Sessions confirmed so far are listed below. The list is continuously updated. The classification of the sessions in technological areas will follow.
This session welcomes a broad spectrum of studies related to investigation and quantification of chloride induced corrosion consequences on reinforced concrete structures. The topic of the session focuses on the multifaceted adverse effects of corrosion on the serviceability and bearing capacity of reinforced concrete structures. Beyond the traditional considerations and in the new era of sustainable development, engineering and scientific community is expected to add evidence to the progress achieved in assessing the corrosion damage of reinforced concrete structures. Topics to be covered in this Special Issue include:
- Monitoring of corrosion level via surface concrete cracking
- Measurement of critical chloride concentration in the laboratory and on site
- Assessment of corroded RC structures
- Modelling the corrosive factor in RC elements
- Coatings to enhance durability of structures exposed to chloride-induced corrosion
- Bond-slip degradation due to corrosion
This special session is planned to cover the latest advancements in the field of additive manufacturing (AM) of structural components, focusing on all ranges of AM technologies and AM materials. The multidisciplinary subject requires considering the effects of process parameters, material response, surface characteristics as well as microstructural aspects and geometrical features.
Applications range from aerospace and automotive to building and biomedical sectors. The aim of this session is to provide an international forum that brings together academic and industrial contributors to exchange ideas on recent innovations and developments of various AM technologies and to discuss the future opportunities and applications. Contributions covering either experimental studies or numerical developments are welcome. In particular, the subjects include but are not limited to:
- Laser powder bed additive manufacturing (LPB-AM)
- Direct energy deposition additive manufacturing (DED-AM)
- Cold spray additive manufacturing (CS-AM)
- Post-processing technologies for additive manufacturing
- Related applications
This session aspires to present the behavior of certain material categories such as metals, ceramics and composite materials undergoing fracture, when exposed in extreme operation conditions. These conditions of course include the simple hydrothermal fatigue conditioning, space environment exposure, radiation exposure as well as hypersonic impact velocities. Useful conclusions are to be drawn by examination of the fracture response of such materials, with respect to their mechanical and viscoelastic response as well.
New materials and processes expand the design capabilities of multi-material systems. Research in the area of multi-material design and function-integration is becoming of great interest with new societal functions e.g. integrating recyclability and sustainability as functions in mechanical systems.
The aim of the session is to discuss new challenges for multi-material design and function-integration in multiple sectors to identify common challenges and enhance knowledge distribution on the example of selected contributions. In particular, the subjects include but are not limited to:
- Progress on multi-material design approaches
- Design-for and Design-from-recycling approaches
- Design for sustainability
- Simulation tools for function-integration
Additive manufacturing (AM), or 3D printing, represents a novel manufacturing technique to rapidly fabricate complex components—their external geometry and internal multimaterial phases are extremely difficulty to controlled via traditional manufacturing technologies. Nowadays, AM technique offers access to components from nano to meter scale, tolerates a wide variety of materials (e.g., metal, polymer, and ceramics), provides rapid design-to-manufacture cycle at relative low cost, and emerges as a technique for many advanced industrial applications in aerospace, transportation, navel, energy storge, and biomedical. Although AM technique offers so many advantages, the mechanical behaviors (e.g., fracture and fatigue) of 3D printed components have not been fully understood, thereby forming a huge barrier for critical load-bearing applications.
This session aims to provide a state of the art in the field of structural integrity of additive manufactured and 3D printed components at different scales. Contributions—a collection of studies associated with analytical modeling, numerical simulation, and experimental study—on components fabricated by polymer and/or metal AM techniques are welcome.
Considering the latest developments in all the industrial sectors and the need for advanced and sophisticated composite structures, this section deals with the manufacturing processes for producing reliable composite structures with minimized defects content. It covers a large variety of manufacturing procedures, among which the thermoforming, injection molding, filament winding, wet molding, lamination, pultrusion, automated tape layering, aerosol jet printing etc., as well as a combination of them. Quality assessment, defect detection, mechanical characterization, and simulations towards the neat amelioration of the outcome of the fabrication process are expected in this session, aiming to go a step further to the so-called zero-defect manufacturing of composite materials and structures.
Structural Health Monitoring (SHM) methods and architectures for damage detection and localization in structural components and assemblies (metallic, composite or hybrid). Techniques based on analytical or/and numerical modeling procedures. Statistical pattern recognition and Machine Learning based methods. Uncertainty quantification in the SHM problem accounting for environmental and operational variability. Approaches for generating structural digital twins.
The correct treatment of the size effect is an unavoidable requirement to ensure safety of the components and structures. Interesting advances have been achieved in the size effect when FEA applications to face the complex cases raising in the current design. This, in turn, poses new challenges to be resolved due to the complex cases that are being presented in practice.
The concept of structural integrity requires a consistent use of probabilistic assessment techniques to achieve a reliable characterization of materials and components and their application to the failure (fracture and fatigue) design of components and structures.
