Professor Lin''s research experience is in Materials and process modelling, Solid/Computational mechanics, which includes micro-mechanics modelling, and its application in creep-damage, cyclic-plasticity-damage, viscoplasticity and advanced metal forming technologies.
At the University of Sheffield and UMIST, He worked on the development of unified creep-damage, viscoplasticity-damage, coupled creep and cyclic-plasticity damage constitutive equations. These equations were implemented in FE solvers to predict the damage and failure of engineering materials, such as copper, Al-alloys and nickel-based super-alloys, under different working conditions.
At the University of Birmingham, He worked on the development of unified viscoplastic constitutive equations to model micro-structure and damage evolution in hot/warm metal forming processes. Some examples include: (i) phase transformation in hot-stamping with cold-die quenching, (ii) grain growth in superplastic forming, (iii) age precipitation hardening in creep-age-forming, (iv) recrystallisation, grain size and damage evolution in hot rolling, etc.. He is one of the originators for the development of Evolutionary Algorithms (EA)-based optimization techniques for the determination of physically-based unified constitutive equations from experimental data.
He has also developed an integrated facility for micro-mechanics modelling. Particular applications include the forming of micro components, such as extrusion of micro pins, hydroforming of micro-tubes, etc.
et al., 2018, Effect of machining-induced residual stress on springback of creep age formed AA2050 plates with asymmetric creep-ageing behaviour, International Journal of Machine Tools & Manufacture, Vol:132, ISSN:0890-6955, Pages:113-122
et al., 2018, A review of force reduction methods in precision forging axisymmetric shapes, International Journal of Advanced Manufacturing Technology, Vol:97, ISSN:0268-3768, Pages:2809-2833
Shao Z, Li N, Lin J, A New Damage Model for Predicting Forming Limits under Hot Stamping Conditions, THE INTERNATIONAL CONFERENCE ON PLASTICITY, DAMAGE, AND FRACTURE 2017
Shao Z, Li N, Lin J, The comparison of two continuum damage mechanics-basedmaterial models for formability prediction of AA6082 underhot stamping conditions, Materials Modelling and Testing for Sheet Metal Forming IDDRG 2017
et al., An Investigation, Using Standard Experimental Techniques, to Determine FLCs at Elevated Temperature for Aluminium Alloys, The 3rd International Conference on New Forming Technology