Temas de Interés:

• Modelización de la fatiga en estructuras metálicas
• Inducción electromagnética y termografía aplicadas a la detección de fisuras en estructuras de acero
• Aplicaciones de las ecuaciones diferenciales ordinarias a la industria
• Optimización no lineal

Recorrido:

• 2021–actualmente: Profesor invitado. Facultad de ingeniería mecánica. Universidad de Gifu. Japón
• 2007–actualmente: Investigador en el Instituto de Estructuras Metálicas y Ligeras. Karlsruhe Institute of Technology (KIT). Karlsruhe, Alemania
• 2018: Dr.-Ing. Karlsruhe Institute of Technology (KIT). Karlsruhe, Alemania
• 2003–actualmente: Consultor en aplicaciones industriales de matemáticas y diseño de software. Karlsruhe, Alemania
• 2003: M.Sc. en Tecnomatemáticas: “Modelización matemática y cálculo científico”. TU Kaiserslautern. Kaiserslautern, Alemania
• 2000: Ingeniero Matemático. Escuela Politécnica Nacional. Quito, Ecuador

Publicaciones:

• P. D. Toasa Caiza, D. Shiozawa, T. Ummenhofer, and T. Sakagami, “Real time detection of fatigue cracks on steel structures by applying square wave induction,” Engineering Failure Analysis, vol. 166, p. 108799, 2024. https://doi.org/10.1016/j.engfailanal.2024.108799
  
  
• P. D. Toasa Caiza, “Some mathematical and geometrical interpretations of the Sator Square,” Recreational Mathematics Magazine - InPress, 2024.https://doi.org/10.48550/arXiv.2404.01048
  
  
• Uematsu, Y.; Ozeki, Y.; Toasa Caiza, P. D. Tensile-shear properties of steel-Al adhesively bonded dissimilar joints and the effect of Al plate thickness. Scientific Reports, 13 (1), Art.-Nr.: 19819 (2023). https://www.nature.com/articles/s41598-023-47072-1.
  
  
• Paul Dario Toasa Caiza, Yoshihiko Uematsu. Analysis and modeling of the strain distribution and evolution during a fatigue test in ULCF and LCF on a friction stir welded specimen from steel and aluminum. Applications in Engineering Science, Volume 15, 2023, 100131, ISSN 2666-4968, https://doi.org/10.1016/j.apples.2023.100131.
  
  
• Sire, S., Toasa Caiza, P.D., Espion, B., Ragueneau, M. (2022). Contribution to the Study of the Fatigue of Riveted Joints, Influence of the Material and of the Stress Ratio. In: Lesiuk, G., Duda, S., Correia, J.A.F.O., De Jesus, A.M.P. (eds) Fatigue and Fracture of Materials and Structures. Structural Integrity, vol 24. Springer, Cham. https://doi.org/10.1007/978-3-030-97822-8_43
  
  
• Paul Dario Toasa Caiza, Stéphane Sire, Thomas Ummenhofer, Yoshihiko Uematsu. Full and partial compression fatigue tests on welded specimens of steel St 52-3. Effects of the stress ratio on the probabilistic fatigue life estimation, Applications in Engineering Science, Volume 10, 2022, 100091, ISSN 2666-4968, https://doi.org/10.1016/j.apples.2022.100091.
  
  
• Uematsu, Y., Kakiuchi, T., Niimi, K., Toasa Caiza P.D. et al. Local strain analysis under quasi-static tensile loading in Al/steel dissimilar friction stir weld by a digital image correlation method. Int J Adv Manuf Technol 120, 349–360 (2022). https://doi.org/10.1007/s00170-021-08481-6.
  
  
• Toasa Caiza, PD, Sire, S, Ummenhofer, T, Uematsu, Y. Low cost estimation of Wöhler and Goodman–Haigh curves of Ti-6Al-4V samples by considering the stress ratio effect. Fatigue Fract Eng Mater Struct. 2021; 1- 10. doi:10.1111/ffe.13607
  
  
• Paul Dario Toasa Caiza, Rüdiger Schwendemann, Paola Calero and Thomas Ummenhofer. Portable Generator to Detect Cracks on Large Steel Structures: An Application of Inductive Thermography. J Nondestruct Eval 40, 63 (2021). https://doi.org/10.1007/s10921-021-00795-5.
  
  
• Paul Dario Toasa Caiza, Thomas Ummenhofer, José Antonio Correia and Abilio de Jesus. Applying the Weibull and Stüssi Methods that Derive Reliable Wöhler Curves to Historical German Bridges. Practice Periodical on Structural Design and Construction. 2020. DOI: 10.1061/(ASCE)SC.1943-5576.0000506.
  
  
• Paul Dario Toasa Caiza, Thomas Ummenhofer. Probabilistic relationships between strain range, stress range and loading cycles. Application on ASTM A969 steel. International Journal of Fatigue, 137, 105626, 2020.
  
  
• Paul Dario Toasa Caiza. Consideration of runouts in the evaluation of fatigue experiments. (Berichte zum Stahl- und Leichtbau, 8). ISBN: 9783731509004. KIT Scientific Publishing, Karlsruhe, 2019.
  
  
• Paul Dario Toasa Caiza, Thomas Ummenhofer. A probabilistic Stüssi function for modelling the S-N curves and its application on specimens made of steel S355J2+N. International Journal of Fatigue, 117, 121–134, 2018.
  
  
• Paul Dario Toasa Caiza, Thomas Ummenhofer. Consideration of the runouts and their subsequent retests into S-N curves modelling based on a three-parameter Weibull distribution. International Journal of Fatigue, 106, 70-80, 2018.
  
  
• Paul Dario Toasa Caiza and Thomas Ummenhofer. Lock-in thermography applied to real time crack detection in constructional steelwork. Advanced Infrared Technology and Applications, Atti della Fondazione ‘Giorgio Ronchi’, September 2015.
  
  
• Paul Dario Toasa Caiza, Thomas Ummenhofer. General probability weighted moments for the three-parameter Weibull Distribution and their application in S–N curves modelling. International Journal of Fatigue, 33(12), 1533-1538, 2011.
  
  
• Paul Dario Toasa Caiza. Energy management in hybrid vehicles applying optimal control and powertrain models. Master Thesis, TU Kaiserslautern, 2003.
  
  
• Chris Budd, Mark Peletier, Gerrtje Hek, David Iron, Andre Leger, Edi Cahyono, Ignacio Guerra, Paul Dario Toasa Caiza, and JF Williams. The artis problem. 42^nd European Study Group with Industry, 2002.