Publications

Journal papers:

  • C. Scheffer and P.S. Heyns "Wear monitoring in turning operations using vibration and strain measurements" Mechanical Systems and Signal Processing, Vol. 15 (6), p.1185-1202, 2001.
  • C. Scheffer and P.S. Heyns "Masjiengereedskap toestandsmonitering en optimering van masjineringsprosesse - 'n oorsig" Die Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie, Vol. 20 (2), p. 35 – 44, 2001.
  • C. Scheffer, H.H. Kratz, P.S. Heyns and F. Klocke, "Development of a tool wear monitoring system for hard turning" International Journal of Machine Tools & Manufacture, Vol. 43, p. 973-985, 2003.
  • C. Scheffer and P.S. Heyns "An industrial tool wear monitoring system for interrupted turning" Mechanical Systems and Signal Processing, Vol. 18, p. 1219-1242, 2004.
  • C. Scheffer, H. Engelbrecht and P.S. Heyns "A comparative evaluation of Neural Networks and Hidden Markov Models for monitoring turning tool wear". Neural Computing and Applications, Vol. 14 (4), p. 325-336, 2005.
  • C. Scheffer and A.H. Basson, "A simulation model to improve pneumatic intensifier performance and reliability", Journal of the South African Institute of Mining and Metallurgy, Vol. 105 (4), p. 265-274, 2005.
  • De Vos JP, Blanckenberg MM, "Automated Pediatric Cardiac Auscultation", IEEE Transactions on Biomedical Engineering, vol. 54(2), pp. 244-252 ,2007.
  • D.A. Frew, C. Scheffer, "Numerical modeling of a high-speed rigid rotor in a single aerostatic bearing using modified Euler equations of motion", Mechanical Systems and Signal Processing, Vol. 22 (1), p. 133-154, 2008.
  • I. Giouroudi, J. Kosel and C. Scheffer, "BioMEMS in diagnostics: a review and recent developments", Recent Patents on Engineering, Vol. 2 (2), pp. 114-121, 2008.
  • I. Giouroudi, J. Kosel and C. Scheffer, "Recent Developments and Patents on Thin Film Technology", Recent Patents on Materials Science, Vol. 1(3), p. 200-208, 2008.
  • J.H. Müller, C. Scheffer, A. Elvin, "In-vivo Detection of Patellar Tendon Creep using a Fibre-optic Sensor", International Journal of Medical Engineering and Informatics, Vol. 1(2), p. 155-173, 2008.
  • C.U. de Jongh, C. Scheffer and A.H. Basson, "Predictive modelling of cervical disc implant wear", Journal of Biomechanics, Vol. 41(15), p. 3177-3183, 2008.
  • S. Van Niekerk, Q. Louw, K. Vaugh, K. Grimmer-Somers and K. Schreve, "Photographic measurement of upper-body sitting posture of high school students: A reliability and validity study", BMC Musculosceletal Disorders, 9(113), 2008
  • E.M. Dillon, J.H. Müller, C. Scheffer and R. De Villiers, "Differential forces within the proximal patellar tendon as an explanation for the characteristic lesion of patellar tendinopathy", American Journal of Sports Medicine, Vol. 36(11), p. 2119-2127, 2008.
  • J.E. Schoevers, C. Scheffer and R. Dippenaar, “Low Oxygen Saturation Quantification in Human Arterial and Venous Circulation”, IEEE Transactions on Biomedical Engineering, Vol. 56(3), p. 846-854, 2009.
  • A.C. Busch, C. Scheffer and A.H. Basson, "Development and testing of a prototype reflex measurement system employing artificial neural networks", Computer Methods and Programs in Biomedicine, Vol. 94, p. 15-25, 2009.
  • D.J. Van Den Heever, K. Schreve and C. Scheffer, "Tactile Sensing using Force Sensing Resistors and a Super Resolution Algorithm", IEEE Sensors Journal, Vol. 9(1), p. 29-35, 2009.
  • I. Giouroudi, J. Kosel and C Scheffer, "Evaluation of CoFeSiB microwires for biomechanical stress studies", Sensor Letters, Vol. 7, p. 1-5, 2009.
