Mikko Hokka
About me
I am professor of Materials Science, and currently I am the head of the unit of Materials Science and Environmental Engineering.My current research interests are closely related to the experimental characterization of material behavior under dynamic loading. I am interested in developing experimental characterization methods for high and low temperature testing at high strain rates, and various high speed digital photography and digital image correlation techniques for studying dynamic phenomena. More detailed examples include effects of strain rate and temperature (adiabatic heating) on the strain induced phase transformations, percussive drilling of rocks and concrete, plastic deformation of high entropy alloys, modeling of the stacking fault energy, and characterization of the effects of adiabatic heating on plastic deformation using simultaneous high speed optical and infrared imaging. Please see more on my website:
https://research.tuni.fi/impact/
Keywords: Mechanical testing, Experimental Mechanics, Digital Image Correlation, Infrared Imaging, Split Hopkinson Pressure Bar, Dynamic Behavior of Materials, Elasticity, time dependent plasticity, microplasticity, fracture and failure.
Main positions of trust
Member of DYMAT Governing Board (https://dymat.org/) since 2016
Latest publications
A numerical analysis of weakening of a granitic rock by piezoelectric excitation of quartz
Rubio Ruiz, A., Saksala, T., Kane, P-A. & Hokka, M., 2023, Proceedings of the ISRM 15th International Congress on Rock Mechanics and Rock Engineering & 72nd Geomechanics Colloquium: Challenges in Rock Mechanics and Rock Engineering. Schubert, W. & Kluckner, A. (eds.). p. 1852-1857Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review
Effects of strain rate and adiabatic heating on mechanical behavior of medium manganese Q&P steels
Langi, V., Soares, G. C., Ahmed, S., Peura, P. & Hokka, M., 16 Feb 2023, In: Materials Science and Engineering A. 865, 10 p., 144659.Research output: Contribution to journal › Article › Scientific › peer-review
Exceptional Microscale Plasticity in Amorphous Aluminum Oxide at Room Temperature
Frankberg, E. J., Lambai, A., Zhang, J., Kalikka, J., Khakalo, S., Paladino, B., Cabrioli, M., Mathews, N. G., Salminen, T., Hokka, M., Akola, J., Kuronen, A., Levänen, E., Di Fonzo, F. & Mohanty, G., 2023, (E-pub ahead of print) In: Advanced Materials.Research output: Contribution to journal › Article › Scientific › peer-review
High-cycle fatigue model calibration with a deterministic optimization approach
Rubio Ruiz, A., Saksala, T., Baroudi, D., Hokka, M. & Kouhia, R., 2023, In: International Journal of Fatigue. 175, 107747.Research output: Contribution to journal › Article › Scientific › peer-review
In situ damage characterization of CFRP under compression using high-speed optical, infrared and synchrotron X-ray phase-contrast imaging
Pournoori, N., Corrêa Soares, G., Lukić, B., Isakov, M., Belone, M. C. L., Hokka, M. & Kanerva, M., Dec 2023, In: Composites Part A: Applied Science and Manufacturing. 175, 107766.Research output: Contribution to journal › Article › Scientific › peer-review
In-Situ X-ray Diffraction Analysis of Metastable Austenite Containing Steels Under Mechanical Loading at a Wide Strain Rate Range
Isakov, M., Langi, V., Pun, L., Soares, G. C., Kantor, I., Jørgensen, M. R. V. & Hokka, M., 2023, In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science. 54, p. 1320–1331Research output: Contribution to journal › Article › Scientific › peer-review
Microscale Strain Localizations and Strain-Induced Martensitic Phase Transformation in Austenitic Steel 301LN at Different Strain Rates
Pun, L., Soares, G. C., Bhusare, S., Isakov, M. & Hokka, M., Feb 2023, In: Metals. 13, 2, 207.Research output: Contribution to journal › Article › Scientific › peer-review
Modelling of fatigue damage in granitic rock by piezoelectric effect in quartz phase due to alternating current excitation
Saksala, T., Rubio Ruiz, A., Kouhia, R., Kane, P-A. & Hokka, M., 2023, In: Geomechanics and Geophysics for Geo-Energy and Geo-Resources. 9, 83.Research output: Contribution to journal › Article › Scientific › peer-review
On the use of an induced temperature gradient and full-field measurements to investigate and model the thermomechanical behaviour of an austenitic stainless steel 316
Correa Soares, G., Rubio Ruiz, A. & Hokka, M., 30 Jul 2023, (E-pub ahead of print) In: Strain. 12 p.Research output: Contribution to journal › Article › Scientific › peer-review
Weakening of Compressive Strength of Granite by Piezoelectric Actuation of Quartz Using High‑Frequency and High‑Voltage Alternating Current: A 3D Numerical Study
Saksala, T., Rubio Ruiz, A., Kane, P-A. & Hokka, M., 2023, In: Rock Mechanics and Rock Engineering. 18 p.Research output: Contribution to journal › Article › Scientific › peer-review