Docente
Jónatas Miguel De Almeida Valença

Resume

Jónatas Miguel de Almeida Valença is Researcher at CERIS - Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, University of Lisbon, and his interests focus on Advanced Structural Health Monitoring and Characterization; Cutting-edge Methods for Experimental Monitoring; Strengthening, Rehabilitation and Conservation of Structures and Built Heritage. In all these fields he developed tools based on processing of multispectral images and computer vision. Jónatas Valença is (was) member of the following technical-scientific associations: ISPRS (International Society for Photogrammetry and Remote Sensing); IABMAS (International Association for Bridge Maintenance and Safety); CIPA (The International Committee for Documentation of Cultural Heritage); GPBE (Portuguese Group of Structural Concrete); and ASCP (Portuguese Association for Bridges Security and Conservation). He is (was) principal investigator or member in projects funded by the Foundation for Science and Technology (FCT), ANI (former Adi), both Portuguese governmental institution, and directly funded by the industry. Author of more than 70 scientific papers published in international and national journals and conferences which, combined with seminars/ workshops, results in more than 50 oral communications in research and technical events. Additionally, is reviewer of international journals, member of juries in theses examinations, and supervisor of PhD and MSc students. Jónatas Valença was Assistant Professor at the Civil Engineering Department of Instituto Superior Técnico of the University of Lisbon (2016/17); Assistant and Lecture at Polytechnic Institute of Coimbra (2008-2014), and Assistant Lecture at Polytechnic Institute of Castelo Branco (2006/2007). In all these Institutions he has developed educational activity in MSc, BSc and Technological Specialisation Courses, in the fields of Structural Engineering. Additionally, he already performed lectures by invitation at University of Coimbra and University of Lisbon, both in Portugal, and at Universidad Politècnica de València, Spain, Chitkara University, India, and Technical University of Munich, Germany. As technical consultant, he has participated in dozens specialized consulting studies, with emphasis on monitoring of bridges load tests and mechanical/structural characterization and diagnosis of structures pathology. Furthermore, he was Founder Partner of SBE - Science-Based Engineering (2012-2013), spin-off of the Instituto Pedro Nunes in Coimbra, where he was the Head of the Assessment and Monitoring of Structures sector.

Graus

• Doutoramento
  Engenharia Civil
• Mestrado
  Mestrado de Estruturas
• Licenciatura
  Engenharia Civil
• Pós-doutoramento
  Advanced Crack Characterization of Concrete Bridges (A3CB)

