Research Thrust 2: Sheet Metal Implants for Trauma Repair

Dr. Kinsey with grad student Liz Mamros — Dr. Brad Kinsey with grad student Liz Mamros. Image: Jeremy Gasowski

Team Leads:

Dr. Brad Kinsey
UNH Department of Mechanical Engineering
Dr. Ian Baker
Dartmouth College Thayer School

Currently available metallic bio-implants required for trauma fixation hardware and surgical repair of severely fractured bones have functional and aesthetic limitations, and conflicting requirements of strength, lightweight, and anatomy-appropriate geometry. Current designs fail to meet these requirements, with failure rates over 15% in critical structures such as the jaw. Orthopedic trauma hardware is either machined or cast and thus is energy, time and cost-intensive to produce. Localized forming would allow for a hardened and thinner biomaterial with the required high strength and shape. NH BioMade is developing new approaches to improve the formability and strength of metallic bio-implants while decreasing the weight of the implant, with the prospect of rapid prototyping for patient-specific components.

Hypothesis:

Increased formability is exhibited by metallic alloys during non-linear deformation by locally controlling the dislocation behavior at the nanoscale, which creates a heterogeneous biomaterial in terms of strength and geometry.

INTELLECTUAL MERIT/NOVELTY:

Integrated processing-characterization-size sensitive modeling and experimentation
HPC allows the use of 106 elements as opposed to 104 elements achieving product scale simulations
Relationships between formability and microscale grain boundary and twin boundary interactions with dislocations
Heterogeneous, metallic biomaterials with complex geometries and superior properties, i.e., lightweight and high strength

RT2 Publications

Bhowmik, S., Zhang, J., Vogel, S., Nene, S., Mishra, R., McWilliams, B. & Knezevic, M. (2022). “Effects of plasticity-induced martensitic transformation and grain refinement on the evolution of microstructure and mechanical properties of a metastable high entropy alloy”. Journal of Alloys and Compounds, 891, 161871. doi: 10.1016/j.jallcom.2021.161871.

Cluff, S., Knezevic, M., Miles, M. P., Fullwood, D. T., Mishra, R. K., Sachdev, A. K., … Homer, E. R. (2021). “Coupling kinetic Monte Carlo and finite element methods to model the strain path sensitivity of the isothermal stress-assisted martensite nucleation in TRIP-assisted steels”. Mechanics of Materials, 154, 103707. doi: 10.1016/j.mechmat.2020.103707. 

Eghtesad, A., Germaschewski, K., & Knezevic, M. (2022). "Coupling of a multi-GPU accelerated elasto-visco-plastic fast Fourier transform constitutive model with the implicit finite element method". Computational Materials Science, 208, 111348. doi:10.1016/j.commatsci.2022.111348

Eghtesad, A., & Knezevic, M. (2021). “A full-field crystal plasticity model including the effects of precipitates: Application to monotonic, load reversal, and low-cycle fatigue behavior of Inconel 718”. Materials Science and Engineering: A, 803, 140478. doi: 10.1016/j.msea.2020.140478. 

Feng, Z., Pokharel, R., Vogel, S. C., Lebensohn, R. A., Pagan, D., Zepeda-Alarcon, E., Clausen, B., Martinez, R., Gray, G. T., & Knezevic, M. (2022). Crystal plasticity modeling of strain-induced martensitic transformations to predict strain rate and temperature sensitive behavior of 304 L steels: Applications to tension, compression, torsion, and impact. International Journal of Plasticity, 156, 103367. doi: 10.1016/j.ijplas.2022.103367

Feng, Z., Mamros, E., Ha, J., Kinsey, B. & Knezevic, M. (2021). “Modeling of plasticity-induced martensitic transformation to achieve hierarchical, heterogeneous, and tailored microstructures in stainless steels”. CIRP Journal of Manufacturing Science and Technology, 33, 389-397. doi: 10.1016/j.cirpj.2021.04.006.

Feng, Z., Zecevic, M., & Knezevic, M. (2021). “Stress-assisted (γ→α′) and strain-induced (γ→ε→α′) phase transformation kinetics laws implemented in a crystal plasticity model for predicting strain path sensitive deformation of austenitic steels”. International Journal of Plasticity, 136, 102807. doi: 10.1016/j.ijplas.2020.102807. 

Ferreri, N. C., Pokharel, R., Livescu, V., Brown, D. W., Knezevic, M., Park, J.-S., … Gray, G. T. (2020). “Effects of heat treatment and build orientation on the evolution of ϵ and α′ martensite and strength during compressive loading of additively manufactured 304L stainless steel”. Acta Materialia, 195, 59–70. doi: 10.1016/j.actamat.2020.04.036. 

