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A new flexible multi-point incremental sheet forming process with multi-layer sheets (2023)
Journal Article
Zhao, X., & Ou, H. (2023). A new flexible multi-point incremental sheet forming process with multi-layer sheets. Journal of Materials Processing Technology, 322, Article 118214. https://doi.org/10.1016/j.jmatprotec.2023.118214

In this research, a new flexible multi-point incremental sheet forming process with multi-layer sheets (F-MPIF-MLS) was proposed. The novelty of this new forming process is demonstrated by two specific aspects of contribution. The first is the develo... Read More about A new flexible multi-point incremental sheet forming process with multi-layer sheets.

Modelling of Stress Evolution and Its Effect on Formability in Tension Under Cyclic Bending Plus Compression (2023)
Conference Proceeding
Peng, W., & Ou, H. (2024). Modelling of Stress Evolution and Its Effect on Formability in Tension Under Cyclic Bending Plus Compression. In K. Mocellin, P. Bouchard, R. Bigot, & T. Balan (Eds.), Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology o (713-721). https://doi.org/10.1007/978-3-031-41023-9_71

Single point incremental forming (SPIF) and Double-sided incremental forming (DSIF) are two main variants of incremental sheet forming (ISF) processes. Tension under cyclic bending (TCB) have been developed as a means for experimental evaluation and... Read More about Modelling of Stress Evolution and Its Effect on Formability in Tension Under Cyclic Bending Plus Compression.

A new analytical model for force prediction in incremental sheet forming (2023)
Journal Article
Zhu, H., & Ou, H. (2023). A new analytical model for force prediction in incremental sheet forming. Journal of Materials Processing Technology, 318, Article 118037. https://doi.org/10.1016/j.jmatprotec.2023.118037

A new analytical model for forming force prediction in the whole process of incremental sheet forming (ISF) is presented in this work. The modelling of contact region, thickness distribution and strain components are carried out as the basis for the... Read More about A new analytical model for force prediction in incremental sheet forming.

Micromechanical Modeling of the Deformation and Damage Behavior of Al6092/SiC Particle Metal Matrix Composites (2023)
Journal Article
Gatea, S., Jwad, T., Chen, F., & Ou, H. (2023). Micromechanical Modeling of the Deformation and Damage Behavior of Al6092/SiC Particle Metal Matrix Composites. Journal of Materials Engineering and Performance, 32, 10680-10701. https://doi.org/10.1007/s11665-023-07907-4

To enhance the performance and design of metal matrix composites, it is extremely important to gain a better understanding of how the microstructure influences the deformation and damage behavior of metal matrix composites under different loading con... Read More about Micromechanical Modeling of the Deformation and Damage Behavior of Al6092/SiC Particle Metal Matrix Composites.

Deformation mechanisms and fracture in tension under cyclic bending plus compression, single point and double-sided incremental sheet forming processes (2022)
Journal Article
Peng, W., & Ou, H. (2023). Deformation mechanisms and fracture in tension under cyclic bending plus compression, single point and double-sided incremental sheet forming processes. International Journal of Machine Tools and Manufacture, 184, Article 103980. https://doi.org/10.1016/j.ijmachtools.2022.103980

This study investigates the deformation and fracture mechanisms of two testing methods, tension under cyclic bending (TCB) and tension under cyclic bending plus compression (TCBC) and their relationship to single point (SPIF) and double-sided (DSIF)... Read More about Deformation mechanisms and fracture in tension under cyclic bending plus compression, single point and double-sided incremental sheet forming processes.

Hybrid vacuum-robotic forming of reinforced composite laminates (2022)
Journal Article
Elkington, M. P., Mistry, P. J., Johnson, M. S., & Ou, H. (2023). Hybrid vacuum-robotic forming of reinforced composite laminates. Journal of Reinforced Plastics and Composites, 42(11-12), 611-623. https://doi.org/10.1177/07316844221135211

A methodology is presented to implement robotic actuators into diaphragm forming of composite laminates. This Hybrid Vacuum-Robotic (HyVR) process is specifically targeted to prevent ‘bridging’ type defects. Examples are presented of successfully for... Read More about Hybrid vacuum-robotic forming of reinforced composite laminates.

