Searched for: author%3A%22Rans%2C+C.D.%22
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Schuurman, M.J. (author), Rans, C.D. (author)
The Faculty of Aerospace Engineering at the Delft University of Technology has an active learning philosophy which is embedded in its curriculum. The first year project Design and Construction is run in the second semester. The course aims to provide “hands-on” experience to students in design and construction. Applying knowledge from courses...
conference paper 2022
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Kolken, H.M.A. (author), Garcia, A. Fontecha (author), Plessis, A. Du (author), Meynen, A. (author), Rans, C.D. (author), Scheys, L. (author), Mirzaali Mazandarani, M. (author), Zadpoor, A.A. (author)
The fatigue performance of additively manufactured auxetic meta-biomaterials made from commercially pure titanium has been studied only recently. While certain assumptions have been made regarding the mechanisms underlying their fatigue failure, the exact mechanisms are not researched yet. Here, we studied the mechanisms of crack formation...
journal article 2022
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Kolken, H.M.A. (author), Garcia, A. Fontecha (author), Du Plessis, A. (author), Rans, C.D. (author), Mirzaali Mazandarani, M. (author), Zadpoor, A.A. (author)
Meta-biomaterials offer a promising route towards the development of life-lasting implants. The concept aims to achieve solutions that are ordinarily impossible, by offering a unique combination of mechanical, mass transport, and biological properties through the optimization of their small-scale geometrical and topological designs. In this...
journal article 2021
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Ardila Rodriguez, L.A. (author), Rans, C.D. (author), Poulis, J.A. (author)
Surface morphology of adherends is an important factor to take into consideration when studying and improving the performance of an adhesive bonded joint. In this study, the adhesion performance three different surface morphologies of Selective Laser Melted (SLM) Ti6Al4V was studied. The three surface morphologies were created by manufacturing...
journal article 2021
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Jones, Rhys (author), Rans, C.D. (author), Iliopoulos, Athanasios P. (author), Michopoulos, John G. (author), Phan, Nam (author), Peng, Daren (author)
The United States Air Force (USAF) Guidelines for the Durability and Damage Tolerance (DADT) certification of Additive Manufactured (AM) parts states that the most difficult challenge for the certification of an AM part is to establish an accurate prediction of its DADT. How to address this challenge is the focus of the present paper. To this...
journal article 2021
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Shakeri, Iman (author), Shahani, Amir Reza (author), Rans, C.D. (author)
Since welded joints in structures are known to be critical regions for crack initiation and growth, study of fatigue crack growth behavior of welded joints under various loading scenarios are essential. In present study, two groups of experiments were conducted. At first, fatigue crack growth behavior of Al5083 butt welded joint subjected to...
journal article 2021
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Ardila Rodriguez, L.A. (author), Boshuizen, B. (author), Rans, C.D. (author), Poulis, J.A. (author)
In this study, different surface pretreatments were applied to clean and activate titanium alloy surfaces. The samples were subjected to grit blasting treatments using two different pressures and afterwards, a UV/Ozone treatment was applied at different times to study the wettability and surface oxidation of the titanium samples. Scanning...
journal article 2021
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Rans, C.D. (author), Teuwen, Julie J.E. (author)
conference paper 2021
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Villegas, I.F. (author), Rans, C.D. (author)
Single-lap shear (SLS) joints are straightforward to manufacture. This makes them especially attractive for testing polymer composite welded joints. Owing to local heating, which is characteristic of composite welding processes, the production of more geometrically intricate joints (such as double-lap or scarfed joints) or bigger joints (such...
review 2021
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Baldassarre, Alessandro (author), Martinez, Marcias (author), Rans, C.D. (author)
The present study reports on the evaluation of residual stress field formation and distribution in Central Cut Plies (CCP) specimens. Real-time measurements were performed using a distributed sensing fiber optic system based on Rayleigh Backscattering, which was successfully able to capture strain distribution inside the adhesive layer at...