  • N.G. Elvin, A.A. Elvin, C. Scheffer, S.P. Arnoczky, E.M. Dillon, P.J. Erasmus, "A preliminary study of patellar tendon torques during jumping", Journal of Applied Biomechanics, Vol. 25, p. 360 – 368, 2009.
  • C. Visagie, C. Scheffer, W.W. Lubbe, A. Doubell, "Autonomous detection of heart sound abnormalities using an auscultation jacket", Australasian Physical & Engineering Sciences in Medicine, Vol. 34(4), p. 240 – 250, 2009.
  • J. Uziak, M.T. Oladiran, M. Eisenberg & C. Scheffer, "International Team Approach to Project Oriented Problem Based Learning in Design", World Transactions on Engineering & Technology Education (WTE&TE), Vol. 8(2), p 137 – 144, 2010.
  • J. Kosel, C. Scheffer, I. Giouroudi, E. Dillon and P. Erasmus, "Anatomical study of the radius and centre of curvature of the distal femoral condyle", Journal of Biomechanical Engineering, Vol. 132 (9), p. 091002.1-6, 2010.
  • J.S.F. Botha, C. Scheffer, W.W. Lubbe and A.F. Doubell, "Autonomous auscultation of the human heart employing a precordial electro-phonocardiogram and ensemble empirical mode decomposition", Australasian Physical & Engineering Sciences in Medicine, Vol. 33, p. 171 – 183, 2010.
  • T. Terblanche, G-J van Rooyen and C. Scheffer, "Estimation of heart rate from an apnoea detection device using matched filtering", International Journal of Medical Engineering and Informatics, Vol. 2(3), p. 273 – 288, 2010.
  • P-J Christiane, K. Schreve and C. Scheffer, "Design of a Manipulator for Minimally Invasive Surgery Procedures", R&D Journal of the South African Institution of Mechanical Engineering, Vol. 26, p. 27 – 33, 2010.
  • A. D. Zarrabi, J. P. Conradie, C. F. Heyns, C. Scheffer and K. Schreve, "Development of a Computer Assisted Gantry System for Gaining Rapid and Accurate Calyceal Access during Percutaneous Nephrolithotomy", International Braz J Urol, Vol. 36(6), p. 738-748, 2010.
  • D.J. Van Den Heever, C. Scheffer, P. Erasmus and E. Dillon, "Contact stresses in a patient-specific unicompartmental knee replacement", Clinical Biomechanics, Vol. 26, p. 159 – 166, 2011.
  • A.N. Smuts, D.C. Blaine, C. Scheffer, H. Weich, A.F. Doubell, K.H. Dellimore, "Application of finite element analysis for the design of tissue leaflets for a percutaneous aortic valve", Journal of the Mechanical Behavior of Biomedical Materials, Vol. 4, p. 85 – 98, 2011.
  • J-P. Conradie, C. Scheffer, K. Schreve and A. Zarrabi, "Semi-Autonomous Needle-Positioning Device for Percutaneous Nephrolithotomy Procedures", Journal of Mechanics in Medicine and Biology, Vol. 11, p. 177 – 203, 2011.
  • D. Van Den Heever, C. Scheffer, P. Erasmus and E. Dillon, "Method for selection of femoral component in total knee arthroplasty (tka)", Australasian Physical & Engineering Sciences in Medicine, Vol. 34, p. 23 – 30, 2011.
  • M.T. Oladiran, J. Uziak, M. Eisenberg and C. Scheffer, "Global Engineering Teams - A Programme promoting Teamwork in Engineering Design and Manufacturing", European Journal of Engineering Education, Vol. 36, p. 173 – 186, 2011.
  • J. Cockcroft and C. Scheffer, "Determining the feasibility of measuring outdoor road cycling kinematics using inertial motion capture technology", SAIEE Africa Research Journal, Vo. 102, p. 31 – 39, 2011.
