ACTIVITATEA PROFESIONALĂ

Prof.dr.ing. Dan Mihai Constantinescu profesor la Universitatea Naţională de Ştiinţă şi Tehnologie POLITEHNICA Bucureşti, Facultatea de Inginerie Industrială şi Robotică, Departamentul Rezistenţa Materialelor

Web of Science ResearcherID: C-4101-2012; https://orcid.org/0000-0001-5400-7804

Este în POLITEHNICA Bucureşti din anul 1985 îndeplinind, pe rând, fucţiile: asistent suplinitor (1986); asistent (1987); şef de lucrari (1992); conferenţiar (1999); profesor (2003) şi conducător de doctorat (2008).

A predat în Politehnică cursuri de Rezistenţa Materialelor, Metoda Elementelor Finite, Mecanica Ruperii, Durabilitatea Componentelor Structurale supuse la Solicitări Variabile, Mecanica Materialelor Moderne utilizate la autovehicule, Modelare şi Simulare. La Virginia Tech a predat cursuri de Statics, Mechanics of Materials, Introduction to Continuum Mechanics, Variational Methods in Engineering.

Desfăşoară cercetări experimentale şi numerice privind: fabricarea aditivă şi comportarea metamaterialelor, materiale compozite stratificate şi sandwich, propagarea deteriorărilor şi delaminărilor, comportarea la solicitati statice şi prin impact a aliajelor metalice usoare, a materiale ceramice şi a materialelor compozite, fabricarea şi încercarea nanocompozitelor cu nanotuburi din carbon, grafen şi nanopulberi.

A fost bursier Fulbright la Department of Engineering Science and Mechanics, Virginia Polytechnic Institute & State University, SUA (1991) şi bursier DAAD la Universitatea din Braunschweig, Germania (1999).

Contract de cercetare la Universitatea din Ljubljana (1992-1993) şi stagiu de cercetare efectuat cu sprijinul dat de National Research Council, Twinning Program Participants la Universitatea Lehigh, SUA (1995-1996).

A beneficiat de două stagii de cercetare în Programe ale Comisiei Europene la Aerospace and Space Materials Technology Testhouse (AMTT), Seibersdorf, Austria şi Deutsches Zentrum für Luft und Raumfahrt (DLR), Braunschweig, Germania (2003).

Cercetarea o desfăşoară ca şef al laboratoarelor: Modelarea şi simularea comportării şi deteriorării materialelor (din 2004) şi Mecanica ruperii şi oboseală (din 2007).

Este director al Centrului de Cercetări de Mecanică Aplicată (CMMA) din 2005.

Desfăsoară activitate de cercetare şi la Institutul de Mecanica Solidelor al Academiei Române ca cercetator ştiinţific I cu jumătate de normă.

A fost director general al Direcţiei Generale de Învaţamânt Superior, Ministerul Educaţiei şi Cercetarii (2006-2007), membru în Bologna Follow up Group (BFUG), şi membru în Boardul BFUG, director de departament (2020-2024).

Preşedinte al Comisiei 17, Inginerie mecanica, mecatronică şi robotică şi inginerie genistică şi de armament (2020-2024) şi în prezent membru al aceleiaşi comisii.

Este membru al Consiliului Şcolii Doctorale de Științe Inginerești, Mecanice, Calculatoare (SDSIMC) din Şcoala de Studii Avansate a Academiei Române (SCOSAAR) (2023-prezent).

Desfăsoară o bogată activitate de recenzor la peste 40 de reviste de specialitate internaţionale dintre care se menţionează: Engineering Fracture Mechanics, Theoretical and Applied Fracture Mechanics, Engineering Failure Analysis, Mechanics of Materials, International Journal of Solids and Structures, Materials & Design, Composite Structures, Engineering Structures, Composites B: Engineering, International Journal of Mechanical Sciences, International Journal of Impact Engineering, Journal of Sandwich Structures and Materials, International Journal of Mechanics and Materials in Design, Journal of Materials Engineering and Performance, Experimental Techniques, Materials Today Communications. Membru în comitetul editorial ştiinţific al revistelor: Fracture and Structural Integrity (Frattura ed Integrità Strutturale), Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, Romanian Journal of Technical Sciences – Applied Mechanics, Scientific Bulletin of University Politehnica, Series D: Mechanical Engineering.

