 20072007 Proceedings 57th Electronic Components and Technology Conference. IEEE pp. 892-897., (10.1109/ECTC.2007.373904)
2005
- Liu, J., Wang, R. and Qian, Y. 2005. The formation of a single-pulse electrospark deposition spot. Surface and Coatings Technology 200(7), pp. 2433-2437. (10.1016/j.surfcoat.2004.07.104)
2004
- Wang, R. J., Qian, Y. Y. and Liu, J. 2004. Structural and interfacial analysis of WC92–Co8 coating deposited on titanium alloy by electrospark deposition. Applied Surface Science 228(1-4), pp. 405-409. (10.1016/j.apsusc.2004.01.043)
Articles
- Liu, J., Davis, C., Yue, S., Jolfaei, M. A., Shen, J. and Li, Y. 2025. Scalar permeability microstructure model considering crystallographic texture and grain size for magnetic evaluation of anisotropy in steel. Acta Materialia 289, article number: 120863. (10.1016/j.actamat.2025.120863)
- Yue, S., Yin, J., Li, Y., Dou, Y., Chen, R. and Liu, J. 2025. A modified fixed-point iteration algorithm for magnetic field computation with hysteresis models. IEEE Transactions on Magnetics 61(1), article number: 7400104. (10.1109/TMAG.2024.3490895)
- Li, Y., Li, Y., Lin, Z., Yue, S., Chen, R., Guo, P. and Liu, J. 2024. A hysteresis model for soft magnetic composites considering particle size distribution. IEEE Transactions on Magnetics 60(12), article number: 7301405. (10.1109/TMAG.2024.3458798)
- Yue, S., Liu, J., Li, Y. and Liu, G. 2024. Finite element modelling of the magnetic property behaviours of electrical steels in rotating fields considering their crystallographic textures. Materialia, article number: 102138. (10.1016/j.mtla.2024.102138)
- Liu, J. 2024. EBSDPolygonizer: Enabling realistic microstructural modelling. SoftwareX 25, article number: 101622. (10.1016/j.softx.2023.101622)
- Aghadavoudi Jolfaei, M., Liu, J., Zhou, L. F., Van Den Berg, F. and Davis, C. 2023. Non-destructive evaluation of magnetic anisotropy associated with crystallographic texture of interstitial free steels. Journal of Magnetism and Magnetic Materials 568, article number: 170374. (10.1016/j.jmmm.2023.170374)
- Liu, J. and Davis, C. 2021. Tensorial permeability microstructure model considering crystallographic texture and grain size for evaluation of magnetic anisotropy In polycrystalline steels. Philosophical Magazine 101(10), pp. 1224-1244. (10.1080/14786435.2021.1892229)
- Liu, J., Wilson, J., Davis, C. L. and Peyton, A. 2019. Magnetic characterisation of grain size and precipitate distribution by major and minor BH loop measurements. Journal of Magnetism and Magnetic Materials 481, pp. 55-67. (10.1016/j.jmmm.2019.02.088)
- Liu, J., Wilson, J., Davis, C. and Peyton, A. 2017. Optimized setup and protocol for magnetic domain imaging with in situ hysteresis measurement. Journal of Visualized Experiments 2017(129), article number: e56376. (10.3791/56376)
- Liu, J., Wilson, J., Strangwood, M., Davis, C. L. and Peyton, A. 2016. Magnetic characterisation of microstructural feature distribution in P9 and T22 steels by major and minor BH loop measurements. Journal of Magnetism and Magnetic Materials 401, pp. 579-592. (10.1016/j.jmmm.2015.10.075)
- Liu, J., Wilson, J., Strangwood, M., Davis, C. L., Peyton, A. and Parker, J. 2015. Electromagnetic evaluation of the microstructure of grade 91 tubes/pipes. International Journal of Pressure Vessels and Piping 132-13, pp. 65-71. (10.1016/j.ijpvp.2015.05.009)
- Zhou, L., Liu, J., Hao, X. J., Strangwod, M., Peyton, A. J. and Davis, C. L. 2014. Quantification of the phase fraction in steel using an electromagnetic sensor. NDT and E International 67, pp. 31-35. (10.1016/j.ndteint.2014.06.007)
- Liu, J., Strangwood, M., Davis, C. L. and Parker, J. 2014. Non-destructive characterisation of N/Al level in P91 steels using electromagnetic sensors. Materials Science and Technology 31(9), pp. 1042-1050. (10.1179/1743284714Y.0000000642)
- Wilson, J. W., Karimian, N., Liu, J., Yin, W., Davis, C. L. and Peyton, A. J. 2014. Measurement of the magnetic properties of P9 and T22 steel taken from service in power station. Journal of Magnetism and Magnetic Materials 360, pp. 52-58. (10.1016/j.jmmm.2014.01.057)
- Karimian, N., Wilson, J. W., Peyton, A. J., Yin, W., Liu, J. and Davis, C. L. 2014. Differential permeability behaviour of P9 and T22 power station Steels. Journal of Magnetism and Magnetic Materials 352(1), pp. 81-90. (10.1016/j.jmmm.2013.09.059)
