document

Quantifying the impact of stiffness distributions on the dynamic behaviour of railway transition zones

Jain, A. (author), Marykovskiy, Yuriy (author), Metrikine, A. (author), van Dalen, K.N. (author)

Railway transition zones (RTZs) are regions where abrupt track stiffness changes occur that may lead to dynamic amplifications and subsequent track deterioration. The design challenges for these zones arise due to variations in material properties in both the depth (trackbed layers composed of different materials) and longitudinal directions of...

journal article 2024

document

Usage of FBG fiber optic sensors to monitor the structural behaviour of a geopolymer concrete structural member

Chan, Ji Fan (author)

Geopolymer concrete, a relatively new building material has been suggested as an alternative to Ordinary Portland Cement (OPC) based concretes for within the building sector, due to it having a relatively low CO2 emission during production. An issue with geopolymer concrete however, is that high amounts of early age creep, shrinkage and decrease...

master thesis 2023

document

Thermo-mechanical numerical analyses in support of fire endurance assessment of ordinary soda-lime structural glass elements

Bedon, Chiara (author), Louter, P.C. (author)

Purpose: Glass material is largely used for load-bearing components in buildings. For this reason, standardized calculation methods can be used in support of safe structural design in common loading and boundary conditions. Differing from earlier literature efforts, the present study elaborates on the load-bearing capacity, failure time and...

journal article 2023

document

Comparison of different numerical modelling approaches for the assessment of the out-of-plane behaviour of two-leaf stone masonry walls

Murano, Antonio (author), Mehrotra, A.A. (author), Ortega, Javier (author), Rodrigues, Hugo (author), Vasconcelos, Graça (author)

This work compares the ability of different numerical modelling approaches to simulate the out-of-plane behaviour of two-leaf stone masonry walls with different masonry bond configurations: an irregular drystone stone masonry wall and a masonry wall with roughly cut regular stone units. Finite element modelling, considering both a micro and...

journal article 2023

document

Quantification of Effective Flow Resistivity for Parametric Assessment of Pervious Concrete by Using Ultrasonic Pulse Velocity Method

Singh, Avishreshth (author), Biligiri, Krishna Prapoorna (author), Sampath, Prasanna Venkatesh (author)

The use of nondestructive ultrasonic pulse velocity (UPV) testing to assess the hardened properties of pervious concrete (PC) mixtures is an emerging research area. Further, UPV has been successfully used to determine the effective flow resistivity (EFR) of asphalt concrete and cement concrete pavements. However, no research studies have...

journal article 2023

document

Structural performance of geopolymer concrete: Shear and flexural behavior of a prestressed girder with cast in-situ topping under short-term loading

Paredes Pineda, Jose (author)

Upscaling of two geopolymer concrete mixtures in an individual prestressed girder in self-compacting geopolymer concrete (SCGC) with a topping layer cast in-situ by a ready-mix geopolymer concrete provider. The objective is to study the different material properties of the mixtures, determine their impact in the structural performance and define...

master thesis 2022

document

Acquiring material properties of objects for tactile simulation through point cloud scans

Yang, Haocheng (author)

Tactile internet enables communication in a new layer of immersion, touch. It has the potential to transform the landscape of digital communication. However, the achievable scale of tactile internet is severely limited by its 1 ms round-trip latency. We propose a workaround for the latency through tactile simulation, which can bypass the...

bachelor thesis 2022

document

The effect of thermal fatigue on mechanical properties of thermoset composites

Bruinenberg, Ingmar (author)

Composite structures are used more frequently in newly designed aircrafts. This results in new difficulties compared to conventional metals during operational life. Especially, the material properties of two different materials can cause side effects, which are unwanted in a structure, for example thermal stresses. Many reports have been written...

master thesis 2022

document

Material property characterisation of tissue engineered fibrous cap structures: An inverse Finite Element study

Kurucz, Daniel (author)

Introduction: Atherosclerosis is characterised by the buildup of plaque within the arterial wall and it is often the underlying cause effect of deaths related to cardiovascular diseases. Thin cap fibroatheromas are plaques with a high risk of causing clinical events due to rupture and espousal of thrombogenic components to the bloodstream. The...

master thesis 2022

document

Investigating Surface Fractures and Materials Behavior of Cultural Heritage Buildings Based on the Attribute Information of Point Clouds Stored in the TLS Dataset

Alkadri, Miktha Farid (author), Alam, S. (author), Santosa, Herry (author), Yudono, Adipandang (author), Beselly, S.M. (author)

To date, the potential development of 3D laser scanning has enabled the capture of high-quality and high-precision reality-based datasets for both research and industry. In particular, Terrestrial Laser Scanning (TLS) technology has played a key role in the documentation of cultural heritage. In the existing literature, the geometric properties...

