SASCOM Courses - Composites delamination: modelling and characterisation

DAY 1: January, 25th, 2022

Lecture 1:

  • Introduction to delamination
  • Modelling interface cracks:
    • crack propagation modes
    • traction-separation behaviour
    • initiation, propagation, cohesive length
    • limit case: linear elastic fracture mechanics

Lecture 2:

  • Linear elastic fracture mechanics:
    • hypotheses and derivation
    • strain energy release rate and dissipated energy
    • stable and unstable crack propagation
  • Illustration: modelling the Double Cantilever Beam (DCB) test

Optional homework:

post-treatment of DCB test data according to ASTM standard


DAY 2: February, 1st, 2022

Lecture 3: 

  • Characterisation tests for composites delamination
    • DCB test standard (homework correction)
    • Mode II standards: 3- and 4- point End Notched Flexure (ENF)
    • Mixed mode standards: Mixed Mode Bending (MMB)
    • limitations

Lecture 4:

  • Characterisation tests for adhesives debonding
    • Climbing Drum Peel (CDP) test for sandwich debonding
    • Peel tests
    • Other testing configurations

 

About the Speaker

Federica Daghia is Associate Professor (Maître de Conférences HDR) at the École Normale Supérieure Paris-Saclay, in France. She earned her PhD in 2008 from the University of Bologna, in Italy, and her Habilitation in 2016 from École Normale Supérieure de Cachan, in France. Between 2016 and 2021, she was member of the French National Committee for Scientific Research (CoNRS) – Mechanics Section. Since 2016, she is Secretary of the French Society for Composites Materials (AMAC).

Her research interest involve the physics-based modeling of damage and failure of composite and architectured materials, from experimental characterisation to numerical simulation.

By Dr. Federica Daghia

  • École Normale Supérieure Paris-Saclay, France

Note: the registration is closed


SASCOM MasterClass - Composite materials for the structural strengthening of concrete structures

Session 1: Properties of composite materials, strengthening techniques, and evidence of strengthening effectiveness
September, 28th, 2022         3-6 pm KSA (UTC+3)

  • Properties of composite materials (Prof. Joaquim Barros, 30 min)
  • Strengthening techniques (Prof. Joaquim Barros, 30 min)
    • Externally bonded reinforcement for flexural and shear
    • Near surface mounted for flexural and shear
    • Embedded through section for shear
    • Seismic
  • Evidence of strengthening effectiveness by experimental research
    • Flexural strengthening (Dr. Inês Costa, 120 min)

Session 2: Evidence of strengthening effectiveness (cont’d)
October, 11th, 2022         3-6 pm KSA (UTC+3)

  • Evidence of strengthening effectiveness by experimental research (cont’d)
    • Shear strengthening (Prof. Joaquim Barros, 90 min)
    • Torsional strengthening (Prof. Joaquim Barros, 30 min)
    • Seismic strengthening (Prof. Joaquim Barros, 60 min) 

Session 3: Design guidelines
October, 25th, 2022         3-6 pm KSA (UTC+3)

  • Design guidelines
    • Flexural (Dr. Inês Costa & Dr. Tiago Valente, 120 min)
    • Shear and torsion (Dr. Inês Costa & Dr. Tiago Valente, 60 min)

Session 4: Design guidelines (cont’d) and case study
November, 1st, 2022         3-6 pm KSA (UTC+3)

  • Design guidelines (cont’d)
    • Confinement (Prof. Joaquim Barros, 60 min)
  • Case study (Dr. Tiago Valente & Dr. Inês Costa, 120 min)

 

 

 

 

About the Speakers

Joaquim A. O. Barros is Full Professor of the Department of Civil Engineering of Minho University, Director of the PhD in Civil Engineering and coordinator of the Structural Composites Group. He is a Fellow American Concrete Institute (ACI), and voting member of ACI Technical Committees: 440-Fiber-Reinforced Polymer Reinforcement and 544-Fiber-Reinforced Concrete. He is a member of the Technical Committees of the International Federation for Structural Concrete (fib): TG 4.1-Fibre Reinforced Concrete, TG 5.1-FRP Reinforcement for Concrete Structures, TG 4.3-Structural design with flowable concrete, and Convener of the fib TG 2.4.1-Modelling of Fibre Reinforced Concrete Structures. He is a member of the International union of laboratories and experts in Construction materials, systems and Structures – RILEM: TC-234-DUC – Design procedures for the use of composites in strengthening of reinforced concrete structures. He was a member of the RILEM TC 162-TDF and ACI 506 – Shotcreting. He was a council member of the International Institute for FRP in Construction (IIFC). He was member of the Scientific Advisory Committee of the Australian “Design Guideline for RC structures retrofitted with FRP and metal plates: beams and slabs“. His research interests include structural strengthening, composite materials, fiber reinforced concrete and the development of constitutive models for the simulation of the behavior of cement based and polymer based materials, and their implementation in software based on the finite element method (FEM). He his author of more than 800 papers divided by books, chapter of books, journal papers (>200 in ISI journals), conferences, monographs and educational reports. At July 2022 his h-Index-Scopus was 41, while according to the Google scholar the total number of citations was @11500 with an h-index of 52 and an I10-Index of 231, and Researchgate indexes of: RG Score of 42.92, percentile > 97.5%, Citations@8550, Reads@128000. Chairman of 10 international conferences, with special reference to: BEFIB2012- 8th RILEM International Symposium on Fibre Reinforced Concrete: challenges and opportunities; FRPRCS11- Eleven International Symposium on Fibre Reinforced Polymer for Reinforced Concrete Structures, and 4 national conferences, and 7 Seminars/Workshops. He is the co-founder of FEMIX FEM-based computer program for advanced structural analysis. He participates(ed) in 44 research projects (24 as coordinator). Supervisor of 7 Pos-Doc (concluded), 53 PhD (41 concluded) and 38 MSc (37 concluded). He is the founder of the CiviTest Company (www.civitest.pt), and consultant on the areas of fiber reinforced concrete (FRC) structures, structural rehabilitation and strengthening, and for the development of new materials for innovative structures, most notably the design of affordable houses in FRC for South America Countries, the strengthening of residential/commercial buildings with prestressed carbon fibre laminates, and the structural design of the Centro de Solidariedade de Braga, which was named for the Secil 2005 prize. He is co-inventor of the national patents PT116162, 107111 and 108615, and co-inventor of the international patents 108611 and EP21177011.0.