In this session, contributions from engineers, scientists, consultants among others are expected contributing to the development and applications of models related to the probabilistic evaluation of experimental failure results, particularly related to size effect. The session will be a suitable forum to discuss the last advances on size effect and probabilistic fatigue assessment studies allowing a multidisciplinary discussion to be achieved.
This session is open to all applications of all NDT methods (including but not limited to ultrasonics, acoustic emission, X-ray, thermography, eddy current, etc.) and SHM methods to any structures/components made from different materials, including but not limited to composites, concrete, ceramics, 3D printed materials, cultural heritage items. Presentations on novel applications of NDT/SHM techniques in various fields, like aerospace, civil engineering, materials characterization, etc. are expected. Potential topics include, but are not limited to, detection, identification, and localization of damage, modelling/simulations, signal processing, and various industrial applications.
Additive manufacturing (AM) techniques offer a disruptive transformation in how products are designed and manufactured. The direct conversion of digital geometries into physical parts translates into less waste of time and material compared to traditional manufacturing processes. This peculiarity combined with the impressive evolution of AM technology has allowed the production of complex parts for different engineering applications and has positively impacted the overall economy, owing to the potential use of AM for prototyping, production, and repairing. Presently, it is used in many industries, such as aerospace, defense, automotive, consumer products, industrial products, medical devices, and architecture. In order to take full advantage of AM, understanding and estimating the mechanical performances of the related parts in load-bearing applications is of paramount importance. The structural integrity of AM parts is therefore a key topic to be investigated for supporting the spread of this technology. The special session entitled “Fatigue and Fracture of additively manufactured materials and components” will focus on the relationships between process parameters, post-fabrication treatments, microstructure, surface state, and statistics of defects.
Interest in additive technologies has grown swiftly as applications have progressed from rapid prototyping to the production of end-use products. Additively produced components can now use metals, polymers, composites, or other powders to make a range of functional or daily usage components, layer by layer, including complex or "lighten" porous materials that cannot be manufactured by other means. Despite much research and the results achieved, however, there are still unexplored problems in this area that cause components produced by the additive approach to fail in operation or after a short period of their use. The objectives of the session are therefore focused, but not limited on
- Influence of manufacturing/technological conditions on the quality of 3D printed parts
- Mechanical properties of additively produced samples/components
- Analyses and simulations
- Failure/fracture modes and criterion
- Failure prediction and prevention
- Testing and defects detecting
- Application of AM parts in real practice
- The behavior of cellular materials and structures (their properties, manufacturing, testing, etc.)
The research field of the session is mainly focused on the interaction between microstructure and fracture related processes as it can be assessed by conventional and modern experimental analytical techniques, aiming to provide insightful comments and contributions towards the better understanding of damage evolution and fracture, that could assist to the expansion of operational lifetime of materials, components and structures, resulting in failure prevention. Case histories featuring industrial applications are also encouraged.
The session topics could be divided in to the following major representative groups:
1. Microstructure-induced failures
2. Fractographic analysis for failure investigation
3. Texture relationships and fracture
4. Genesis of damage at nano- and micro-scale level
5. Modeling of microstructure degradation processes with experimental validation
6. Failures in new and modern manufacturing processes
7. Failure prevention strategies based on microstructural design
8. Modern approaches in fracture identification and characterization (e.g. AI, machine learning)
Despite the monumental effort of previous generations of researchers dealing with fatigue life estimations, the process of defining and validating design methods to be included in the computational fatigue analysis cannot be understood as finalized. On contrary, the base of many effects concurring in fatigue damaging, be it, e.g., size effect, notch effect, roughness effect, surface treatment effect, stress multiaxiality effect, frequency effect, etc. was derived on data available in those times, where their simple aggregation and inclusion in the computational method validation were far from easy and straightforward. The fact that the modern trend of lightweight structures is accompanied by increasing dependency on ready-made computational fatigue solvers, which should be used in their design process, creates an explosive combination that calls for preventive action.
The validation studies showing applications of specific fatigue design methods and explaining the reasons for potential disagreements with experimental data are welcomed in this session, as well as any further innovative approaches to derive new solutions for fatigue design.
The objectives of this ICEAF sessions are fully focused on computational fatigue analysis:
- To provide new experimental data which could be used in validation studies.
- To validate fatigue estimation methods.
- To discuss the scale and quality of data sets used for validation.
- To evaluate how involvement of Artificial Intelligence could scale up such attempts.
Recent technological developments establish additive manufacturing (AM) technologies more and more amongst the favourite physical processing routes for producing complex shapes and multi-material components. Variations in physicochemical and mechanical properties of additively manufactured products originate mostly from surface conditions, defects, feedstock and build anisotropy. These properties affect the structural integrity and in-service performance with respect to corrosion, fracture, mechanical and wear behaviour. Additive manufacturing is often followed by post-processing such as heat treatments and hot/cold isostatic pressing, which would also influence/alter the microstructural features and subsequently the mechanical behaviour and structural integrity of the material.
