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Dataset on the tested and simulated response of thick cold-formed circular hollow sections under cyclic loading

Sadowski, Adam Jan (author), Wong, W.J. (author), Li, Sai Chung Simon (author), Málaga-Chuquitaype, Christian (author)

This article describes a dataset used to calibrate a finite element model of a thick circular hollow section (CHS) with varying d/t (diameter to thickness) ratio under cyclic loading which may be used as a computational model validation benchmark by researchers working on similar problems in structural and mechanical engineering. The test...

journal article 2024

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Heat-affected zone in welded cold-formed rectangular hollow section joints

Yan, R. (author)

High-strength steel (HSS) has higher strength but lower ductility than mild steel. The cross-section of the structural members may be reduced using HSS instead of mild steel, provided the buckling of elements does not govern the failure. The reduced member size benefits the environment and economy by means of less energy consumption, less carbon...

doctoral thesis 2023

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Influence of fiber orientation on the mechanical responses of engineering cementitious composite (ECC) under various loading conditions

Tawfek, Abdullah M. (author), Ge, Zhi (author), Yuan, Huaqiang (author), Zhang, Ning (author), Zhang, Hongzhi (author), Ling, Yifeng (author), Guan, Yanhua (author), Šavija, B. (author)

The mechanical performance of engineered cementitious composite (ECC) depends greatly on fiber orientation and distribution. In this paper, the effect of fiber orientation on ECC's mechanical properties was investigated using two different casting methods: a flow-induced casting was used to enhance the fiber orientation within ECC mixture and...

journal article 2023

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Local characterization of collagen architecture and mechanical failure properties of fibrous plaque tissue of atherosclerotic human carotid arteries

Torun, Su Guvenir (author), Munoz, Pablo de Miguel (author), Crielaard, Hanneke (author), Verhagen, Hence J.M. (author), Kremers, Gert Jan (author), van der Steen, A.F.W. (author), Akyildiz, A.C. (author)

Atherosclerotic plaque rupture in carotid arteries is a major cause of cerebrovascular events. Plaque rupture is the mechanical failure of the heterogeneous fibrous plaque tissue. Local characterization of the tissue's failure properties and the collagen architecture are of great importance to have insights in plaque rupture for clinical...

journal article 2023

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Investigation of concrete crack kinematics through probability density field of the location of acoustic emission events

Zhang, F. (author), Yang, Y. (author), Hendriks, M.A.N. (author)

Monitoring or identifying structural cracks is crucial for assessing the health of existing concrete structures. Key information about structural cracking encompasses the location of the crack and its kinematics, which include movements perpendicular and parallel to the crack face. Acoustic emission (AE) is a sensitive technique for detecting...

journal article 2023

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To measure is to know: Evaluating indirect measurement techniques for observing the damage tolerance behaviour of spot welded thermoplastic composites

Smeets, E.T.B. (author), Rans, C.D. (author), Castro, Saullo G.P. (author), Villegas, I.F. (author)

In thermoplastic composite joints with a circular ultrasonic spot weld, the damage growth is located at the interface between the joined components. This means that any damage in these joints is invisible from the outside. This experimental study compares three different in-situ methods to measure the damage growth indirectly. The motivation...

journal article 2023

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Advanced tensile testing as a new tool to quantify properties of food

Schlangen, Miek (author), Schlangen, E. (author), van der Goot, Atze Jan (author)

Mechanical properties of food products are regularly analysed by tensile tests. The aim of this study was to demonstrate the potential of using advanced tensile testing techniques to better understand the mechanical properties of anisotropic food products, such as meat analogues and certain dairy products. The effects of various tensile...

journal article 2023

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Thin-walled concrete beams with stay-in-place flexible formworks and integrated textile shear reinforcement

Lee, Minu (author), Mata-Falcón, Jaime (author), Popescu, M.A. (author), Kaufmann, Walter (author)

Thin-walled textile-reinforced concrete beams have recently emerged as a promising approach for material-efficient design. However, the increased complexity of the formwork is a major challenge in implementing such elements for broader use in the construction industry. This study presents a novel type of stay-in-place flexible formworks with...

journal article 2023

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Structural Behaviour of Slender Geopolymer Concrete BeamsWithout Stirrups

Lu, J. (author), Yang, Y. (author), van der Ham, H.W.M. (author), Fu, Danny (author)

Geopolymer concrete is a new alternative material to conventional concrete with less carbon dioxide emissions. Researchers have reported much research on the material properties of geopolymer concrete. However, research on the behaviour of this newmaterial at the structural level is still limited, especially at a full-scale structural level....

conference paper 2023

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Unfolding the Early Fatigue Damage Accumulation for Cross-ply Laminates

Li, X. (author)

Fatigue damage of composite laminates has attracted considerable attention from research community and industry, in view that laminated structures are inevitable to suffer from fatigue loading during their service life. It is rather complicated to understand and explain, what governs the initiation, accumulation, interaction (synergy or...

doctoral thesis 2022

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Measurement of damage growth in ultrasonic spot welded joint

Smeets, E.T.B. (author), Rans, C.D. (author), Alderliesten, R.C. (author), Castro, Saullo G.P. (author), Villegas, I.F. (author)

