ACADEMIC AND ADMINISTRATIVE POSTS HELD AT DIT
- Professor in Mechanical Engineering June 2010 - To-date.
- Director of Studies June 2010 - To-date.
EXPERIENCE
2008 - 2010 Deputy Director, Quality Assurance Bureau (QAB), University of Dar es Salaam, Tanzania.
1999 - 2010 Senior Lecturer in Engineering Materials, University of Dar es Salaam, Tanzania.
2006 - 2008 Head, Materials Technology and Mechanics Laboratories, Department of Engineering Materials, University of Dar es Salaam, Tanzania.
2001 - 2008 Coordinator, Research and Publications (RP), Department of Engineering Materials, University of Dar es Salaam, Tanzania.
2001 - 2008 Coordinator, Postgraduate Studies (PGS), Department of Engineering Materials, University of Dar es Salaam, Tanzania.
2001 - 2006 Head, Central Technical Services (CTS) Department at the College of Engineering and Technology (CoET), University of Dar es Salaam, Tanzania.
1994 - 1997 Research Assistant in Metallurgy and Materials at the University of Birmingham, United Kingdom.
1991 - 1999 Lecturer in Mechanical Engineering, University of Dar es Salaam, Tanzania.
1988 - 1991 Assistant Lecturer in Mechanical Engineering, University of Dar es Salaam, Tanzania.
1987 - 1989 Teaching Assistant and Research Engineer in Mechanical Engineering at Queen’s University, Canada.
1986 - 1988 Tutorial Assistant in Mechanical Engineering, University of Dar es Salaam, Tanzania.
RESEARCH INTERESTS
- Casting technologies for the production of reliable aluminium alloy castings.
- Fracture and fatigue studies of conventional materials.
- Development and characterisation of plant based composite materials.
COURSES TAUGHT AND POSTGRADUATE SUPERVISION
Courses Taught in Undergraduate Degree Programmes, University of Dar es Salaam
EG 101 Engineering Drawing for 1st year students 1992 – 1993
ME 106 Strength of Materials I for 1st year students 2005
ME 112 Testing of Materials for 1st year students 2001, 2002, 2007 – 2010
ME 116 Structure and Transformation of Materials for 1st year students 2001 – 2010
ME 202 Machine Elements and Design for 2nd year students 1990 – 1991 and 1998 – 2001
ME 206 Strength of Materials II for 2nd year students 2001 – 2006
ME 211 Metals and Non-metallic Materials for 2nd year students 2001
ME 216 Materials Technology for 2nd year students 1999 – 2000
ME 306 Solid Mechanics for 3rd year students 2003 – 2004
Completed Theses and Dissertations Supervised
2006 Ndazi, B.S. "Effects of Rice Husks Modifications on the Performance of Particleboards," Ph.D. Thesis, The University of Dar es Salaam, Tanzania.
2009 Ezekiel, N. "Structure and Properties of Coir Fibres for Composites," M.Sc. (Dissertation) part of Masters in Chemical Science and Engineering Degree Programme, Royal Institute of Technology (KTH) Sweden / University of Dar es Salaam, Tanzania.
Ongoing Research Degree Programmes Supervised
- Lugoye, M.N. "Influence of Tannin and Cashew Nut Shell Liquid Based Resins on Performance of Bamboo Based Composite Panels," Ph.D. Degree Programme, University of Dar es Salaam, Tanzania.
- Msemwa, P.B. "The Performance of Sisal Fibres Reinforced Cashew Nut Shell Liquid Derivative-Based Composites", Ph.D. Degree Programme, University of Dar es Salaam, Tanzania.
AWARDS
- American Foundrymen's Society (2000), The 2000 Howard F. Taylor Award on the best paper "Effect of Mould Filling Turbulence on Fatigue Properties of Cast Aluminium Alloys" honoured to C. Nyahumwa for its quality and technical significance to the Cast Metals Industry.
- American Foundrymen's Society (1998/1999), Aluminium Division, Best Paper Award "Effect of Mould Filling Turbulence on Fatigue Properties of Cast Aluminium Alloys" presented to C. Nyahumwa as recognition for outstanding contribution to the advancement of the foundry industry.
PUBLICATIONS
Papers in Refereed Journals
B. S. Ndazi, C. Nyahumwa, and J.V. Tesha, "Chemical and Thermal Stability of Rice Husks against Alkali Treatment," BioResources 3(4), (2008), pp. 1267 - 1277.