- Liu, J., Strangwood, M., Davis, C. L. and Peyton, A. J. 2013. Magnetic evaluation of microstructure changes in 9Cr-1Mo and 2.25Cr-1Mo steels using electromagnetic sensors. Metallurgical and Materials Transactions A 44(13), pp. 5897-5909. (10.1007/s11661-013-1938-x)
- Liu, J., Liu, C. and Conway, P. P. 2013. Kinetic Monte Carlo simulation of the electrodeposition of polycrystalline copper: Effects of substrates and deposition parameters on the microstructure of deposits. Electrochimica Acta 97, pp. 132-142. (10.1016/j.electacta.2013.02.112)
- Yin, W. et al. 2012. Measurement of electromagnetic properties of power station steels. NDT and E International 51, pp. 135-141. (10.1016/j.ndteint.2012.06.008)
- Liu, J., Hao, X. J., Zhou, L., Strangwood, M., Davis, C. L. and Peyton, A. J. 2012. Measurement of microstructure changes in 9Cr-1Mo and 2.25Cr-1Mo steels using an electromagnetic sensor. Scripta Materialia 66(6), pp. 367-370. (10.1016/j.scriptamat.2011.11.032)
- Liu, J., Liu, C. and Conway, P. P. 2009. Kinetic Monte Carlo simulation of kinetically limited copper electrocrystallization on an atomically even surface. Electrochimica Acta 54(27), pp. 6941-6948. (10.1016/j.electacta.2009.07.019)
- Liu, J., Liu, C. and Conway, P. P. 2009. Kinetic Monte Carlo simulation of electrodeposition of polycrystalline Cu. Electrochemistry Communications 11(11), pp. 2207-2211. (10.1016/j.elecom.2009.09.032)
- Liu, J., Wang, R. and Qian, Y. 2005. The formation of a single-pulse electrospark deposition spot. Surface and Coatings Technology 200(7), pp. 2433-2437. (10.1016/j.surfcoat.2004.07.104)
- Wang, R. J., Qian, Y. Y. and Liu, J. 2004. Structural and interfacial analysis of WC92–Co8 coating deposited on titanium alloy by electrospark deposition. Applied Surface Science 228(1-4), pp. 405-409. (10.1016/j.apsusc.2004.01.043)
Book sections
- Aghadavoudi Jolfaei, M., Liu, J., van den Berg, F. and Davis, C. 2023. Measurement and modelling magnetic anisotropy due to crystallographic texture in interstitial free (IF) steels. In: Bilicz, S., Gyimothy, S. and Vertesy, G. eds. Electromagnetic Non-Destructive Evaluation (XXIV)., Vol. 46. Studies in Applied Electromagnetics and Mechanics IOS Press, pp. 17-23., (10.3233/SAEM230004)
Conferences
- Li, Y., Li, Y., Yue, S., Chen, R., Lin, Z. and Liu, J. 2024. An anisotropic hysteresis model considering microstructural feature. Presented at: 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC), Jeju, Korea, 02-05 June 2024Proceedings 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC). IEEE, (10.1109/CEFC61729.2024.10585668)
- Yue, S., Yin, J., Li, Y., Dou, Y., Chen, R. and Liu, J. 2024. A modified fixed-point iteration algorithm for magnetic field computation with hysteresis models. Presented at: 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC), Jeju, Korea, 02-05 June 2024Proceedings 2024 IEEE 21st Biennial Conference on Electromagnetic Field Computation (CEFC). IEEE, (10.1109/CEFC61729.2024.10586156)
- Liu, J. and Davis, C. 2016. A hysteresis model considering microstructural feature distribution. Presented at: 42nd Annual Review of Progress in Quantitative Nondestriuctive Evaluation, Minneapolis, MN, USA, 26-31 July 2015 Presented at Chimenti, D. E. and Bond, L. J. eds., Vol. 1706. Vol. 1. AIP Publishing pp. 90018., (10.1063/1.4940555)
- Liu, J., Wilson, J., Davis, C. and Peyton, A. 2016. Evaluation of precipitate and grain size distribution in steels by magnetic hysteresis measurement and modelling. Presented at: 55th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016), Nottingham, England, 12-14 September 2016Proceedings of 55th Annual British Conference of Non-Destructive Testing - NDT 2016. British Institute of Non-Destructive Testing ( BINDT )
- Wilson, J. W., Karimian, N., Peyton, A. J., Davis, C. and Liu, J. 2016. Development of a tool for the magnetic assessment of microstructural changes in Grade 91 power station steel tubes. Presented at: 55th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016), Nottingham, England, 12-14 September 201655th Annual Conference of the British Institute of Non-Destructive Testing (NDT 2016). British Institute of Non-Destructive Testing ( BINDT ) pp. 72-79.