Ultrasonic spot welding is a joining technique for thermoplastic composites with great potential regarding processing speed and cost. To investigate the damage tolerance and possible inherent damage arresting behavior of multi-spot welded joints, a technique is necessary to measure damage growth in the joints under cyclic loading. Visual...

conference paper 2022

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A method for determining the constitutive model of the heat-affected zone using digital image correlation

Yan, R. (author), Xin, Haohui (author), Yang, Fei (author), El Bamby, H. (author), Veljkovic, M. (author), Mela, Kristo (author)

The heat-affected zone (HAZ) is an unmelted region of a welded joint that has changed in material properties because of high temperatures during the welding process. HAZ has a lower strength than the base (parent) material (BM) and the weld metal (WM). The lower material strength is more significant if BM is made of high strength steel and...

journal article 2022

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EMC oxidation under high temperature aging

Inamdar, A.S. (author), Gromala, Przemyslaw Jakub (author), Prisacaru, Alexandru (author), Kabakchiev, Alexander (author), Yang, Yu Hsiang (author), Han, Bongtae (author)

Epoxy molding compound (EMC) is widely used for encapsulating automotive electronics. Among all of the components of an electronic package, EMC is most exposed to the atmosphere, and thus undergoes aging. During high-temperature operation, EMC is oxidized, which alters its mechanical properties, and thus can affect the reliability of electronic...

book chapter 2022

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Measuring Hydroelastic Deformation of Very Flexible Floating Structures

Schreier, S. (author), Jacobi, G. (author)

For Offshore Floating Photovoltaics (OFPV) applications, thin-film PV panels on lightweight floating support structures gain increasing scientific and commercial interest. Over the past years, several different concepts of thin-film OFPV have been proposed, with the common denominator of floating mattress or blanket-like support structures...

conference paper 2022

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Identification of Stop Criteria for Large-Scale Laboratory Slab Tests Using Digital Image Correlation and Acoustic Emission

Christensen, Christian Overgaard (author), Zhang, F. (author), Zarate Garnica, G.I. (author), Lantsoght, E.O.L. (author), Goltermann, Per (author), Schmidt, Jacob Wittrup (author)

Advanced monitoring methods are required to identify stop criteria in proof-load tests. In this study, the combined methodology of two-dimensional digital image correlation and acoustic emission is investigated for its applicability for future implementation in field tests. The two monitoring systems are deemed to provide valuable insight...

journal article 2022

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Fatigue life and cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load

Sun, Renjuan (author), Han, Lebing (author), Zhang, Hongzhi (author), Ge, Zhi (author), Guan, Yanhua (author), Ling, Yifeng (author), Schlangen, E. (author), Šavija, B. (author)

This paper presents a study on cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load using digital image correlation (DIC) technique. Five stress levels, namely 0.65, 0.75, 0.8, 0.85 and 0.9 of the flexural strength, were applied. Strain map at the side surface was obtained by DIC and used to drive...

journal article 2022

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Measuring geometric imperfections of variable–angle filament–wound cylinders with a simple digital image correlation setup

Castro, Saullo G.P. (author), Almeida Jr., J.H.S. (author), St-Pierre, Luc (author), Wang, Z. (author)

Measuring the geometric imperfections in cylindrical shells is a critical step necessary to create accurate numerical models that can capture the imperfection-sensitive behavior of these structures. Modern composite structures, such as variable–angle filament–wound (VAFW) cylinders, have a unique imperfection signature that is still unknown to...

journal article 2021

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Damage accumulation analysis of cfrp cross-ply laminates under different tensile loading rates

Li, X. (author), Saeedifar, M. (author), Benedictus, R. (author), Zarouchas, D. (author)

This paper investigates the loading rate effect on both mechanical properties and damage accumulation process of [0°2/90°4]S carbon fiber-polymer laminates under tensile loading. In-situ edge observations, Acoustic Emission and Digital Image Correlation techniques were utilized simultaneously to monitor the state of damage in real time. Results...

journal article 2021

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The effect of modified tannic acid (TA) eco-epoxy adhesives on mode I fracture toughness of bonded joints

Saleh, M. (author), Tomić, Nataša Z. (author), Marinković, Aleksandar (author), Teixeira De Freitas, S. (author)

Two synthesized eco-epoxy components based on TA: (A) glycidyl ether and (B) glycidyl phosphate ester, are used, as a replacement for the Bisphenol A (BPA) based epoxy component, for bonding aluminum (Al) and carbon fiber reinforced polymer (CFRP). Their effect on the mode I fracture toughness (GI) is evaluated by Double Cantilever Beam (DCB)...

journal article 2021

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A method for identifying the boundary of regions in welded coupon specimens using digital image correlation

Yan, R. (author), El Bamby, H. (author), Veljkovic, M. (author), Xin, Haohui (author), Yang, F. (author)

The coupon specimen with a transverse butt weld in the middle could be used for determining local constitutive properties of the heat-affected zone (HAZ) and the weld metal (WM) based on the digital image correlation (DIC). However, limited research is reported to demonstrate how to identify the boundary of each region in DIC results....

journal article 2021