The aim of the session is to improve the understanding of the processing-structure-properties relation of additively manufactured materials as compared to materials produced by conventional processing, such as casting, rolling, extrusion, forging, etc. Emphasis will be given on the effect of process parameters on the microstructure, surface conditions, material texture/anisotropy and mechanical/environmental behaviour. Processing simulations and (micro) structural modelling are necessary to verify the performance of AM materials and products. Abstracts may thus refer to experimental and/or modelling studies relating various aspects of processing, microstructures, properties and performance of additive manufactured materials or components.
Topics to be covered*
The session addresses the following topics:
• Modern and emerging AM processes and their effect on improved material performance.
• Breakthrough performance and applications for AM materials.
• AM processes and benchmarking of different process routes on the same material.
• New materials produced by additive manufacturing.
• New material and geometry design targeting to unique property combinations.
• Hybrid and composite materials.
• Advanced characterisation, modelling and testing of AM materials.
• In-situ, real time monitoring of AM processing.
* All material classes namely metals and alloys, polymers, ceramics, and composites are relevant to the scope of the session.
This session welcomes a broad spectrum of studies that are addressing aviation industrial problems, not the least of which are related to a pressing demand for optimization and automation as well as a broader sustainability agenda. The subjects include but are not limited to: Advancements/Innovations in Maintenance, Repair, and Overhaul (MRO), Aircraft systems health monitoring (SHM), Condition-based and predictive maintenance (CBM/PdM), MRO Decision Support Systems, Emerging inspection/NDT and repair methodologies, Advanced aerospace materials, Novel propulsion solutions.
Very often based on lessons learned from aircraft accidents, design methods and processes for compliance demonstration with applicable standards have been established that are able to increase the level of safety for the occupants of an aircraft. The topic of the session covers new solutions to the “classic” structural design aspects for crashworthiness, such as structural integrity and energy absorption characteristics of the airframe, efficient restraint systems, minimized environmental hazards from loose or sharp objects, and reduced post-crash hazards from fire, smoke and fumes. Beyond these traditional crashworthiness considerations, and in view of new trends in aircraft design, the session also includes novel features of innovative propulsion systems and propellants such as electrical, mechanical, chemical, and functional safety of electric power trains or fuel cells and the storage and on-board handling of hydrogen. Finally, the session is also open to operational aspects, for instance, recovery systems or human factors.
The process for the design of materials and devices is aimed at defining a nominal set of input parameters to achieve given performances in operating conditions. Nevertheless, the realization of the final product eventually results in an imperfect component, which can be low-performing or even fail to meet the requirements, due to the unpredictable effect of variables that intervene in the fabrication process (e.g. geometrical tolerances of the design parameters, fluctuations of the environmental conditions, variations of process-dependent quantities).
For this reason, several analytical, computational, and experimental approaches exist with the multiple purpose of assessing the impact of tolerances on selected quantities of interest, understanding t the most influential parameters, and determining the nominal set of parameters ensuring robust performances of the designed material or device with respect to uncontrollable fabrication-related variations.
This specials session welcomes contributions concerning the theoretical and experimental techniques adopted during the design phase of materials and devices to take into account the uncertain parameters, aiming at assessing the sensitivity of the component and achieving its robust design.
Reliable, generally accepted, and - if possible - easy-to-apply calculation guidelines for providing proof of safety and thus preventing failure processes are not only very helpful for the developing engineer but are absolutely indispensable against the background of increasingly stringent safety requirements.
The presentation of innovations in the field of guideline developments and their application are the subject of this session. Equally, contributions that demonstrate the practical benefits of the guidelines by presenting the experiences of industrial users are highly welcome.
The target groups are engineers from all branches of mechanical and vehicle engineering and aircraft construction as well as plant and apparatus engineering who are active in the test field, in development, design, and calculation as well as monitoring and maintenance of machines and plants in industry and research institutions.
The session entitled "Recent advancements in welding processes " aims to cover the following topics:
- Phase transformations in weldments, microstructure-property relationships
- Sensing, control, and automation.
- Residual stresses and distortions: measurements, modeling, and mitigation
- Welding practices in industries
- Weldability of materials
- Weld failure modes & Design criteria
- Failure analysis of welded structures
Prolonging the service life of engineering structures by protecting against influences from aggressive environments is a challenging industrial need. On top, circularity of materials supporting the new paradigms of the European green deal calls for new material concepts covering the complete life cycle of parts.
This session is open to scientists and engineers working in applied research in the field of materials development and surfaces technologies designed to avoid corrosive degradation and damage. Aspects of protective coatings development and modelling, including aspect of recyclability and sustainability, builds a special focus of the event.
Contributions on new approaches and results in materials modeling, optimization, business decision support systems and digitalization, as well as characterization methods (both destructive and non-destructive) applied to corrosion engineering and surface protection technologies are very welcome in this session.