C. Nyahumwa, "Damage Tolerance Analysis for Al-7Si-Mg Alloy Castings with Oxide Film Defects," Kenya Journal of Mechanical Engineering (KJME) Vol. 3, No.1, (April 2007), pp. 1 - 20.
B.S. Ndazi, S Karlsson, J.V. Tesha, and C.W. Nyahumwa, "Chemical and Physical Modifications of Rice Husks for Use as Composite Panels," Composites Part A: Applied Science and Manufacturing, 38 (2007), pp. 925 – 935.
C. Nyahumwa, "Effectiveness of Hot Isostatic Pressing on Healing Oxide Film Defects in Cast Aluminium Alloys," Tanzania Journal of Engineering and Technology (TJET) Vol. 1, No.1, (2006), pp. 43 - 58.
C. Nyahumwa, "Multiple Defect Distributions on Weibull Statistical Analysis of Fatigue Life of Cast Aluminium Alloys," African Journal of Science and Technology (AJST) Vol. 6, No. 2 (2005), pp. 43 – 54.
C. Nyahumwa, N.R. Green, and J. Campbell, "Latente Vermoeiingssterkte Van Gietlegeringen," Gietwek Perspectief, Jaargang 22 Nummer 5, (2002), pp. 19 – 25.
C. Nyahumwa, N.R. Green, and J. Campbell, "Influence of Casting Technique and Hot Isostatic Pressing on the Fatigue of an Al-7Si-Mg Alloy," Metallurgical and Materials Transactions A, Vol. 32A, (2001), pp. 349 – 358.
C. Nyahumwa, “Statistical Methods in Fatigue Life Data Analysis of Al-7Si-Mg Alloy Castings”, Tanzania Engineer Journal Vol. 6 No. 4 (1999), pp. 13 – 23.
C. Nyahumwa, N.R. Green, and J. Campbell, "The Concept of the Fatigue Potential of Cast Alloys," J. of the Mechanical Behavior of Materials, Vol. 9, No. 4, (1998), pp. 227 – 235.
C. Nyahumwa, N.R. Green, and J. Campbell, “Effect of Mould-Filling Turbulence on Fatigue Properties of Cast Aluminium Alloys,” American Foundrymen Society (AFS) Transactions, (1998), Paper No. 98-058, pp. 215 – 223.
C. Nyahumwa, "The Evolution of a Cantilever Sensor to Measure Normal and Frictional Forces in the Roll Gap during Cold Rolling," J. of Materials Processing Technology, 56 (1996), pp. 463 – 474.
J. Jeswiet and C. Nyahumwa, "A Sensor for Measuring Metal Deformation Interface Forces," J. of Materials Processing Technology, 39 (1993), pp. 251 – 268.
C. Nyahumwa and J. Jeswiet, "A Friction Sensor for Sheet-Metal Rolling," Annals of the CIRP, 40 (1) (1991), pp. 231 – 233.
Papers in Refereed Proceedings of International Conferences
M. Lugoye, J.V. Tesha, C.W. Nyahumwa and S. Karlsson, "Possibility of Using Arundinaria Alpina Bamboo Panel Boards for Interior Applications," Proceedings of the International Panel Products Symposium (IPPS) 2009, Nandes, France (16th to 18th September, 2009).
P.B. Msemwa, L.Y. Mwaikambo, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Tensile Properties of Sisal Fibre Reinforced Cashew Nut Shell Liquid Composites," Proceedings of the 20th Australasian Conference on the Mechanics of Structures and Materials (ACMSM20) 2008, Toowoomba, Australia (2nd to 5th December, 2008) ISBN: 978-0-415-49196-9, pp. 323 – 327.
M. Lugoye, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Properties of Bamboo Panel Boards Treated by NaOH," Proceedings of the International Panel Products Symposium (IPPS) 2008, Espoo, Finland (24th to 26th October, 2008) ISBN: 978-1-84220-113-8, pp. 285 - 292.
M. Lugoye, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Potential and Limitations of Arundinaria Alpina Bamboo Panel Boards for Structural Applications," Proceedings of the 3rd International Conference on Environmentally – Compatible Forest Products, ECOWOODS 2008, Porto, Portugal (10th to 12th September, 2008) ISSN: 978-989-643-016-0, pp. 333 - 337.
P.B. Msemwa, J.V. Tesha, C. Nyahumwa and L.Y. Mwaikambo, "The Performance of Sisal Fibres Reinforced CNSL-Based Composite Panels," Proceedings of the International Panel Products Symposium (IPPS) 2007, Cardiff, Wales, United Kingdom (17th to 19th October, 2007) ISBN: 978-1-84220-097-1, pp. 303 - 310.