journal article 2022

document

Characterization of robotized CMT-WAAM carbon steel

Tankova, T. (author), Andrade, David (author), Branco, Ricardo (author), Zhu, Carlos (author), Rodrigues, Dulce (author), Simões da Silva, Luís (author)

This paper analyses the microstructural and mechanical properties of carbon steel coupons produced by CMT-WAAM. The strategy adopted in the fabrication of the test specimens using a robotised facility is explained. Then, the results of the mechanical characterization performed using as-built and machined samples, extracted in several...

journal article 2022

document

On the Painterly Depiction of Materials: An Interdisciplinary Study on the Depiction and Perception of Materials within Paintings

van Zuijlen, M.J.P. (author)

The world around us is filled with materials. Our ability of visual material perception informs us how to navigate and interact with our environment. It tells us, for example, whether food is fresh, if a chair is strong enough to sit on, how much force to use to pick up a glass, etc. Painters have studied how to depict the world and the...

doctoral thesis 2021

document

Solar Geometry in Performance of the Built Environment: An Integrated Computational Design Method for High-Performance Building Massing Based on Attribute Point Cloud Information

Alkadri, M.F. (author)

As part of the passive design strategy, the development of computational solar envelopes plays a major role to construct a cooperative environmental performance exchange between new buildings and their local contexts. However, the state-of-the-art computational solar envelopes pose a great challenge in understanding site characteristics from a...

doctoral thesis 2021

document

Study of DC partial discharge on dielectric surfaces: Mechanism, patterns and similarities to AC

Abdul Madhar, S. (author), Mor, A. R. (author), Mraz, Petr (author), Ross, Robert (author)

This paper presents the investigation on surface discharge behavior of various dielectric samples under DC. It sequentially develops the knowledge base for the study and analysis of the partial discharge (PD) defect with the goal of PD defect identification under DC. In order to facilitate this, the material properties of the dielectric are...

journal article 2021

document

Steel 3D printing for structures: An explorative study on the tear-out strength of a pin or bolt in a Wire and Arc Additively Manufactured carbon steel plate

Kotteman, Geerte (author)

Additive manufacturing (AM), or 3D printing, is emerging as a technology for different applications made of steel. It is expected that in the coming years the construction industry will benefit from the free and lightweight forms that can be fabricated and the possible material savings. A few experimental results of 3D printed stainless steel...

master thesis 2020

document

Influence of nickel precursors on the properties and performance of Ni impregnated zeolite 5A and 13X catalysts in CO₂ methanation

Wei, L. (author), Haije, W.G. (author), Kumar, Narendra (author), Peltonen, Janne (author), Peurla, Markus (author), Grenman, L.O.H. (author), de Jong, W. (author)

Zeolite 13X and 5A supported Ni catalysts were synthesized for CO₂ methanation using the evaporation impregnation method. The influence of using different Ni precursors (nitrate, citrate, and acetate) as well as calcination temperatures on the catalyst properties and performance were investigated. XRD, SEM-EDX, TEM, STEM-EDX, N<sub...

journal article 2020

document

An integrated approach to subtractive solar envelopes based on attribute information from point cloud data

Alkadri, M.F. (author), De Luca, Francesco (author), Turrin, M. (author), Sariyildiz, I.S. (author)

As a passive design strategy, solar envelopes play a significant role in determining building mass based on desirable sun access during a predefined period. Nowadays, advancements in the area of computational tools permit designers to develop new methods for establishing solar envelopes. However, current approaches lack an understanding of the...

journal article 2020

document

Improving the Blade Root Laminate of a Wind Turbine

Chhabra, Arjun (author)

Suzlon's wind turbine blades are connected to the pitch bearing and hence the hub using a T-Bolt (Ikea) connection. The merits of this bolted connection and the experience in its usage has led to its continuous use in the wind industry. Engineers at Suzlon believe that this connection can be optimized by improving the net-tension strength and...

master thesis 2019

document

A Novel Approach to Estimating the Material Properties of Atherosclerotic Plaque Tissue

van den Berg, Ronald (author)

The majority of cardiovascular clinical events, which are the main causes of mortality and morbidity worldwide, are caused by atherosclerotic plaque rupture. This biomechanical event occurs when the local plaque stresses exceed its strength. The plaque stresses can be assessed by computational models to predict these events. Current approaches...

master thesis 2019

document

A computational workflow to analyse material properties and solar radiation of existing contexts from attribute information of point cloud data

Alkadri, M.F. (author), Turrin, M. (author), Sariyildiz, I.S. (author)

This paper investigates a prospective application of point cloud data in supporting the contextual analysis of the built environment during the conceptual design process. Often, the complexity of site information causes architects to neglect several relevant properties that may affect environmental performance analysis, especially when dealing...

journal article 2019