review 2020
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Shahani, Amir Reza (author), Shakeri, Iman (author), Rans, C.D. (author)
Redistribution of residual stress during crack growth in butt welded joint of Al5083-H111 was studied. Furthermore, the effect of post weld heat treatment and removing the weld reinforcements on fatigue crack growth rate was investigated. Three dimensional simulations of welding process and fatigue crack growth were conducted. It was shown...
journal article 2020
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Iliopoulos, Athanasios P. (author), Jones, Rhys (author), Michopoulos, John G. (author), Phan, Nam (author), Rans, C.D. (author)
Understanding and characterizing crack growth is central to meeting the damage tolerance and durability requirements delineated in USAF Structures Bulletin EZ-SB-19-01 for the utilization of additive manufacturing (AM) in the sustainment of aging aircraft. In this context, the present paper discusses the effect of differentAMprocesses,...
journal article 2020
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Baldassarre, Alessandro (author), Ocampo, Juan (author), Martinez, Marcias (author), Rans, C.D. (author)
The application of strain gauges as recommended by the ASTM standards provides accurate strain measurements in isotropic materials. However, their use in composite materials becomes more challenging due to their anisotropic nature. In this study, we hypothesized that the use of the distributed sensing system and the three-dimensional digital...
journal article 2020
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Zhao, T. (author), Tsakoniatis, Ioannis (author), Rans, C.D. (author), Villegas, I.F. (author), Benedictus, R. (author)
Thermoplastic composite spot welded joints are more well-suited for carrying shear load rather than peel load. However, peel load is difficult to be eliminated in single-lap joint configuration. In this paper, a series of mechanical tests were carried out to study the effects of the spot spacing and the number of welded spots on the secondary...
conference paper 2020
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Saunders-Smits, Gillian (author), Rans, C.D. (author), Teuwen, Julie J.E. (author), Sinke, J. (author), Alderliesten, R.C. (author), van Valkenburg, W.F. (author)
Although aerospace traditionally has always had a multidisciplinary approach to engineering and design, the increasing complexity of aircraft and spacecraft and the rapid digitization within the aerospace industry has led to a large number of related engineering and scientific disciplines such as electrical engineers, computer scientist to work...
conference paper 2020
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Ribeiro, Fabricio N. (author), Martinez, M.J. (author), Rans, C.D. (author)
The lack of a widely-accepted test standard for characterizing the mode II fatigue disbond growth behavior of adhesively bonded interfaces is a challenge to the research community in terms of producing consistent and repeatable results. Typically, researchers apply the End Notch Flexure specimen, which is already used for static delamination...
journal article 2019
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Rans, C.D. (author), Michielssen, J. (author), Walker, M.S. (author), Wang, W. (author), Hoen-Velterop, Ludmila ’t (author)
A challenge in developing an in-depth understanding of the crack growth resistance of Additively Manufactured materials is the fact that their mechanical properties have been shown to be both process and part-geometry dependent. Up to now, no studies have investigated the influence of off-axis (beyond the three orthogonal build orientations)...
journal article 2018
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Wang, W. (author), Rans, C.D. (author), Benedictus, R. (author)
Mechanically fastened joints are susceptible to the presence of multiple-site damage (MSD) cracks in the critical fastener row. Different from the MSD growth in joints consisting of metallic substrates, the two coupled metal crack growth and interfacial delamination propagation failure mechanisms in Fibre Metal Laminates (FMLs) make the...
journal article 2018
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Wang, W. (author), Rans, C.D. (author), Benedictus, R. (author)
In the context of the prevalence of thin-walled metallic aerospace structures, the added resistance to crack propagation offered by a built-up structure is desirable from a damage tolerance standpoint. The analysis of failure in such structures, however, is limited by the lack of crack opening solutions. This paper develops analytical models...
journal article 2018
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Schuurman, M.J. (author), Saunders, G.N. (author), Rans, C.D. (author)
conference paper 2018
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