- document
-
Meeder, M. (author), Mauret, T. (author), Booij, S. (author), Braat, J. (author), Faehnle, O. (author)The possibilities of iTIRM, an in-process surface measurement tool, are explored in this research. Experiments are done to test the applicability for qualifying and optimising finishing processes for optical surfaces. Several optical glasses, different polishing agents and ductile grinding are included in these experiments. It is concluded that...conference paper 2003
- document
-
Girão Coelho, A.M. (author), Bijlaard, F.S.K. (author)The design of joints to European standard EN 1993 within the semi-continuous/partially restrained philosophy is restricted to steel grades up to S460. With the recent development of high performance steels, the need for these restrictions should be revisited. The semicontinuous joint modelling can be adopted as long as the joint develops...journal article 2010
- document
-
Sierra-Beltran, M.G. (author)In order to turn a brittle cement matrix into a ductile composite different types of man-made fibres such as steel, glass and polyvinyl alcohol are currently used as reinforcement, as well as some natural fibres. Compared to synthetic fibres, natural fibres are more easily available worldwide and they are friendlier to the environment since less...doctoral thesis 2011
- document
-
Sayed Moqadas, M. (author)Almost 3500 years ago, Egyptians used straw to reinforce mud blocks for construction purposes. Later on, concrete and metals were introduced and the interest for NFC was reduced. In 1900 asbestos fibres were introduced to produce light weight and durable elements; however in 1970 it was discovered that asbestos is unhealthy. Therefore, in 20th...master thesis 2014
- document
-
Dobrescu, M. (author)In connections of steel structures stress concentrations occur due to the rapid geometric changes in the cross section. If the material has sufficient ductility then, due to plastic deformations, forces are redistributed so there will be equilibrium in the internal forces. In design codes this is accounted for by imposing certain requirements...master thesis 2014
- document
-
Samaee, M. (author), Najafi, S. (author), Eivani, A. R. (author), Jafarian, H. R. (author), Zhou, J. (author)In this research, grain refinement through severe plastic deformation (SPD) in combination with a thermal treatment to create a fine initial grain structure with a high degree of supersaturation was taken as a viable approach to achieving simultaneous increases in the hardness, strength and ductility of the aluminum alloy AA6063 during...journal article 2016
- document
-
Santarsiero, Manuel (author), Louter, P.C. (author), Nussbaumer, Alain (author)The use of glass material for structural components has drastically increased in the last decade. Among others, a laminated connection is a type of adhesive joint that makes use of foil interlayer adhesive to transfer forces between glass and metal parts. In this work, the use of embedded laminated connections is studied as connection between...journal article 2016
- document
-
Zahiri Esfahani, F. (author)Structural blast analysis is usually done with two load levels for different design stages; the Strength Level Blast, SLB, and the Ductility Level Blast, DLB. Strength Level Blast is the lower magnitude overpressure (with a higher frequency of occurrence and lower consequence) and Ductility Level Blast is the higher magnitude overpressure (with...master thesis 2016
- document
-
Šavija, B. (author), Lukovic, M. (author), Kotteman, Geerte (author), Chaves Figueiredo, S. (author), França de Mendonça Filho, F. (author), Schlangen, E. (author)Abstract In the past two decades, much research has been devoted to overcoming the inherent brittleness of cementitious materials. To that end, several solutions have been proposed, mainly utilizing fibres. One of the most promising classes of materials is strain hardening cementitious composite (SHCC). It utilizes PVA fibres, and it is...journal article 2017
- document
-
Cupac, Jagoda (author), Martens, Kenny (author), Nussbaumer, Alain (author), Belis, Jan (author), Louter, P.C. (author)This paper presents a study on post-tensioned glass beams in a statically indeterminate system. In order to increase the safety of structural glass beams, ductile reinforcement can be added to glass beam sections providing secondary load carrying mechanism in case of glass breakage. In the here investigated post-tensioned system, the...journal article 2017
- document
-