M. Lugoye, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Degradation Behaviour and Thermal Stability of WT, UF and PF Bonded Bamboo Boards in Soil and Open Air," Proceedings of the International Panel Products Symposium (IPPS) 2007, Cardiff, Wales, United Kingdom (17th to 19th October, 2007) ISBN: 978-1-84220-097-1, pp. 311 - 318.
P.B. Msemwa, L.Y. Mwaikambo, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Mechanical Properties of Sisal Fibres Tested Using Dynamic Mechanical Thermal Analyser," Proceedings of Brazilian Conference on Non-Conventional Materials and Technologies: Materials and Technologies for Sustainable Constructions, BRAZIL NOCMAT 2006, Salvador, Brazil (29th October to 1st November, 2006) ISBN: 85-9873-5, pp. 1 – 8.
B.S. Ndazi, C. Nyahumwa, J.V. Tesha, and S. Karlsson, "Effect of Rice Husks Modifications on Water Absorption Resistance of Rice Husk Based Panels," Proceedings of the Tenth European Panel Products Symposium, Llandudno, Wales, United Kingdom (October, 11th to 13th 2006) ISBN: 184 220 094 1, pp. 279 – 286.
B. Ndazi, J. Tesha, C. Nyahumwa and S. Karlsson, "Effects of Steam Curing and Alkali Treatment on Properties of Rice Husks," Proceedings of Inter American Conference on Non-Conventional Materials and Technologies in Ecological and Sustainable Construction, IAC-NOCMAT 2005, Rio de Janeiro, Brazil (November, 11th to 15th 2005) ISBN: 85-98073-06-7, pp. 09 – 20.
M. Lugoye, J. Tesha, C. Nyahumwa and S. Karlsson, "Chemical Characteristics of Tanzanian Bamboo Species for Composite Panel Boards," Proceedings of Inter American Conference on Non-Conventional Materials and Technologies in Ecological and Sustainable Construction, IAC-NOCMAT 2005, Rio de Janeiro, Brazil (November, 11th to 15th 2005) ISBN: 85-98073-06-7, pp. 244 – 256.
B. Ndazi, J. Tesha, C. Nyahumwa and S. Karlsson, "Effectiveness of Steam and Alkali Treatments of Rice Husks on Mechanical Properties of Particleboards," Proceedings of the Ninth European Panel Products Symposium, Llandudno, Wales, United Kingdom (October 5th to 7th 2005) ISBN: 184 220 085 2, pp. 211 – 223.
M.N. Lugoye, J.V. Tesha, C. Nyahumwa and S. Karlsson, "Mechanical Properties of Tanzanian Bamboo Panel Boards Bonded with Hydrolysed Tannin," Proceedings of the Ninth European Panel Products Symposium, Llandudno, Wales, United Kingdom (October 5th to 7th 2005) ISBN: 184 220 085 2, pp. 261 – 268.
B.S. Ndazi, S Karlsson, J.V. Tesha, and C.W. Nyahumwa, "Properties and Performance of Treated Rice Husks in the Composite Panels," Proceedings of the One-day Technical Symposium and the Third Meeting of the Eastern Africa Materials Research Society (EAMRS), University of Dar es Salaam, Dar es Salaam, Tanzania (July 15th to 16th 2004) ISBN: 9776 60 409 2, pp. 20 – 22.
J.V. Tesha, S. Machibya, B.S. Ndazi, M.N. Lugoye, C.W. Nyahumwa, and S. Karlsson, "Oxidative Polymerization of Cashew Nut Shell Liquid by Side Chain Cleavage," Proceedings of the 2nd International Conference of the African Materials Research Society, University of the Witwaterstrand, Johannesburg, South Africa (December 8th to 11th 2003) ISBN: 0-620-31513-X, pp 50.
B.S. Ndazi, J.V. Tesha, C.W. Nyahumwa, and S. Karlsson, "Compressibility and Stress Relaxation Characteristics of Rice Husks," Proceedings of the 2nd International Conference of the African Materials Research Society, University of the Witwaterstrand, Johannesburg, South Africa (December 8th to 11th 2003) ISBN: 0-620-31513-X, pp 117.
Research Reports
B.B. Nyichomba and C.W.M. Nyahumwa, “Import Substitution on Machinery Spare Parts Through Local Manufacturing in Tanzania,” Research Report No. FoE/ME/RR/26/01, A reseach report submitted to the Faculty of Engineering, University of Dar es Salaam, 2001. |
Center of Supercomputing