Heat generation, plastic deformation and residual stresses in friction stir welding of aluminium alloy (2022)
Journal Article
Salih, O. S., Ou, H., & Sun, W. (2023). Heat generation, plastic deformation and residual stresses in friction stir welding of aluminium alloy. International Journal of Mechanical Sciences, 238, Article 107827. https://doi.org/10.1016/j.ijmecsci.2022.107827

The interactions among thermal history, plastic deformation and residual stresses in the friction stir welding (FSW) process under different welding parameters have been widely considered a crucial issue and still not fully understood. In the present... Read More about Heat generation, plastic deformation and residual stresses in friction stir welding of aluminium alloy.

Coupled quantitative modeling of microstructural evolution and plastic flow during continuous dynamic recrystallization (2022)
Journal Article
Chen, F., Tian, X., Wu, G., Zhu, H., Ou, H., & Cui, Z. (2022). Coupled quantitative modeling of microstructural evolution and plastic flow during continuous dynamic recrystallization. International Journal of Plasticity, 156, Article 103372. https://doi.org/10.1016/j.ijplas.2022.103372

Continuous dynamic recrystallization (cDRX) dominates microstructural evolution during the hot working of metallic materials with high stacking fault energy (SFE), such as aluminum alloys. However, in reality, a lack of quantitative and visual modeli... Read More about Coupled quantitative modeling of microstructural evolution and plastic flow during continuous dynamic recrystallization.

Numerical and experimental investigation of formability in incremental sheet forming of particle-reinforced metal matrix composite sheets (2022)
Journal Article
Gatea, S., Tawfiq, T. A. S., & Ou, H. (2022). Numerical and experimental investigation of formability in incremental sheet forming of particle-reinforced metal matrix composite sheets. International Journal of Advanced Manufacturing Technology, 120(3-4), 1889-1900. https://doi.org/10.1007/s00170-022-08881-2

Aluminium matrix composites (AMCs) have a high strength-to-weight ratio, high stiffness, and good damage resistance under a wide range of operating conditions, making them a viable alternative to traditional materials in a variety of technical applic... Read More about Numerical and experimental investigation of formability in incremental sheet forming of particle-reinforced metal matrix composite sheets.

Constitutive modelling of hot deformation behaviour of metallic materials (2021)
Journal Article
Zhu, H., & Ou, H. (2022). Constitutive modelling of hot deformation behaviour of metallic materials. Materials Science and Engineering: A, 832, Article 142473. https://doi.org/10.1016/j.msea.2021.142473

The complexity of hot deformation behaviours of metallic materials is acknowledged in decades of study. The present work uses a new constitutive model by Zhu-Ou-Popov (ZOP model) and its modifications to predict the hot deformation behaviours of meta... Read More about Constitutive modelling of hot deformation behaviour of metallic materials.

PEEK based cranial reconstruction using thermal assisted incremental sheet forming (2021)
Journal Article
Chen, L., Chen, F., Gatea, S., & Ou, H. (2022). PEEK based cranial reconstruction using thermal assisted incremental sheet forming. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 236(6-7), 997-1004. https://doi.org/10.1177/09544054211045904

Compared to conventional sheet forming operations, incremental sheet forming (ISF) is a flexible forming technique that can achieve higher formability in terms of localized deformation. Due to excellent mechanical properties and X-ray penetration, po... Read More about PEEK based cranial reconstruction using thermal assisted incremental sheet forming.

Multiscale modeling of discontinuous dynamic recrystallization during hot working by coupling multilevel cellular automaton and finite element method (2021)
Journal Article
Chen, F., Zhu, H., Chen, W., Ou, H., & Cui, Z. (2021). Multiscale modeling of discontinuous dynamic recrystallization during hot working by coupling multilevel cellular automaton and finite element method. International Journal of Plasticity, 145, Article 103064. https://doi.org/10.1016/j.ijplas.2021.103064

Discontinuous dynamic recrystallization (dDRX) is considered an effective way to obtain fine grain microstructures during hot working of materials with low-to-medium stacking fault energy (SFE). However, to date, investigation and modeling of dDRX in... Read More about Multiscale modeling of discontinuous dynamic recrystallization during hot working by coupling multilevel cellular automaton and finite element method.

