Dr. ETIENNE TCHOFFO HOUDJI – Impact Mechanics and Dynamic Material Behavior

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Dr ÉtienneTchoffo Houdji : Leading Researcher in Impact Mechanics and Dynamic Material Behavior

National Advanced School of Engineering of Maroua, The University of Maroua/ Advanced School of Mines Transformation and Energy Resources, The University of Bertoua, Cameroon.

Congratulations, Dr ÉtienneTchoffo Houdji, on winning the esteemed Best Paper Award from Research! Your dedication, innovative research, and scholarly contributions have truly made a significant impact in your field. Your commitment to advancing knowledge and pushing the boundaries of research is commendable. Here’s to your continued success in shaping the future of academia and making invaluable contributions to your field. Well done!

  Dr ÉtienneTchoffo Houdji, a distinguished academic and researcher in the field of Impact Mechanics and Dynamic Material Behavior, holds a National Advanced School of Engineering of Maroua, The University of Maroua/ Advanced School of Mines Transformation and Energy Resources, The University of Bertoua, Cameroon.

Professional Profiles:

Education:

1997/1998 Government Bilingual High  School of Mbouda General Certificate of Education Advanced Level, Mathematics and Biology

1999/2000 The University of Dschang Bachelor of Physics

2001/2002 The University of Yaoundé  Master of Physics (without thesis) in Material Sciences

200 2/2003 University of Yaoundé I Master of Physics (with thesis) in Material Sciences

2020 University of Ngaoundéré Ph.D in Process Engineering/ Automatic, Control, Equipment, Modelling

Research Interests:
  •  FIELD OF RESEARCH: Solar Energy and Semi-conductor materials;
  •  AREA OF RESEARCH: Physics of Solar Cells and Solar (Photovoltaic and Thermal) Systems;
  •    PURPOSE OF THE RESEARCH: Optimization and control of solar (photovoltaic and thermal)
    systems for rural electrification and agricultural machinery in unpredictable weather conditions.

Publications & Contributions:

Bendé I. F., E. Tchoffo Houdji, G. B. Tchaya, J. L. Nsouandélé, M. Kamta, Haman-Djalo, Backstepping Controller Design for Power Quality Improvement in a Two Stage Grid-Connected Photovoltaic Systems with LCL Filter. International Transactions on Electrical Energy Systems, vol. 2023, Article ID 6604487, 18 pages, 2023. DOI: 10.1155/2023/6604487.

Falama, R.Z.; Dumbrava, V., Saidi, A.S., Tchoffo Houdji, E., Salah, C.B., Doka, S.Y. A (2023). “Comparative -Analysis-Based Multi-Criteria Assessment of On/Off-Grid Connected Renewable Energy Systems: A Case Study”. Energies, 16, 1540. DOI: 10.3390/en16031540

E. Tchoffo Houdji, G.B. Tchaya, Kodji Deli, G.J. Kayem, M. Kamta, Haman-Djalo, N. Djongyang, (2022) “Improvement of the granularity of flour and energy saving by speed control of the induction motor of the grinder for a small-scale production of corn flour”, Springer Nature Energy Efficiency, 15, 65 (2022). DOI: 10.1007/s12053-022-10075-4.

G.B. Tchaya, E. Tchoffo Houdji, M. Kamta, C. Kapseu, (2021) « Regulation of temperature on multi-trays in an indirect solar dryer (ISD) with energy storage and three airflow modes for drying sheatnuts », Hindawi, Journal of Engineering, Volume 2021, Article ID 6668095, 11 pages DOI : 10.1155/2021/6668095

G.B. Tchaya, E. Tchoffo Houdji, Moktar Garga, B. Kaldambe Zoua, J.L. Nsouandele, (2021) “Performance Improvement of a Hybrid Biomass / Indirect Solar Dryer (HBISD) for Drying Guava (Psidium Guajava)”. International Journal of Innovative Science, Engineering & Technology, Vol. 8 Issue 8, P.329-341

S. A. Ndjanda Heugang, H. T. Tagne Kamdem, E. Tchoffo Houdji and F. B. Pelap, (2020) “Transient energy and exergy analysis of parabolic trough solar collector with an application to Sahel climate”, International Journal of Sustainable Energy, DOI: 10.1080/14786451.2020.1828418.