A primit Premiul „Aurel Vlaicu“ al Academiei Române pentru anul 2019 (acordat în anul 2021), pentru grupul de lucrări: Mecanica materialelor compozite; autori: Dan Mihai Constantinescu și Ștefan Sorohan.

Responsabilităţile academic şi ştiinţifice sunt: vicepreşedinte al Asociaţiei Române de Mecanica Ruperii (2010-prezent); vicepreşedinte al Asociaţiei Române de Tensometrie şi Încercarea Materialelor (2011-prezent); reprezentantul României în Comitetul Ştiinţific al Societăţii Danubia-Adria de Mecanică Experimentală (2011-prezent).

Membru corespondent al Academiei de Ştiinţe Tehnice din România (din 2020)

CONTRACTE DE CERCETARE REPREZENTATIVE

– INFLUENCE OF LOADING FIXTURES AND SPECIMEN GEOMETRY ON STRESS INTENSITY FACTOR FIELDS, Sparta Inc., with Air Force Research Laboratory, 1999-2001

– DEVELOPMENT OF AN EXPERIMENTAL BASED RATIONALE FOR ANALYZING CRACKED SOLID ROCKET MOTOR INTEGRITY, P.0. #RPO10230 ERC Inc., with Air Force Research Laboratory, 2001-2002

– Programme of the European Commission, HPRI-CT-1999-00024/II-78; INTERLAMINAR FAILURE IN COMPOSITE MATERIALS, Aerospace and Space Materials Technology Testhouse, Seibersdorf, Austria, 2003

– Programme of the European Commission, contract HPRI-CT-2002-00184; COMPLEX LOADING EFFECT ON DAMAGE ACCUMULATION AND FATIGUE LIFE OF MULTIDIRECTIONAL FLAT AND CURVED PANELS, DLR, Braunschweig, Germany, 2003

– CNCSIS nr.23/2004: DESIGN AND TESTING OF MULTIFUNCTIONAL COMPOSITE LAMINATES AND SANDWICHES USED FOR ASSURING THE STRUCTURAL INTEGRITY OF STRUCTURES (director), 2004-2006

– CEEX 202/2006: MODELLING AND SIMULATION OF THE BEHAVIOUR OF COMPOSITE MATERIALS AT COMPLEX LOADINGS WITH APPLICATIONS IN AERONAUTICAL ENGINEERING –  MOSCOM (director), 2006-2008

– Project PN II 206/2012: HIGH PERFORMANCE LIGHTWEIGHT PANELS WITH A NEW OPTIMIZED DESIGN FOR ADVANCED AIRCRAFT STRUCTURES – HIPEAS (director), 2012-2014

– PN III, European and International Cooperation – Horizon 2020, M.ERA-NET 11/2015: FUNCTIONAL HIERARCHICAL COMPOSITES FOR STRUCTURAL APPLICATIONS – HIEROCOMP (responsabil), 2015-2018

– PN III, European and International Cooperation – Horizon 2020, M.ERA-NET 167/2020: REACTIVE INKJET PRINTING OF EPOXY THERMOSET COMPOSITES – RIPE4TEC (responsabil), 2020-2023, ripe4tec.upb.ro

PUBLICAŢII REPREZENTATIVE

– Miron M.C., Constantinescu D.M., Strain fields at an interface in a sandwich composite, Mechanics of Materials, vol. 43, pp. 870-884, https://doi.org/1016/j.mechmat.2011.10.002, 2011.

– Apostol D.A., Constantinescu D.M., Temperature and speed of testing influence on the densification and recovery of polyurethane foams, Mechanics of Time-Dependent Materials, vol.17, pp. 111-136, https://doi.org/1007/s11043-012-9179-8, 2013.

– Marşavina L., Constantinescu D.M., Linul E., Apostol D.A., Voiconi T., Sadowski, T., Refinements of fracture toughness of polyurethane foams, Engineering Fracture Mechanics, vol. 129, pp. 54-66, https://doi.org/11016/j.engfracmech.2013.12.006, 2014.

– Stuparu F.A., Constantinescu D.M., Apostol D.A., Sandu M., A Combined Cohesive Elements-XFEM Approach for Analyzing Crack Propagation in Bonded Joints, Journal of Adhesion, vol. 92, pp. 535-552, https://doi.org/1080/00218464.2015.1115355, 2016.

