Pages
- 1
- 2
- document
-
Prapavesis, Alexandros (author), Kopana, Penelope (author), Wu, Weijing (author), Soete, Jeroen (author), Mosleh, Yasmine (author), Van Vuure, Aart Willem (author)In this study, the tensile and bending properties of silk fibre composites using three (0, 90) woven fabrics with different architectures are investigated. The tensile results show that the silk composites can achieve high strain to failure (more than 20%) and toughness (up to 13 MJ/m3), which can be further manipulated based on the architecture...journal article 2023
- document
-
Pascoe, J.A. (author), Tu, W. (author), Biagini, D. (author), Alderliesten, R.C. (author)Fibre reinforced polymer composites have found increasing use in aircraft structures. This means that fleet managers need damage assessment tools for such materials, in order to decide on appropriate sustainment strategies. Developing such tools is hindered by the difficulty of generalising from lab tests to predict the behaviour of full-scale...conference paper 2023
- document
-
Biagini, D. (author), Pascoe, J.A. (author), Alderliesten, R.C. (author)Impacts on carbon fiber reinforced composites (CFRP) can produce a complex internal damage comprising multiple delaminations, which is hard to detect from visual inspection. This situation is known as barely visible impact damage (BVID). Considering that every airplane faces several impacts during its operational life, and that the majority of...conference paper 2023
- document
-
Verma, Amrit Shankar (author), Yan, Jiquan (author), Hu, Weifei (author), Jiang, Zhiyu (author), Shi, Wei (author), Teuwen, Julie J.E. (author)A fiber-reinforced composite wind turbine blade (WTB) is exposed to numerous impact threats during its service life causing damages that can be detrimental to its structural integrity. Currently, impact loads are not considered during blade design, so high safety factors are introduced, which result in a conservative design. However, as wind...review 2023
- document
-
van Hoorn, N. (author), Kassapoglou, C. (author), Turteltaub, S.R. (author), van den Brink, Wouter (author)Impact experiments of thick fabric carbon/epoxy laminate specimens, with small thickness ratio, are conducted at distinct energy levels and thicknesses to characterise the damage process. These specimens and loading conditions are representative of a new generation of critical structural components in aviation, such as wing spars, landing...journal article 2022
- document
-
Pascoe, J.A. (author)Using the slow-growth certification approach for damage tolerance of composite aircraft structures has the potential to reduce their weight. Applying this approach requires that damage growth is slow, stable, and predictable. However, currently available methods do not allow for sufficiently accurate predictions, due to knowledge gaps related...journal article 2021
- document
-
Pascoe, J.A. (author)Impact damage in CFRP structures is currently managed using the ‘no-growth’ concept, meaning that damage is not allowed to grow under fatigue loading. This requires that stresses in the material are kept below the fatigue limit, imposing a significant weight penalty. A ‘slow-growth’ concept would allow more efficient structural designs, but...journal article 2020
- document
-
Kupski, J.A. (author), Zarouchas, D. (author), Teixeira De Freitas, S. (author)The aim of this study is to evaluate the enhanced off-axis properties of thin plies to improve the performance of adhesively bonded carbon fiber reinforced polymers. Single lap bonded joints with three different ply thicknesses of 200 μm, 100 μm and 50 μm were tested under quasi-static tensile loading. Acoustic Emission and Digital Image...journal article 2020
- document
-
Saleh, M. (author), El-Dessouky, Hassan M. (author), Saeedifar, M. (author), Teixeira De Freitas, S. (author), Scaife, Richard J. (author), Zarouchas, D. (author)This paper investigates the effect of the fabric architecture and the z-binding yarns on the compression after multiple impacts behavior of composites. Four fiber architectures are investigated: non-crimp fabric (NCF), 2D plain weave (2D-PW), 3D orthogonal plain (ORT-PW) and twill (ORT-TW) weave. The specimens were subjected to single and...journal article 2019
- document
-
Davila, C.G. (author), Bisagni, C. (author)The fatigue life and damage tolerance of composite stiffened panels with indentation damage are investigated experimentally using single-stringer compression specimens. The indentation damage was induced to one of the two flanges of the stringer of every panel. The advantages of indentation compared to impact are the simplicity of application...journal article 2018
- document
-
Bisagni, C. (author), Furfari, Domenico (author), Pacchione, Marco (author)An experimental study has been carried out to investigate the behaviour of co-bonded carbon fibre reinforced plastics joints with a novel design incorporating a through the thickness local reinforcement. Different specimens were manufactured to investigate static and fatigue behaviour, as well as delamination size after impact and damage...journal article 2018
- document
-
Davila, CG (author), Bisagni, C. (author)The fatigue life of composite stiffened panels with indentation damage was investigated experimentally using single stringer compression specimens. Indentation damage was induced on one of the two flanges of the stringer. The experiments were conducted using advanced instrumentation, including digital image correlation, passive thermography, and...conference paper 2016
- document
-
Şen, I. (author)The lower wing skin is one of the primary structures of an aircraft. To further improve the fatigue and damage tolerance (F&DT) performance of the lower wing, fibre metal laminates (FML) are proposed as a new material solution. FML consist of thin metal layers bonded with layers of fibre composites. This concept has potentially a large design...doctoral thesis 2015
- document
-
Bürger, D.B. (author)Aerospace structures have been long dealing with the safety versus weight issue. Lighter airplanes are cheaper to operate, however, they may face a safety issue because of the reduced fatigue life. Consequently, a heavier/safer structure is designed. Adhesive bonding is a joining technique that offers potential for improvement in the fatigue...doctoral thesis 2015
- document
-
Nagelsmit, M.H. (author)Composites are notorious for their poor impact behaviour. Delaminations seriously decrease the compressive strength of the material after impact. Laminates made from woven fabric show in general more beneficial impact behaviour than laminates with unidirectional layers, but their manufacturing process is harder to automate. The new fibre...doctoral thesis 2013
- document
-
Lemmen, H.J.K. (author)Friction stir welding is a young welding process with high potential to replace riveted joints in aerospace structures like the fuselage. Friction stir welding is a robust process and capable of welding high strength aluminum alloys. Therefore it can lead to both costs and weight savings. To substitute riveted joints by friction stir welded...doctoral thesis 2010
- document
-
Lopes, C.S. (author)For a long time, the application of composite materials was restricted to military aircraft and secondary structures of commercial aircraft. Furthermore, the design possibilities offered by composite laminates were narrowed to quasi-isotropic configurations due to their closer behaviour with monolithic materials, hence with a more predictable...doctoral thesis 2009
- document
- Chen, D. (author) doctoral thesis 1991
- document
- Chen, D. (author) report 1990
- document
-
Wanhill, R.J.H. (author), Schra, L. (author), 't Hart, W.G.J. (author)New impetus to continued use of alximinium alloys in major structural areas of aircraft has been given by the development of aluminium-lithium alloys. However, qualification of these new materials for service requires extensive testing and evaluation, preferably in international cooperative programmes. The evaluation of aluminium-lithium alloys...report 1989
Pages
- 1
- 2