- Wilson, J. W., Karimian, N., Peyton, A. ., Liu, J., Kahlon, N. S. and Davis, C. L. 2014. Incremental permeability and magnetic Barkhausen noise for the assessment of microstructural changes in Grade 91 power station tubes. Presented at: 53rd Annual Conference of the British Institute of Non-Destructive Testing (NDT 2014), Manchester, England, 9-11 September 201453rd Annual Conference of the British Institute of Non-Destructive Testing (NDT 2014). British Institute of Non-Destructive Testing ( BINDT )
- Karimian, N., Yin, W., Liu, J., Hao, X. J., Strangwood, M., Davis, C. L. and Peyton, A. J. 2013. Non-contact EM measurement of the properties of power station steels taken from service. Presented at: 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Minneapolis, MN, USA, 6-9 May 20132013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE pp. 1573-1578., (10.1109/I2MTC.2013.6555679)
- Karimian, N., Wilson, J. W., Yin, W., Liu, J., Davis, C. L. and Peyton, A. J. 2013. Magnetic sensing for microstructural assessment of power station steels: differential permeability and magnetic hysteresis. Presented at: 17th Sensors and Their Applications Conference, Dubrovnik, Croatia, 16-18 September 2013, Vol. 450. IOP Publishing: Conference Series, (10.1088/1742-6596/450/1/012042)
- Karimian, N., Wilson, J. W., Yin, W., Peyton, A. J., Liu, J., Strangwood, M. and Davis, C. L. 2013. Assessment of electromagnetic properties of power station steels for lifetime extension. Presented at: 52nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013), Telford, England, 10-12 September 201352nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013). British Institute of Non-Destructive Testing pp. 160-171.
- Wilson, J. W., Karimian, N., Yin, W., Liu, J., Davis, C. L. and Peyton, A. J. 2013. Magnetic sensing for microstructural assessment of power station steels: magnetic Barkhausen noise and minor loop measurements. Presented at: 17th Sensors and Their Applications Conference, Dubrovnik, Croatia, 16-18 September 2013, Vol. 450. Vol. 1. IOP Publishing: Conference Series pp. 12041., (10.1088/1742-6596/450/1/012041)
- Wilson, J. W. et al. 2013. Towards the development of a field deployable EM inspection tool for the evaluation of power station steels. Presented at: 52nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013), Telford, England, 10-12 September 201352nd Annual Conference of the British Institute of Non-Destructive Testing 2013 (NDT 2013). British Institute of Non-Destructive Testing ( BINDT ) pp. 180-189.