G. B. Tchaya, J. M. Ango, E. Tchoffo Houdji, D. R. Djoulde, N. Djongyang, (2020) Design and Realization of a Mixed Solar Cooker: Application to the Cooking of the Sorghum Wort, Journal of Energy and Natural Resources. Vol. 9, N°2, pp. 75-80. DOI: 10.11648/j.jenr.20200902.14.

E. Tchoffo Houdji, D. Yamegueu, G.B. Tchaya, M. Kamta, Haman-Djalo, G.J. Kayem, (2019) “Power quality assessment in a stand-alone photovoltaic / battery system supplying an asynchronous motor through an adjustable speed drive”, International Journal of Scientific and Engineering Research (IJSER), Vol. 10 N°4, pp. 1157 – 1167

Kodji Deli, E. Tchoffo Houdji, N. Djongyang , A. Ayang and J.G. Tamba, (2018) “An investigation of incremental conductance based maximum power point tracking for photovoltaic water pumping system performances”, Revue des Energies Renouvelables Vol. 21 N° 3, pp. 455 – 472.

Kodji Deli, Etienne Tchoffo Houdji, Noel Djongyang & Donatien Njomo, (2017) “Operation and maintenance of back-up photovoltaic systems: An analysis based on a field study in Cameroon”, African Journal of Science, Technology, Innovation and Development, DOI:10.1080/20421338.2017.1341731.

J. Kessel Pombe, Haman-Djalo, Beda Tibi, E. Tchoffo Houdji and S. Heugang Ndjanda, (2017) “Optical and thermal performances of a solar parabolic trough collector under climate conditions of the Cameroon Sahelian Zones”, International Journal of Innovation and Scientific Research (IJISR), Vol. 29 No. 2, pp. 149-165.

Tchoffo Houdji E., Zékeng S. S., Sitamtze Youmbi B., and Maga E. (2011) “Kinetic Monte Carlo simulation of the order-disorder phase transition in a two dimensional binary alloy”. Syllabus Review, Vol. 2 N° 3, pp. 114 – 121.

Scientific communications

  • Aïssatta Ibamie and Tchoffo Houdji Etienne, (2022), « Thermal cooker ASAAB », Special Edition 2022 Inventions Geneva Evaluation Days- Virtual Event from 16-20 March 2022.
  • Etienne Tchoffo Houdji, Guy Bertrand. Tchaya, Benjamin Kaldambe Zoua, Moktar Garga, C.
    Kapseu, M. Kamta.. “Design And Assessment Of The Performance Of An Indirect Solar Poultry Egg
    Incubator With Pozzolan Used As Heat Storage Material”. International Energy2021-Conference,
    From 18 to 20 November 2021, MINRESI /CNDT, Yaounde, Cameroon.
  • Guy Bertrand Tchaya, Etienne Tchoffo Houdji, Jean Benjamin Bidias, Bastian Borel Ymele, Jean
    Luc Nsouandele. « Design and realization of a mixed and hybrid solar still for bioethanol production”. International Energy2021-Conference, From 18 to 20 November 2021, MINRESI/CNDT, Yaounde, Cameroon
  • E. Tchoffo Houdji, G.B. Tchaya, Kodji Deli, G.J. Kayem, M. Kamta, Haman-Djalo, N.
    Djongyang.”Improvement of the milling energy indices by speed control of the asynchronous motor
    of the grinder in a small scale production of corn flour”. LOREXP-2021 International Conference,
    from April 20 to 23, 2021, IUT of the University of Ngaoundere.
  • Moktar Garga, G.B. Tchaya, E. Tchoffo Houdji, B. Kaldambe Zoua, J.L. Nsouandele, M. Kamta, C.
    Kapseu. “Performance analysis of a hybrid dryer: Biomass – Indirect Solar Dryer (BISD) for drying
    Page 4 sur 5 guava (Psidium guajava)”. LOREXP-2021 International Conference, from April 20 to 23, 2021, IUT
    of the University of Ngaoundere
  • J.B. Bidias, G.B. Tchaya, E. Tchoffo Houdji, Ndougou, J.L. Nsouandele, C. Kapseu3, M. Kamta,
    “Regulation of temperature to improve solar PVT collector for indirect solar dryer (ISD)”.
    LOREXP-2021 International Conference, from April 20 to 23, 2021, IUT of the University of Ngaoundere
  • E. Tchoffo Houdji, D. Yamegueu, M. Kamta, Haman Djalo, G.J.Kayem, “Influence of the irradiance
    on the power quality parameters of a PV / battery system powering an induction motor”, ANSOLE
    DAYS 2018 & ANSOLECAM 2018 September 2nd-6th 2018, “Centre Polyvalent de Formation”,Mbouo-Bandjoun, Cameroon
  • E. Tchoffo Houdji, D. Yamegueu, M. Kamta, Haman Djalo, G.J.Kayem, “Power quality analysis of
    a standalone photovoltaic system feeding a controlled induction motor of a grain mill”. Sustainable
    Energetics for Africa (SE4A)“ School 2, 31.07-04.08.2017, Yaounde&Buea, Cameroon
  • Dandoussou A., Kamta M., Tchoffo Houdji E., Late B. « Improvement of the yield of a photovoltaic
    system by the approach based on the electrical load parameters » ANSOLE DAYS 2012 (17-19
    February 2012), University of Yaounde 1, Yaounde Cameroon
  • ) Tchaya Guy B.; Tchoffo Houdji E.; Kamta M., Kapseu C., “Séchage de la patate au séchoir solaire
    indirect avec régulation de température”, 3 ème édition des rencontres biannuelles du Consortium
    EG@, 14-17 septembre 2010, Yaoundé, Cameroun.
  • Tchaya Guy B.; Tchoffo Houdji E.; Kamta M., Haman-Djalo, Kapseu C., « Improvement of an
    indirect solar dryer by the temperature control », XI World Renewable Energy Congress, September
    25-30, 2010, Abu Dhabi.
  • E. Tchoffo Houdji, S.S. Zékeng, and S. Domngang, “The influence of interatomic potential on the order/disorder phase transition in binary alloys” 1 ère édition des rencontres biannuelles du Consortium EG@, 23 au24 Mai 2006, Yaoundé, Cameroun.