  • G. Cloete, K.H. Dellimore, C. Scheffer, S. Smuts and L. Wallis, "The impact of backboard size and orientation on sternum-to-spine compression depth and compression stiffness in a manikin study of CPR using two mattress types", Resuscitation, Vol. 82, p. 1064 – 1070, 2011.
  • K.H. Dellimore, G. Cloete, and C. Scheffer, "Towards optimum chest compression performance during constant peak displacement cardiopulmonary resuscitation", Medical & Biological Engineering & Computing, Vol. 49(9), p. 1057 – 1065, 2011.
  • D.J. Van Den Heever, C. Scheffer, P.J. Erasmus and E.M. Dillon, "Mathematical reconstruction of human femoral condyles", Journal of Biomechanical Engineering, Vol. 133 (6), p. 064504, 2011.
  • G. Cloete, K.H. Dellimore and C. Scheffer, "Comparison of Experimental Chest Compression Data to a Theoretical Model for the Mechanics of Constant Peak Displacement Cardiopulmonary Resuscitation", Academic Emergency Medicine, Vol. 18, p 1167 – 1176, 2011.
  • J.H. Muller, C. Scheffer, A. Elvin, P.J. Erasmus and E.M. Dillon, "Patella tracking with peripatellar soft tissue stabilizers as a function of dynamic subject-specific knee flexion", Journal of Mechanics in Medicine and Biology, Vol. 11 (5), p. 1025 – 1043, 2011.
  • A. Esterhuyse, K. Van Der Westhuizen, A.F. Doubell, H. Weich, C. Scheffer and K.H. Dellimore, "Application of the finite element method to the fatigue life prediction of a stent for a percutaneous heart valve", Journal of Mechanics in Medicine and Biology, published online DOI: 10.1142/S021951941200448X.
  • C. Scheffer and T. Cloete, "Inertial motion capture in conjunction with an artificial neural network can differentiate the gait patterns of hemiparetic stroke patients compared to able-bodied counterparts", Computer Methods in Biomechanics and Biomedical Engineering, Vol. 15(3), p. 285 – 294, 2012.
  • K.H.J. Van Aswegen, A.A. Groenwold, A.N. Smuts, C. Scheffer, H. Weich and AFD Doubell, "Investigation of leaflet geometry in a percutaneous aortic valve with the use of fluid-structure interaction simulation", Journal of Mechanics in Medicine and Biology, in press, published online DOI: 10.1142/S0219519411004538.
  • D.J. Van Den Heever, C. Scheffer, P.J. Erasmus and E.M. Dillon, "Classification of gender and race in the distal femur using self organising maps", The Knee, in press, DOI: 10.1016/j.knee.2011.06.009.

    • Patents:

  • PCT international patent: "A method for positioning an instrument", Inventors: J. Conradie, C. Scheffer, A.D. Zarrabi and K. Schreve. PCT/IB2010/000410.
  • PCT international patent: "Vital signs monitoring system and components thereof", Inventors: A. Rademeyer, C. Scheffer, G. Winkler and M. Blanckenberg. PCT/IB/2010/000523.
  • PCT international patent: "A heart valve" Inventors: C. Scheffer, H. Weich, A.N. Smuts, A. Esterhuyse, K. Van Aswegen, A. Groenwold, D.C. Blaine and K. Van Der Westhuizen. PCT/IB2010/00398.
  • PCT international patent: "A method of designing a knee prosthesis", Inventors: D.J. Van Den Heever, C. Scheffer, E.M. Dillon and P.J. Erasmus. PCT/IB/2010/001218.
  • South African provisional patent no. 2011/01310: "Laryngoscope and laryngoscope blades". Inventors P.R. Fourie, C. Scheffer and J. Van Der Merwe. Date of filing: 18 February 2011.
  • South African provisional patent no. 2011/01427: "Intravenous blood oxygenator". Inventors P.R. Fourie, C. Scheffer and W. Elson. Date of filing: 23 February 2011.
  • South African provisional patent no. No: 2011/01384: "Position sensing catheter". Inventors P.R. Fourie, C. Scheffer and P. Schwartz. Date of filing: 22 February 2011.