- Yin, W. et al. 2012. Measurement of electromagnetic properties of power station steels. Presented at: 2012 IEEE International Instrumentation and Measurement Technology (I2MTC), Graz, Austria, 13-16 May 20122012 IEEE International Instrumentation and Measurement Technology Conference Proceedings. IEEE pp. 1603-1606., (10.1109/I2MTC.2012.6229119)
- Liu, J., Liu, C., Conway, P. P., Zeng, J. and Wang, C. 2009. Growth and recrystallization of electroplated copper columns. Presented at: 10th International Conference on Electronic Packaging Technology & High Density Packaging (2009 ICEPT), Bejing, China, 10-13 August 20092009 International Conference on Electronic Packaging Technology & High Density Packaging. IEEE pp. 695-700., (10.1109/ICEPT.2009.5270660)
- Liu, J., Liu, C. and Conway, P. P. 2008. Growth mechanism of copper column by electrodeposition for electronic interconnections. Presented at: 2nd Electronics System-Integration Technology Conference (ESTC 2008), Greenwich, England, 1-4 September 20082008 2nd Electronics System-Integration Technology Conference. IEEE pp. 679-684., (10.1109/ESTC.2008.4684432)
- Liu, J., Liu, C. and Conway, P. P. 2007. Crystallographic features of copper column growth by reversible pulse current electrodeposition. Presented at: IEEE 57th Electronic Components and Technology Conference (ECTC 2007), Reno, NV, USA, 29 May - 1 June 20072007 Proceedings 57th Electronic Components and Technology Conference. IEEE pp. 892-897., (10.1109/ECTC.2007.373904)
Websites
- Aghadavoudi Jolfaei, M., Liu, J., Zhou, L., Van Den Berg, F. and Davis, C. L. 2022. Non-destructive evaluation of magnetic anisotropy associated with crystallographic texture of interstitial free steels using an electromagnetic sensor. [Online]. SSRN: Elsevier. (10.2139/ssrn.4267904) Available at: http://dx.doi.org/10.2139/ssrn.4267904
Ymchwil
Modelu Magnetig Microstrwythurol
Mae microstrwythur yn dylanwadu'n sylweddol ar briodweddau magnetig aloion magnetig, yn debyg i sut mae'n effeithio ar briodoleddau mecanyddol aloion strwythurol. Mae damcaniaethau sefydledig a chyfreithiau empirig yn llwyddo i gydberthyn microstrwythur ag eiddo mecanyddol, gyda chymorth offer efelychu masnachol datblygedig sy'n galluogi rhagfynegiadau manwl gywir. Er gwaethaf y datblygiadau hyn, mae diffyg gwybodaeth a modelu nodedig o hyd ynghylch y berthynas rhwng microstrwythur ac eiddo magnetig.
Mae dealltwriaeth gyffredinol y cysylltiad rhwng microstrwythur a phriodoleddau magnetig mewn aloion magnetig yn empirig yn bennaf. Yn aml mae'n parhau i fod wedi'i gyfyngu i gydberthynas unigol rhwng paramedrau microstrwythurol unigol ac eiddo magnetig, ac yn gyffredinol mae'n gyfyngedig i gwmpas cyfyng o gymhwysedd.
Yng ngoleuni'r heriau hyn, ein nod yw arloesi datblygiad System Modelu Magnetig Microstrwythurol soffistigedig. Bydd y system arloesol hon yn gonglfaen ar gyfer peirianneg microstrwythur a dadansoddeg deunyddiau magnetig. Ein nod yw mynd y tu hwnt i ffiniau presennol, gan gyfoethogi'r dirwedd fodelu gydag offer sy'n gallu nid yn unig rhagweld priodweddau magnetig o ficrostrwythurau, ond hefyd yn galluogi'r microstrwythurau gwrthdroad-rhagweld yn seiliedig ar briodweddau magnetig. Trwy ein hymchwil arloesol, rydym yn ceisio dadorchuddio dimensiynau newydd wrth ddeall a thrin yr eiddo magnetig mewn aloion.
Trosolwg o fy ymchwil ym maes Modelu Magnetig Microstrwythurol
Gwella modelu microstrwythurol gyda microstrwythur realistig
Rwyf wedi datblygu a chynnal ystorfa ar gyfer ap sy'n seiliedig ar MATLAB, EBSDPolygonizer, a ddyluniwyd i drawsnewid data grawn EBSD yn gynrychioliadau polygonal. Yn y trosiad hwn, mae pob grawn yn cael ei gynrychioli gan bolygon gwahanol. Mae'r trawsnewidiad hwn yn caniatáu ar gyfer defnyddio microstructures go iawn yn uniongyrchol fel geometregau mewn modelau elfen gyfyngedig (AB) ac aseiniad awtomataidd paramedrau materol ac amodau ffiniau i grawn unigol.
