Searched for: subject:"Strain"
(1 - 20 of 148)

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Daneshjoo, Z. (author), Amaral, L. (author), Alderliesten, R.C. (author), Shokrieh, M. M. (author), Fakoor, M. (author)
This paper demonstrates how the critical strain energy density in the delamination tip vicinity may be used to explain the physics of delamination growth under mixed mode I/II. A theory previously proposed to physically relate mode I and mode II delamination growth is further extended towards describing the onset of mixed mode I/II...
journal article 2019
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Quiros Solano, W.F. (author)
Drug development is a complex, time-consuming (10 - 15 years) and expensive process. For a new medicine to reach the market, the net expenses covered by the pharmaceutical industry have been estimated to be around $2.6 billion. Nevertheless, the risk of finding adverse effects or toxicity cases once the drug is already on the market is still...
doctoral thesis 2019
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Giovani Pereira Castro, S. (author), Donadon, Maurício V. (author), Guimarães, Thiago A.M. (author)
The increasing need for automatic mesh generation has led to the development of efficient triangulation algorithms that are able to discretize any 2D or 3D domain. Modern finite element formulations based on strain smoothing techniques (SFEM) provide enhanced convergence properties, preventing yet the stiffening behavior of triangular meshes....
journal article 2019
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Irani, N. (author), Nicola, L. (author)
During plastic deformation, metal surfaces roughen and this has a deleterious impact on their tribological performance. It is therefore desirable to be able to predict and control the amount of roughening caused by subsurface plasticity. As a first step, we focus on modelling plastic deformation during contact shearing of an FCC metallic...
journal article 2019
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Yasin, Saima (author), Shakeel, A. (author), Iqbal, Tanveer (author), Ahmad, Fazeel (author), Mehmood, Hamayoun (author), Luckham, Paul F. (author), Ullah, Nehar (author)
Nano-indentation is an interesting tool for analyzing nano-scale mechanical properties. The analysis of nano-mechanical properties as a function of experimental conditions is very critical for designing engineering components. In this study, nano-indentation experiments were performed by considering different values of amplitude (1, 5, 10 nm...
journal article 2019
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Merkel, Matthias (author), Baumgarten, K. (author), Tighe, B.P. (author), Manning, M. Lisa (author)
We present an approach to understand geometric-incompatibility–induced rigidity in underconstrained materials, including subisostatic 2D spring networks and 2D and 3D vertex models for dense biological tissues. We show that in all these models a geometric criterion, represented by a minimal length ℓ¯min, determines the onset of prestresses and...
journal article 2019
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Lantsoght, E.O.L. (author), Yang, Y. (author), van der Veen, C. (author), Hordijk, D.A. (author), de Boer, A (author)
Existing bridges with large uncertainties can be assessed with a proof load test. In a proof load test, a load representative of the factored live load is applied to the bridge at the critical position. If the bridge can carry this load without distress, the proof load test shows experimentally that the bridge fulfills the requirements of the...
journal article 2019
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Shakeel, A. (author), van Kan, Paul J.M. (author), Chassagne, C. (author)
A modified version of the commercially available RheOptiCAD® was developed to visualize the microscopic structural changes occurring in concentrated suspensions, such as the break-up of flocs in clay suspensions, under shearing action. This is made possible by replacing the inverted microscope used in the traditional RheOptiCAD® set-up by an...
journal article 2019
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Chaves Figueiredo, S. (author), Romero Rodriguez, C. (author), Ahmed, Zeeshan Y. (author), Bos, D. H. (author), Xu, Y. (author), Salet, Theo (author), Copuroglu, Oguzhan (author), Schlangen, E. (author), Bos, Freek P. (author)
New additive manufacturing methods for cementitious materials hold a high potential to increase automation in the construction industry. However, these methods require new materials to be developed that meet performance requirements related to specific characteristics of the manufacturing process. The appropriate characterization methods of...
journal article 2019
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Daneshjoo, Z. (author), Shokrieh, M. M. (author), Fakoor, M. (author), Alderliesten, R.C. (author), Zarouchas, D. (author)
In order to understand the physics of the delamination onset in laminated composites, an experimental investigation of delamination growth is presented. The main objective of this paper is to demonstrate that delamination onset occurs at lower values than Gc defined by the ASTM standards, and that the strain energy release rate level at which...