Ha, J., Mayer, S., Feng, Z., Matukhno, N., Knezevic, M. & Kinsey, B. (2022). “Inducing <111> texture in AA5182-O through continuous-bending-under-tension and recovery heat treatment processes to influence r-values" CIRP Annals. doi: 10.1016/j.cirp.2022.04.059.

Knezevic, M., Ghorbanpour, S., Ferreri, N. C., Riyad, I. A., Kudzal, A. D., Paramore, J. D., … McWilliams, B. A. (2021). “Thermo-hydrogen refinement of microstructure to improve mechanical properties of Ti–6Al–4V fabricated via laser powder bed fusion”. Materials Science and Engineering: A, 809, 140980. doi: 10.1016/j.msea.2021.140980. 

Lee, J., Bong, H. J., & Ha, J. (2022). Efficient and robust stress integration algorithm for anisotropic distortional hardening law under cross-loading with latent hardening. European Journal of Mechanics - A/Solids, 96, 104775. doi: 10.1016/j.euromechsol.2022.104775

Mamros, E., Mayer, S., Banerjee, D., Iadicola, M., Kinsey, B., & Ha, J. (2022). Plastic anisotropy evolution of SS316L and modeling for novel cruciform specimen. International Journal of Mechanical Sciences, 234, 107663. doi: 10.1016/j.ijmecsci.2022.107663

Mamros, E., Eaton, M., Ha, J. & Kinsey, B. (2021). “Numerical Analysis of SS316L Biaxial Cruciform Specimens Under Proportional Loading Paths”. In:Proceedings of the ASME 2021 16th International Manufacturing Science and Engineering Conference MSEC2021 doi: 10.1115/msec2021-59877.

Mamros E.M., Mayer S.M., Ha J., Kinsey B.L. (2021) “Experimental Implementation of SS 316L Cruciform Testing to Achieve Various Deformation Paths”. In: Daehn G., Cao J., Kinsey B., Tekkaya E., Vivek A., Yoshida Y. (eds) Forming the Future. The Minerals, Metals & Materials Series. Springer, Cham. doi: 10.1007/978-3-030-75381-8_166.

Mamros E.M., Bram Kuijer M., Davarpanah M.A., Baker I., Kinsey B.L. (2021) “The Effect of Temperature on the Strain-Induced Austenite to Martensite Transformation in SS 316L During Uniaxial Tension”. In: Daehn G., Cao J., Kinsey B., Tekkaya E., Vivek A., Yoshida Y. (eds) Forming the Future. The Minerals, Metals & Materials Series. Springer, Cham. doi: 10.1007/978-3-030-75381-8_155.

Mamros, E. M., Kinsey, B. L., & Korkolis, Y. P. (2020). “Analytical Investigation of Varying Deformation Paths Using Microtube Inflation and Axial Tension”. ASME 2020 15th International Manufacturing Science and Engineering Conference. Volume 2: Manufacturing Processes; Manufacturing Systems; Nano/Micro/Meso Manufacturing; Quality and Reliability. doi: 10.1115/msec2020-8372. 

Mamros, E. M., Ha, J., Korkolis, Y. P., & Kinsey, B. L. (2020). “Experimental Investigation and Plasticity Modeling of SS316 L Microtubes Under Varying Deformation Paths”. Journal of Micro and Nano-Manufacturing, 8(4). doi: 10.1115/1.4049364.

Savage, D., Feng, Z. & Knezevic, M. (2021). “Identification of crystal plasticity model parameters by multi-objective optimization integrating microstructural evolution and mechanical data”. Computer Methods in Applied Mechanics and Engineering, 379, 113747. doi: 10.1016/j.cma.2021.113747.

Sharma, R., Poulin, C., Knezevic, M., Miles, M. & Fullwood, D. (2021). “Micromechanical origins of remarkable elongation-to-fracture in AHSS TRIP steels via continuous bending under tension”. Materials Science and Engineering: A, 825, 141876. doi: 10.1016/j.msea.2021.141876.

Veasna, K., Feng, Z., Zhang, Q., & Knezevic, M. (2023). "Machine learning-based multi-objective optimization for efficient identification of crystal plasticity model parameters." Computer Methods in Applied Mechanics and Engineering.doi: 10.1016/j.cma.2022.115740.

Wang, J., Zhu, G., Wang, L., Vasilev, E., Park, J.-S., Sha, G., … Knezevic, M. (2021). “Origins of high ductility exhibited by an extruded magnesium alloy Mg-1.8Zn-0.2Ca: Experiments and crystal plasticity modeling”. Journal of Materials Science & Technology, 84, 27–42. doi: 10.1016/j.jmst.2020.12.047. 

Learn more about our research thrusts:

Tissue regeneration scaffolds