Work/Research Experience:

Since October 2023: Head of Department, Department of Renewable Energy at the Advanced School of Mines Processing and Energy Resources(ESTM), The University of Bertoua, Cameroon.

Since December 2020: Senior Lecturer, Department of Renewable Energy at the National Advanced School of Engineering of Maroua, University of Maroua/Cameroon.

January 2010 – November 2020: Assistant Lecturer, Department of Renewable Energy at the National Advanced School of Engineering of Maroua, University of Maroua/Cameroon.

  • Subjects taught include Geometrical optics, Electrostatic, Basics of electronics and electronics
    practicals, Power electronic, Basics of electrotechnic, Electrical machine, Power electronic and
    electrotechnic practicals, photovoltaic solar energy teaching and practics.

2007 – 2009: Head of the GCE national exam board at the Ngaoundéré examination Center.

May 2004 – Dec. 2009: High School Teacher of Physics and chemistry at the Government Bilingual High School of Ngaoundéré/Cameroon

  • Activities involved are: presentation of materials to students, Practicals, assignments marking and
    technological design and applications to real-life situations (both chemistry and Physics).

Dynamic Material Behavior

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Introduction of Dynamic materials behavior:

Dynamic material behavior research is a branch of materials science and mechanics that focuses on understanding how materials respond to rapid and dynamic loading conditions. These conditions often involve high strain rates, shock waves, and intense pressures. This field is crucial for various applications, including designing materials for defense, aerospace, impact-resistant structures, and advanced manufacturing processes.
High Strain Rate Testing:
 Researchers in this subtopic develop experimental techniques to study how materials behave under rapid deformation. Understanding how materials respond at high strain rates is essential for designing protective gear, vehicle armor, and aerospace components.
Shock Wave Propagation:
Investigating the behavior of materials when subjected to shock waves, such as those generated by explosives or impacts. This subfield is important for designing blast-resistant materials and studying meteorite impacts
Dynamic Fracture Mechanics:
Studying how materials fracture and fail under dynamic loading conditions, which is crucial for designing reliable structures and components that may experience sudden impacts or explosive forces..
Materials for Additive Manufacturing:
Researching how materials behave during the additive manufacturing process, especially under the rapid heating and cooling cycles inherent to 3D printing. Understanding dynamic material behavior in this context is essential for improving the quality and performance of 3D-printed parts..
Dynamic Response of Polymers:
Investigating the unique behavior of polymers and elastomers under dynamic loading conditions, with applications in shock absorption, automotive safety, and consumer products.