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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Fischer, C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2021Experimental investigation of the damage characteristics of two cast aluminium alloys: Pt.I - Temperature dependent low cycle and thermomechanical fatigue behaviorcitations
- 2021Additive manufacturing of high-strength eutectic aluminium-nickel alloys - processing and mechanical propertiescitations
- 2021Introduction of an innovative corrosion-protective alkyd steel coating based on a novel layered aluminum tripolyphosphate loaded with 6-amino hexanoic acid (ATP-6-AHA)citations
- 2021Experimental investigation of the damage characteristics of two cast aluminium alloys: Pt.II - LCF/HCF and TMF/HCF loading with special focus on the short crack growth behaviorcitations
- 2021Experimental investigation of the damage characteristics of two cast aluminium alloys: Pt.III - Influence of the local microstructure and initial defect size on the fatigue propertiescitations
- 2020Computational assessment of the microstructure-dependent thermomechanical behaviour of AlSi12CuNiMg-T7 - methods and microstructure-based finite element analysescitations
- 2019Characterization of strain bursts in high density polyethylene by means of a novel nano creep testcitations
- 2018Highly Efficient Encapsulation and Phase Separation of Apolar Molecules by Magnetic Shell-by-Shell-Coated Nanocarriers in Watercitations
- 2017Damping of carbon fibre and flax fibre angle-ply composite laminatescitations
- 2017Influencing hardness and wear during the dynamic tempered microinjection molding process by considering isothermal holding time
- 2017Evolution of the sp2 content and revealed multilayer growth of amorphous hydrogenated carbon (a-C:H) films on selected thermoplastic materialscitations
- 2016Amorphous hydrogenated carbon (a-C:H) depositions on polyoxymethylene: Substrate influence on the characteristics of the developing coatingscitations
- 2016Morphological and Chemical Evolution of Gradually Deposited Diamond-Like Carbon Films on Polyethylene Terephthalate: From Subplantation Processes to Structural Reorganization by Intrinsic Stress Release Phenomenacitations
- 2016Characteristics of industrially manufactured amorphous hydrogenated carbon (a-C:H) depositions on high-density polyethylenecitations
- 2015The bennett linkage as a hinge application
- 2015Surface morphology and grain analysis of successively industrially grown amorphous hydrogenated carbon films (a-C:H) on siliconcitations
- 2014New generation of forging steels for cyclic loaded safety components with improved fatigue propertiescitations
- 2014Piezo based testing facilities to discover new areas in material characterisation
- 2013Dynamic response of a heavy ball rolling inside a spherical dish under external excitation
- 2013Analytic model of a ball rolling on a spherical surface under harmonic kinematic excitation
- 2012Piezoelectric driven testing facilities to research the very high cycle fatigue regime
- 2010Carbon outclasses wood in racket paddles: Ratings of expert and intermediate tennis playerscitations
- 2009Nanocrystalline microstructure of mechanically alloyed MgB<inf>2</inf> superconductor precursor powder for bulk and tape fabrication and implications on the superconductivity
- 2008INFLUENCE OF SUPERPLASTIC FORMING CONDITIONS OF 7475 ALLOY ON ITS MICROSTRUCTURE
- 2006Dynamic properties of materials for alpine skiscitations
- 2005Effects of oxide particle addition on superconductivity in nanocrystalline MgB<inf>2</inf> bulk samplescitations
- 2005Stoichiometry dependence of superconductivity and microstructure in mechanically alloyed MgB <inf>2</inf>citations
- 2005Mechanically alloyed MgB<inf>2</inf> superconductors: Microstructure, tape formation and critical currents
- 2005Enhanced critical current density in nanocrystalline mechanically alloyed MgB <inf>2</inf> bulk and Fe sheathed tapescitations
- 2004Critical current densities of superconducting MgB<inf>2</inf> tapes prepared on the base of mechanically alloyed precursorscitations
- 2004Microstructure and impurity dependence in mechanically alloyed nanocrystalline MgB<inf>2</inf> superconductorscitations
- 2003Preparation of MgB<inf>2</inf> tapes using a nanocrystalline partially reacted precursorcitations
- 2003Low temperature preparation of MgB<inf>2</inf> tapes using mechanically alloyed powdercitations
- 2003Critical Currents in Bulk MgB <inf>2</inf> Superconductors
Places of action
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article
Characterization of strain bursts in high density polyethylene by means of a novel nano creep test
Abstract
<p>Recent nanoindentation experiments have shown that in semi-crystalline polymers, strain bursts emerge during creep experiments. A shortcome of nanoindentation is that due to the inhomogeneous stress field, a critical stress for the onset of strain bursts cannot be determined, and the resolution of the method seems to be limited. Since the strain bursts in polymers are in the nm range, an extremely high resolution in deformation measurement is necessary. Such a resolution is provided by modern solid state rheometers having a resolution < 10<sup>-6</sup> rad. With such a facility, in this work single strain bursts in PE-HD have been investigated in creep mode at stresses as low as < 0.5MPa. As the strain bursts only occur rarely, hundreds of creep experiments were carried out and evaluated statistically. Through variation of the temperature and the stress, the activation energy for the strain bursts was determined as 0.65 (±0.06) eV. In addition, negative strain bursts (contrary to the direction of deformation) with an activation energy of 0.49 (±0.08) eV and post-oscillations after strain bursts could be observed for the first time. In summary the new method represents a powerful tool for a quantitative characterization of strain bursts and gives a new insight to dislocation kinetics in semi-crystalline polymers.</p>