Publicações

Artigo em revista

• 2023-06-01, StainView: A Fast and Reliable Method for Mapping Stains in Facades Using Image Classification in HSV and CIELab Colour Space, Remote Sensing
• 2023-06, Restoration intervention of exposed white concrete buildings: The case of ‘Pavilhão do Conhecimento’, Portugal, Journal of Building Engineering
• 2023-02-22, An Image-Based Framework for Measuring the Prestress Level in CFRP Laminates: Experimental Validation, Materials
• 2022-12-07, The Maintenance of Monuments as the Main Trigger to Negative Feelings in Tourists, Buildings
• 2022-12, Automatic strength assessment of the virtually modelled concrete interfaces based on shadow-light images, Construction and Building Materials
• 2022-09-11, Benchmarking for Strain Evaluation in CFRP Laminates Using Computer Vision: Machine Learning versus Deep Learning, Materials
• 2021-08-11, Design and Durability Assessment of Restoring Mortar for Concrete Heritage, Materials
• 2020-09-05, Chromatic design and application of restoration mortars on smooth surfaces of white and GRAY concrete, Structural Concrete
• 2019-04-05, Evaluation of the shear transfer mechanisms in reinforced concrete beams using photogrammetry, Structural Concrete
• 2019-03-14, Automatic mapping of cracking patterns on concrete surfaces with biological stains using hyper-spectral images processing, Structural Control and Health Monitoring
• 2019-02-25, A new method for corrosion assessment of reinforcing bars based on close-range photogrammetry: Experimental validation, Structural Concrete
• 2019, Colored concrete restoration method: For chromatic design and application of restoration mortars on smooth surfaces of colored concrete, Structural Concrete
• 2019, Assessment of plastic rotation and applied load in reinforced concrete, steel and timber beams using image-based analysis, Engineering Structures
• 2018-11-15, MCrack-Dam: the scale-up of a method to assess cracks on concrete dams by image processing. The case study of Itaipu Dam, at the Brazil–Paraguay border, Journal of Civil Structural Health Monitoring
• 2018-06-26, Special Issue: “Concrete Structures: Present and Future Trends”, Infrastructures
• 2018-02-06, Innovative Method for Automatic Shape Generation and 3D Printing of Reduced-Scale Models of Ultra-Thin Concrete Shells, Infrastructures
• 2018, Behavior of reinforced concrete frame with masonry infill wall subjected to vertical load, Engineering Structures
• 2017, Method for assessing beam column joints in RC structures using photogrammetric computer vision, Structural Control and Health Monitoring
• 2017, Influence of concrete strength and steel fibre geometry on the fibre/matrix interface, Composites Part B: Engineering
• 2017, Experimental evaluation of lightweight aggregate concrete beam-column joints with different strengths and reinforcement ratios, Structural Concrete
• 2017, Crack propagation monitoring using an image deformation approach, Structural Control and Health Monitoring
• 2017, Assessment of cracks on concrete bridges using image processing supported by laser scanning survey, Construction and Building Materials
• 2015-12-01, Patch Restoration Method: A new concept for concrete heritage, Construction and Building Materials
• 2015, Assessing steel strains on reinforced concrete members from surface cracking patterns, Construction and Building Materials
• 2014, Longitudinal reinforcement ratio in lightweight aggregate concrete beams, Engineering Structures
• 2014, Curvature assessment of reinforced concrete beams using photogrammetric techniques, Materials and Structures
• 2014, Automatic concrete health monitoring: assessment and monitoring of concrete surfaces, Structure and Infrastructure Engineering
• 2014, An Efficient Technique for Surface Strain Recovery from Photogrammetric Data using Meshless Interpolation, Strain
• 2013, Damage assessment on concrete surfaces using multi-spectral image analysis, Construction and Building Materials
• 2013, Damage Assessment on Concrete Surfaces using Multi-Spectral Image Analysis, Construction and Building Materials
• 2013, Automatic crack monitoring using photogrammetry and image processing, Measurement: Journal of the International Measurement Confederation
• 2012, Concrete heritage: Tentative guidelines for the 'Patch Restoration Method', Concrete Repair, Rehabilitation and Retrofitting III - Proceedings of the 3rd International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2012
• 2012, Characterisation of concrete cracking during laboratorial tests using image processing, Construction and Building Materials
• 2012, Characterisation of concrete cracking during laboratorial tests using image processing, Construction and Building Materials
• 2012, Applications of Photogrammetry to Structural Assessment, Experimental Techniques
• 2010, Conservation requirements for concrete heritage. The case study of the buildings of the Fundação Calouste Gulbenkian in Lisbon, Structures and Architecture - Proceedings of the International Conference on Structures and Architecture, ICSA

Tese / Dissertação

• 2016, Mestrado, Aplicação de métodos avançados de processamento de imagem a ensaios de tirantes de betão armado
• 2015, Mestrado, Análise de ligações com betão estrutural de agregados leves por processamento de imagem
• 2011, Doutoramento, Monitorização do Estado de Conservação de Estruturas de Betão por Processamento de Imagem e Análise Multi-Espectral

Capítulo de livro

• 2023, Reuse and Conservation of Built Heritage in Exposed Concrete: Recent Intervention by Álvaro Siza (2018–2021)

Artigo em conferência

• 2023-11-30, Emotional Maintenance: A Digital Model to Support Maintenance Decisions in Buildings’ Coatings
• 2019, Strain monitoring on pre-stressed CFRP laminates through computer vision
• 2019, Monitoring cracks on concrete surfaces using multi-temporal images
• 2019, Aerial Crack View: Crack monitoring in concrete bridges through image processing acquired by UAV
• 2018, Classification of biological colonization on concrete surfaces using false colour HSV images, including near-infrared information
• 2017, Vision-SHM method for structural monitoring based on photogrammetric computer vision
• 2017, Detection of cracks on concrete surfaces by hyperspectral image processing
• 2016, The MCrack-TLS method for assessing cracks on concrete bridges based on image processing and laser scanning
• 2014, Systems based on photogrammetry to evaluation of built heritage: Tentative guidelines and control parameters
• 2014, Monitoring concrete members to SLS and ULS using image analysis