– Marsavina L., Constantinescu D.M., Linul E., Stuparu F.A., Apostol D.A., Experimental and numerical crack paths in PUR foams, Engineering Fracture Mechanics, vol. 167, pp. 68-83, https://doi.org/1016/10.1016/j.engfracmech.2016.03.043, 2016.

– Picu C.R., Sorohan Şt., Soare M.A., Constantinescu D.M., Towards designing composites with stochastic composition: Effect of fluctuations in local material properties, Mechanics of Materials, vol. 97, pp. 59-66, https://doi.org/1016/j.mechmat.2016.02.014, 2016.

– Stuparu F.A., Apostol D.A., Constantinescu D.M., Picu R.C., Sandu M., Sorohan Şt., Local evaluation of adhesive failure in similar and dissimilar single-lap joints, Engineering Fracture Mechanics, vol. 183, pp. 39-52, https://doi.org/1016/10.1016/j.engfracmech.2017.05.029, 2017.

– Sorohan Şt., Constantinescu D.M., Sandu M., Sandu A.G., On the homogenization of hexagonal honeycombs under axial and shear loading. Part I: Analytical formulation for free skin effect, Mechanics of Materials, vol. 119, pp. 74-91, https://doi.org/1016/j.mechmat.2017.09.003, 2018.

– Sorohan Şt., Constantinescu D.M., Sandu M., Sandu A.G., On the homogenization of hexagonal honeycombs under axial and shear loading. Part II: Comparison of free skin and rigid skin effects on effective core properties, Mechanics of Materials, vol. 119, pp. 92-108, https://doi.org/1016/j.mechmat.2017.09.004, 2018.

– Sorohan Şt., Constantinescu D.M., Sandu M., Sandu A.G., In-plane homogenization of commercial hexagonal honeycombs considering the cell wall curvature and adhesive layer influence, International Journal of Solids and Structures, vol. 156-157, pp. 87-106, https://doi.org/10.1016/ijsolstr.2018.08.007, 2019.

– Mocian O.A., Constantinescu D.M., Sandu M., Sorohan, Ș., Experimental evaluation of the response of sandwich panels in low-velocity impact, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, vol. 233(3), pp. 315-327, https://doi.org/10.1177/10.1177/1464420718798168, 2019.

– Picu C.R., Krawczyk K.K., Wang Z., Pishvazadeh-Moghaddam H., Sieberer M., Lassnig A., Kern W., Hadar A., Constantinescu D.M., Toughening in nanosilica-reinforced epoxy with tunable filler-matrix interface properties, Composites Science and Technology, vol. 183, 107799, https://doi.org/1016/j.compscitech.2019.107799, 2019.

– Constantinescu D.M., Apostol, D.A., Performance and efficiency of polyurethane foams under the influence of temperature and strain rate variation, Journal of Materials Engineering and Performance, vol. 29, pp. 3016–3029, https://doi.org/10.1007/s11665-020-04860-4, 2020.

– Indreș A.I., Constantinescu D.M., Mocian O.A., Sorohan Șt, Particularities on the Low-Velocity Impact Behavior of 3D-Printed Sandwich Panels with Re-Entrant and Honeycomb Core Topologies, Journal of Composites Science, 8, 426, https://doi.org/10.3390/jcs8100426, 2024.

– Vasile A., Constantinescu D.M., Coropețchi C., Sorohan Șt, Apostol D.A., Definition, Fabrication, and Compression Testing of Sandwich Structures with Novel TPMS-Based Cores, Materials, vol. 17(21), 5150, https://doi.org/10.3390/ma17215150, 2024.

– Vasile A., Constantinescu D.M., Coropețchi C., Sorohan Șt, Apostol D.A., Numerical Simulation of Compressive Testing of Sandwich Structures with Novel Triply Periodic Minimal Surface Cores, Materials, vol. 18(2), 260, , https://doi.org/10.3390/ ma18020260, 2025.

– Coropețchi, C., Constantinescu, D.M., Vasile, A., Sorohan, Șt, Apostol, D.A., Comparative analysis of direct search methods for material design optimization, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, vol. 239(4), pp. 642-660, https://doi.org/10.1177/14644207241294056, 2025.