Surface roughness analysis of medical grade titanium sheets formed by single point incremental forming (2021)
Journal Article
Gatea, S., & Ou, H. (2021). Surface roughness analysis of medical grade titanium sheets formed by single point incremental forming. International Journal of Advanced Manufacturing Technology, 114, 2975–2990. https://doi.org/10.1007/s00170-021-07056-9

Single point incremental forming (SPIF) process has proven benefits in terms of formability, flexibility, and low cost as compared to conventional sheet forming, although it has some issues such as dimensional accuracy and low quality of surface fini... Read More about Surface roughness analysis of medical grade titanium sheets formed by single point incremental forming.

Incremental sheet forming of thermoplastics: a review (2020)
Journal Article
Zhu, H., Ou, H., & Popov, A. (2020). Incremental sheet forming of thermoplastics: a review. International Journal of Advanced Manufacturing Technology, 111, 565-587. https://doi.org/10.1007/s00170-020-06056-5

Incremental sheet forming (ISF) is a promising flexible manufacturing process, which has been tested in sheet forming of various metallic materials. Although ISF based forming of thermoplastics is relatively new, it has drawn considerable interests a... Read More about Incremental sheet forming of thermoplastics: a review.

Double-sided incremental forming: a review (2019)
Journal Article
Peng, W., Ou, H., & Becker, A. (2019). Double-sided incremental forming: a review. Journal of Manufacturing Science and Engineering, 141(5), https://doi.org/10.1115/1.4043173

Incremental sheet forming (ISF) or single point incremental forming (SPIF) processes have been developed rapidly in the past three decades. Its high flexibility and easy operability have a significant appeal for industrial applications and substantia... Read More about Double-sided incremental forming: a review.

Effect of tooling surface on friction conditions in cold forging of an aluminum alloy (2018)
Journal Article
Hu, C., Ding, T., Ou, H., & Zhao, Z. (2019). Effect of tooling surface on friction conditions in cold forging of an aluminum alloy. Tribology International, 131, 353-362. https://doi.org/10.1016/j.triboint.2018.11.002

Friction during cold forging of aluminum was analyzed with a ring with boss compression test (RCT-B) and an optimum spike forging test (O-SFT). The tool surface was treated with three methods: flat grinding, bead blasting, and lapping-plus-polishing.... Read More about Effect of tooling surface on friction conditions in cold forging of an aluminum alloy.

Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite (2018)
Journal Article
Salih, O. S., Ou, H., Wei, X., & Sun, W. (2019). Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite. Materials Science and Engineering: A, 742, 78-88. https://doi.org/10.1016/j.msea.2018.10.116

There is a need for improved understanding on the effects of friction stir welding (FSW) on the metallurgical and mechanical properties of aluminium matrix composite (AMC). In this study, AA6092/SiC/17.5p-T6 AMC joints were produced by using FSW with... Read More about Microstructure and mechanical properties of friction stir welded AA6092/SiC metal matrix composite.

Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model (2018)
Journal Article
Gatea, S., Lu, B., Chen, J., Ou, H., & McCartney, G. (2019). Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model. International Journal of Material Forming, 12(4), 553–574. https://doi.org/10.1007/s12289-018-1434-3

The incremental sheet forming (ISF) process is considered as a feasible solution for forming a variety of small batch and even customised sheet components. The quality of an ISF product is affected by various process parameters, e.g. sheet material,... Read More about Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model.

Deformation and fracture characteristics of Al6092/SiC/17.5p metal matrix composite sheets due to heat treatments (2018)
Journal Article
Gatea, S., Ou, H., & McCartney, G. (2018). Deformation and fracture characteristics of Al6092/SiC/17.5p metal matrix composite sheets due to heat treatments. Materials Characterization, 142, https://doi.org/10.1016/j.matchar.2018.05.050

In metal matrix composite (MMC) materials, the reaction between the metal matrix and reinforcement particles could change the composition of the matrix and the interface and lead to interfacial compounds. These intermetallic compounds may have either... Read More about Deformation and fracture characteristics of Al6092/SiC/17.5p metal matrix composite sheets due to heat treatments.