journal article 2019
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Nazeer, N. (author), Groves, R.M. (author), Benedictus, R. (author)
Over the years, many shape sensing methods have been developed with technologies including optical fibre, PZT and fringe projection. Among them, optical fibres have gained a lot of attention due to their unobtrusive nature when either surface mounted or embedded in the structure. Optical fibre Bragg gratings (FBG) are currently employed for...
conference paper 2019
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Demircilioğlu, Erman (author), Teomete, Egemen (author), Schlangen, E. (author), Baeza, F. Javier (author)
Cement composites, with enhanced electrical properties, have been investigated as multifunctional composites, with application as strain sensors, heating elements or anode in different electrochemical technique. In this work, several aspects regarding the practical application of smart concrete with the addition of brass fibers have been...
journal article 2019
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Versteijlen, W.G. (author)
Offshore wind generated electricity is currently one of the most promising sources of energy to contribute in creating a sustainable global energy mix. The latter is essential for minimising the detrimental impact of human-induced accelerated climate change. The cost of offshore wind power has strongly decreased over the past years due to ...
doctoral thesis 2018
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Schmack, T. (author), Morgado Martins Filipe, T.M. (author), Deinzer, G. (author), Kassapoglou, C. (author), Walther, F. (author)
The usage of fibre-reinforced composites in automotive body structures is still a rarity. The main goal in body structure development is to design lightweight structures as cost-efficient as possible. This research contributes to the approach of maximal material usage by considering the strength increase of a carbon-epoxy laminate with...
journal article 2018
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Chang, L. (author), Dollevoet, R.P.B.J. (author), Hanssen, R.F. (author)
Satellite radar interferometry (InSAR) is an emerging technique to monitor the stability and health of line-infrastructure assets, such as railways, dams, and pipelines. However, InSAR is an opportunistic approach as the location and occurrence of its measurements (coherent scatterers) cannot be guaranteed, and the quality of the InSAR...
journal article 2018
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Rajabzadehdizaji, Aydin (author), Heusdens, R. (author), Hendriks, R.C. (author), Groves, R.M. (author)
In the past few decades, fibre Bragg grating (FBG) sensors have gained a lot of attention in the field of distributed point strain measurement. One of the most interesting properties of these sensors is the presumed linear relationship between the strain and the peak wavelength shift of the FBG reflected spectra. However, subjecting sensors to a...
journal article 2018
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Arechabaleta Guenechea, Z. (author), van Liempt, P. (author), Sietsma, J. (author)
Understanding the intricate structure of dislocations in metals is a major issue in materials science. In this paper we present a comprehensive approach for the characterisation of dislocation networks, resulting in accurate quantification and significantly increasing the insight into the dislocation structure. Dislocation networks in metals...
journal article 2018
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Lazari, Maria (author), Sanavia, Lorenzo (author), di Prisco, Claudio (author), Pisano, F. (author)
This paper reappraises Perzyna-type viscoplasticity for the constitutive modelling of granular geomaterials, with emphasis on the simulation of rate/time effects of different magnitude. An existing elasto-plastic model for sands is first recast into a Perzyna viscoplastic formulation and then calibrated/validated against laboratory test...
journal article 2018
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Agarwal, G. (author), Gao, H. (author), Amirthalingam, M. (author), Hermans, M.J.M. (author)
In situ strain evolution during laser welding has been measured by means of digital image correlation to assess the susceptibility of an advanced high strength automotive steel to solidification cracking. A novel method realised using auxiliary illumination and optical narrow bandpass filter allowed strain measurements as close as 1.5 mm from...
journal article 2018
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Yang, Huiru (author), Wang, Zeping (author), Ye, H. (author), Zhang, Kai (author), Chen, X. (author), Zhang, G.Q. (author)
Sensitive materials for formaldehyde (HCHO) sensor need high sensitivity and selectivity. The research on two dimensional (2D) sensitive material is growing, and most studies focus on the pristine or modified graphene. So it is essential to introduce other 2D materials into HCHO gas sensor. In this report, the adsorption behaviors of organic...
journal article 2018
Searched for: subject:"Strain"
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