Investigating the size effect in SENB specimens with a triaxiality and Lode angle based damage modelCoppejans, Okko (author)This master thesis is built up around two questions. First: Is it possible to calibrate a ductile failure model, where the strain at failure is a function of stress triaxiality and Lode angle, using only a single SENB specimen? The failure model that is referred to describes local failure in a finite element model to simulate ductile fracture....master thesis 2017
- document
-
Jayananda, Nikhil (author)Strain hardening cementitious composite is a new generation material with increased ductility and improved cracking behaviour as compared to traditionally used Normal Strength Concrete (NSC). An important charactersitic of SHCC is the ability of the fibers (2% PVA) in the composite mixture to bridge the cracks and there by preventing...student report 2017
- document
-
Cao, Pinqiang (author), Wu, Jianyang (author), Zhang, Zhisen (author), Fang, Bin (author), Peng, Li (author), Li, Tianshu (author), Vlugt, T.J.H. (author), Ning, Fulong (author)A sound knowledge of fundamental mechanical properties of water ice is of crucial importance to address a wide range of applications in earth science, engineering, as well as ice sculpture and winter sports, such as ice skating, ice fishing, ice climbing, bobsleighs, and so on. Here, we report large-scale molecular dynamics (MD) simulations...journal article 2018
- document
-
Nedeljković, Marija (author), Lukovic, M. (author), van Breugel, K. (author), Hordijk, D.A. (author), Ye, G. (author)This paper presents a development of a ductile alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) based composite as an environmentally friendly material for structural concrete application. For this purpose, polyvinyl alcohol (PVA) fibres and sand aggregate were combined with alkali-activated paste. Workability,...journal article 2018
- document
-
Tran, Anh Tuan (author), Bernspång, Lars (author), Veljkovic, M. (author), Rebelo, Carlos (author), da Silva, Luís Simões (author)This paper describes a study of the S650 high strength steel material properties including the effect of cold-formed angle. Coupon specimens with different cold-formed angles (90°, 100°, 120°, 140°, 160°and 180°) and different thicknesses (4 mm and 6 mm) were examined. Relationships between cold-formed angle and yield stress as well as...journal article 2019
- document
-
Simons, E.C. (author), Weerheijm, J. (author), Sluys, Lambertus J. (author)Alumina ceramic is often used in armour systems. This material is known to have a brittle response under tensile loading, while a ductile response is found when sufficiently high pressures are reached. During projectile impact a ceramic material experiences both tensile loading and high pressures, hence fails in both a brittle and ductile way....journal article 2019
- document
-
li Piani, T. (author), Weerheijm, J. (author), Sluys, Lambertus J. (author)A local damage model has been recently developed for the numerical simulation of the static behaviour of adobe bricks. Mesh insensitivity of the local model was obtained by generalizing the damage delay concept based on a Dirichlet boundary condition decomposition integrated in an implicit solver. The regularization properties of the model...journal article 2019
- document
-
Zhang, Youyou (author), Liu, Yuqing (author), Xin, H. (author), He, Jun (author)Steel-concrete composite high bridge pier has been applied increasingly in China and around the world. Most applied steel type in the composite piers are H-shaped steel and steel pipe, while seldom research or practice is associated with angle steel. This paper conducted parametric study on the composite column with equal-leg angle steel and...journal article 2019
- document
-
Ben-Gera, Tal (author)Compressive membrane action is a phenomenon commonly found in reinforced concrete structures after significant cracking and deformation have taken place. In this thesis report, the potential benefit of CMA in immersed tubes subjected to fires is quantified through a finite element study. Furthermore, sensitivity studies are conducted in order to...master thesis 2019
- document
-
Yang, F. (author), Veljkovic, M. (author), Liu, Yuqing (author)Numerical analyses incorporating appropriate damage models provide an opportunity to predict the strength and deformation capacity of steel structures. This paper presents a practical calibration for the ductile damage model of S355 and high-strength steel S690Q, S700MC, S960Q based on tensile coupon test results. A combined linear and power...journal article 2020