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Jens Kjær Jørgensen

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Jens Kjær Jørgensen

Seniorforsker

Jens Kjær Jørgensen
Telefon: 982 43 957
Mobil: 982 43 957
Avdeling: Materialer og nanoteknologi
Kontorsted: Oslo

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Numerical/Experimental Study Of The Impact and Compression After Impact On GFRP Composite For Wind/Marine Applications

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1421385

Damage development due to impact needs to be understood to evaluate the consequences of impact on composite structures. This study concentrates on modelling low velocity impact and consequent compression after impact (CAI) test on thick industrial composites made from glass fiber epoxy produced by v...

Forfattere Perillo Giovanni Jørgensen Jens Kjær
År 2016
Type Tidsskriftsartikkel
Publikasjon

Aging of polyamide 11. Part 1: Evaluating degradation by thermal, mechanical, and viscometric analysis

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1191891

Hydrolytic degradation at elevated temperatures is a key reason for failure in offshore flexible risers. In this article, the aging of polyamide 11 in deoxygenated water at 90°C and 120°C was studied. Tensile and dynamic mechanical thermal analysis tests were performed to measure changes in mechanic...

Forfattere Mazan Tobiasz Berggren Randi Jørgensen Jens Kjær Echtermeyer Andreas
År 2015
Type Tidsskriftsartikkel
Publikasjon

Aging of polyamide 11. Part 2: General multiscale model of the hydrolytic degradation applied to predict the morphology evolution

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1259050

Accelerated aging tests are the conventional way to evaluate long-term degradation of polymers, in particular for offshore flexible risers. In this article, a multiscale model has been developed combining diffusion, chemical kinetic reactions, structure–property relationships, and composite models t...

Forfattere Mazan Tobiasz Jørgensen Jens Kjær Echtermeyer Andreas
År 2015
Type Tidsskriftsartikkel
Publikasjon

Aging of polyamide 11. Part 3: Multiscale model predicting the mechanical properties after hydrolytic degradation

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1259057

A holistic general multiscale model of polymer degradation has been applied to predict the mechanical properties of polyamide 11 after the hydrolytic ageing. Results for elastic modulus, tensile strength, and embrittlement threshold have been compared with experimental aging in deoxygenated water at...

Forfattere Mazan Tobiasz Jørgensen Jens Kjær Echtermeyer Andreas
År 2015
Type Tidsskriftsartikkel
Publikasjon

The mechanical properties of a model hydrogenated nitrile butadiene rubber (HNBR) following simulated sweet oil exposure at elevated temperature and pressure

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1250648

A typical carbon black reinforced hydrogenated nitrile butadiene rubber (HNBR) was exposed to a mix of hydrocarbons (toluene, heptane and cyclohexane) at elevated temperatures and pressure in order to chemically age the material. The effect of this exposure on the mechanical properties is reported; ...

År 2015
Type Tidsskriftsartikkel
Publikasjon

The effect of hydrocarbon ageing on the mechanical properties, apparent crosslink density and CO2 diffusion of a hydrogenated nitrile butadiene rubber (HNBR)

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1259840

The effect of ageing in a sweet oil environment on the tensile properties, apparent crosslink density, CO2 diffusion and Shore hardness of a typical carbon black reinforced hydrogenated nitrile butadiene rubber (HNBR) is presented. Different ageing conditions yielded materials with different propert...

År 2015
Type Tidsskriftsartikkel
Publikasjon

Measuring deformation and mechanical properties of weld lines in short fibre reinforced thermoplastics using digital image correlation

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1144554

Weld lines in injection moulded short fibre reinforced thermoplastics can significantly reduce the mechanical strength of a product. However, knowledge about the mechanical properties in the weld line region is limited. A reason for this is the difficulty in measuring strains at small scales. In thi...

Forfattere Jørgensen Jens Kjær Kalus Jakub
År 2014
Type Tidsskriftsartikkel
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