 

Tiago Valente holds a PhD in Civil Engineering, graduated by the University of Minho and is a Civil Engineer and technical director of the Design and Advanced Modeling at the company CiviTest – Pesquisa de Novos Materiais para a Engenharia Civil, Lda. He has extensive experience in the design and of structures, as well as in research and development of new materials and structural systems. His research interests include numerical simulation of the behavior of structures, fiber reinforced concrete, composite structures and the development and implementation of software for the analysis and design of structures.

 

Inês Costa is the Technical Director of CiviTest LDA Laboratory. She has extensive experience in the experimental area, both concerning the execution of standardized tests in cementitious, steel and polymeric materials, as well as the design and execution of non-standardized tests and full-scale tests on strengthened reinforced concrete structural elements in the scope of R&D projects. She has also analytical and numerical research skills, with emphasis on material nonlinear analysis of concrete structures strengthened with composite materials and on the development of analytical formulations to support design guidelines.

By Prof. Joaquim Barros, Dr. Tiago Valente and Dr. Inês Costa

  • CiviTest, Portugal


Registration form

 

Registration is closed !

** Note: the registration is open until 5 PM (KSA time) October 4th 2022 ** 


SASCOM Courses - Introduction to Composite Materials

st lecture, Nov 2, 2021

  • Constituent materials, manufacturing processes and semi-products.
  • Matrices, fibers and interfaces. Role and selection of the constituents.
  • Properties of the constituents; effects of fiber sizing.
  • Semi-products: short-fiber, SMC, NCF, textiles and pre-pregs.
  • Examples of applications of different types of composite materials.
  • Processes for thermoset-based composites: RTM, autoclave, resin infusion, pultrusion, filament winding.
  • Processes for thermoplastic-based composites: automatic tape laying, stamp forming.
  • Additive manufacturing of composite materials.
  • Effects of manufacturing defects.

nd lecture, Nov 9, 2021

  • Mechanical behavior and characterization.
  • Properties of composite systems and how to measure them. Characterization of the mechanical properties of the constituents, fiber, matrix and interface. Mechanical tests from coupon to sub-component. Building-block approach.

rd lecture, Nov 16, 2021

  • Classical lamination theory.
  • Lamina stiffness, stiffness of symmetric laminates, stiffness of general laminates, warpage. Invariant-based approach to stiffness.

th lecture, Nov 23, 2021

  • Designing with composite materials.
  • Failure mechanisms. Ply-based failure criteria. Last-ply failure of multidirectional laminates. Omni-envelope approach. Effects of stress concentrations. Point- and average-stress methods. Finite Fracture Mechanics. Damage tolerance design

About the Speakers

Albertino Arteiro received a Master’s Degree in Mechanical Engineering – Specialisation in Structural Engineering and Machine Design – from the Faculty of Engineering – University of Porto in 2012, and a Doctoral Degree in Mechanical Engineering (cum Laude) from the same University in 2016, during which he was a Visiting Student Researcher at the Department of Aeronautics and Astronautics of Stanford University. He was awarded the Best PhD Thesis by the Portuguese Association of Theoretical, Applied and Computational Mechanics (APMTAC).

Albertino Arteiro was appointed Assistant Professor at the Materials and Technological Processes Group of the Department of Mechanical Engineering (DEMec) of the Faculty of Engineering – University of Porto in 2019. He is currently a member of the ECCOMAS Young Investigators Committee.

His research interests include material modelling at different length-scales, design and analysis of composite systems based on new concepts, and composites manufacturing.

Pedro Camanho (MSc in Mechanical Engineering, UPorto, 1995) received his PhD in Composite Materials from the Department of Aeronautics, Imperial College London, UK, in 1999. In the same year he joined the Institute of Mechanical Engineering and Industrial Management (INEGI – www.inegi.up.pt) as Director of the Structural Integrity Unit and the Department of Mechanical Engineering of the University of Porto as Assistant Professor. Since 2014 he has been Full Professor at the Department of Mechanical Engineering of the University of Porto. Pedro Camanho is currently the President of the Associated Laboratory in Energy, Transportation and Aeronautics (LAETA), and the Vice-President of INEGI.

The main research interests of Pedro Camanho are the mechanics of deformation and fracture of advanced polymer composite materials, and new concepts for lightweight composite materials and structures for aerospace applications such as hybrid, nano-structured, multi-functional, variable-stiffness, energy-storage and ultra-thin composites.

By Prof. Albertino Arteiro & Prof. Pedro Camanho

  • INEGI, University of Porto