Addysgu
Rwy'n addysgu'r modiwlau canlynol
- Sylfaen: EN0012 Cylchedau a Dadansoddiad Trydanol
- Blwyddyn 2: EN2714 Technoleg Trydanol
- Blwyddyn 2: EN2712 System Pŵer Trydan
- Blwyddyn 3: EN3820 Cyflwyniad i Ddeunyddiau Magnetig
- Blwyddyn 4 / MSc: EN4821 / ENT758 DYFEISIAU MAGNETIG: TRANSDUCERS, SYNWYRYDDION AC ACTUATORS
Bywgraffiad
Mae Dr. Jun Liu yn addysgwr ac ymchwilydd ymroddedig, sydd ar hyn o bryd yn gwasanaethu fel Darlithydd ym Mhrifysgol Caerdydd ers mis Tachwedd 2020. Gyda chefndir cyfoethog mewn gwyddoniaeth a pheirianneg deunyddiau, mae Jun wedi meithrin arbenigedd helaeth ym mharthau cynnil deunyddiau a magneteg.
Dechreuodd Jun ar ei daith academaidd yn Sefydliad Technoleg Harbin yn Tsieina, gan ennill Baglor mewn Peirianneg mewn Weldio yn 2001, ac yna Meistr Peirianneg mewn Peirianneg mewn Peirianneg Prosesu Deunyddiau yn 2003. Wedi'i yrru gan angerdd am ddyfnhau eu gwybodaeth, aeth ymlaen â'u haddysg ym Mhrifysgol Loughborough, lle dyfarnwyd PhD iddo mewn electrocrystallisation a deunyddiau electronig yn 2010.
Cyn ymuno â Phrifysgol Caerdydd, cyfoethogodd Jun ei daith broffesiynol trwy gyfraniadau ymchwil sylweddol ym maes gwerthuso microstrwythur dur nad oedd yn ddinistriol. Roedd ganddo swydd fel Cymrawd Ymchwil, gan gyfrannu at brosiectau amrywiol a ariennir gan yr EPSRC a'r UE. Mae ei waith effeithiol, a wnaed ym Mhrifysgol Birmingham a Phrifysgol Warwick, wedi bod yn allweddol wrth hyrwyddo dealltwriaeth a methodolegau yn y maes.
Safleoedd academaidd blaenorol
- 2020 - Yn bresennol: Darlithydd, Ysgol Peirianneg, Prifysgol Caerdydd
- 2014 - 2020: Cymrawd Ymchwil Ôl-ddoethurol, WMG, Prifysgol Warwick
- 2010 - 2014: Cymrawd Ymchwil Postodctoral, Ysgol Meteleg a Deunyddiau, Prifysgol Birmingham
Pwyllgorau ac adolygu
- Adolygydd cyfnodolion:
- Metelegol a Deunyddiau Trafodiad A
- Journal of Magentism and Magnetic Materials
- Gwyddoniaeth Deunyddiau a Pheirianneg A
- NDT & E International
- International Journal of Pressure Vessels and Piping
- IEEE Sensors Journal
- Trafodion IEEE ar Wybodeg Diwydiannol
- Mynediad IEEE
- Journal of Alloys and Cyfansoddion
- Ffilmiau Solid tenau
- Physica Scripta
- The International Journal of Advanced Manufacturing Technology
- Synwyryddion
- Mesuriadau
- Deunyddiau Smart a Strwythurau Metelau
- Grisialau
- Metelau
Meysydd goruchwyliaeth
Mae gen i ddiddordeb mewn goruchwylio myfyrwyr ymchwil ym maes deunyddiau magnetig a chymwysiadau gan gynnwys ond heb fod yn gyfyngedig i:
- Nodweddu, prosesu a chymwysiadau deunyddiau magnetig
- Gwerthuso a phrofi annistrywiol magnetig
- modelu hysteresis magnetig
- Modelu elfen gyfyngedig o systemau electromagnetig
- Microstructure - eiddo ffisegol - perthnasau eiddo mecanyddol
Goruchwyliaeth allanol:
Cyd-oruchwyliwr (15%) ar gyfer Ondi Mukherjee (PhD ym Mhrifysgol Warwick) -- Efelychu Datblygiad Gwead yn ystod Prosesu Dur (2019-presennol)
Contact Details
LiuJ118@caerdydd.ac.uk
+44 29208 79056
Adeiladau'r Frenhines, Ystafell Ystafell E/3.19, 5 The Parade, Heol Casnewydd, Caerdydd, CF24 3AA
+44 29208 79056
Adeiladau'r Frenhines, Ystafell Ystafell E/3.19, 5 The Parade, Heol Casnewydd, Caerdydd, CF24 3AA