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Fatigue-based model for the droplet impingement erosion incubation period of metallic surfaces

Slot, H. (author), Matthews, D. (author), Schipper, D. (author), van der Heide, E. (author)

article 2021

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Rain erosion resistance of injection moulded and compression moulded polybutylene terephthalate PBT

Slot, H.M. (author), IJzerman, R.M. (author), le Feber, M. (author), Nord-Varhaug, K. (author), van der Heide, E. (author)

Offshore wind turbine rotor diameters still increase. Blade tip velocities are up to 110 m/s, giving rise to more severe raindrop impact conditions and related erosion of the wind turbine blades. In the current work droplet impingement erosion tests were performed for injection moulded and compression moulded polybutylene terephthalate PBT. The...

article 2018

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A new star (sensor) is born

Leijtens, J. (author), Vliegenthart, W. (author), Lampridis, D. (author), Vacanti, G. (author), Monna, B. (author), Bechthum, E. (author), Hagenaars, K. (author), van der Heide, E. (author), Kruijff, M. (author), van Breukelen, E. (author), Lemair, A. (author)

conference paper 2017

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Finite Element Approach to Modeling Abrasive Wear Modes

Woldman, M. (author), van der Heide, E. (author), Tinga, T. (author), Masen, M.A. (author)

Machine components operating in sandy environments will wear because of the abrasive interaction with sand particles. In this work, a method is derived to predict the amount of wear caused by such abrasive action, in order to improve the maintenance concept of the components. A finite element model is used to simulate various tips scratching a...

article 2017

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Study the effect of surface texturing on the stress distribution of UHMWPE as a bearing material during rolling motion

Jamari, J. (author), Ismail, R. (author), Anwar, I.B. (author), Saputra, E. (author), Tauviqirrahman, M. (author), van der Heide, E. (author)

Tribological properties of materials used in biomedical implants will critically affect the performance of the implant. Ultra-high molecular weight polyethylene (UHMWPE) material is popular due to its great properties. Surface texturing is one of the methods to minimize friction and wear. In this study, the effect of surface texturing on the...

conference paper 2016

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Finite element analysis of the impingement on the acetabular liner rim due to wear of the acetabular liner surface

Saputra, E. (author), Anwar, I.B. (author), Ismail, R. (author), Jamari, J. (author), van der Heide, E. (author)

This workstudies the impingement on the rim of acetabular liner due to wear on the surface of acetabular liner using finite element simulation. A three dimensional contact model between a femoral head and an acetabular liner was developed. There are three steps in this simulation, i.e. creating the virtualwear on the surface of acetabular liner,...

conference paper 2016

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Fixation strength analysis of cup to bone material using finite element simulation

Anwar, I.B. (author), Saputra, E. (author), Ismail, R. (author), Jamari, J. (author), van der Heide, E. (author)

Fixation of acetabular cup to bone material is an important initial stability for artificial hip joint. In general, the fixation in cement less-type acetabular cup uses press-fit and screw methods. These methods can be applied alone or together. Based on literature survey, the additional screw inside of cup is effective; however, it has little...

conference paper 2016

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Finite element study of contact pressure distribution on inner and outer liner in the bipolar hip prosthesis

Saputra, E. (author), Anwar, I.B. (author), Ismail, R. (author), Jamari, J. (author), van der Heide, E. (author)

Wear in the hip prosthesis due to sliding contact as a product of human activity is a phenomenon which cannot be avoided. In general, there are two modelof hip prostheses which are widely used in total hip replacement, i.e. unipolar and bipolar models. Wear in the bipolar model is more complex than the unipolar model due to its contact motion....

conference paper 2016

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Biological and Tribological Assessment of Poly(Ethylene Oxide Terephthalate)/Poly(Butylene Terephthalate), Polycaprolactone, and Poly (L\DL) Lactic Acid Plotted Scaffolds for Skeletal Tissue Regeneration

Hendrikson, W.J. (author), Zeng, X. (author), Rouwkema, J. (author), van Blitterswijk, C.A. (author), van der Heide, E. (author), Moroni, L. (author)

Additive manufactured scaffolds are fabricated from three commonly used biomaterials, polycaprolactone (PCL), poly (L\DL) lactic acid (P(L\DL)LA), and poly(ethylene oxide terephthalate)/poly(butylene terephthalate) (PEOT/PBT). Scaffolds are compared biologically and tribologically. Cell-seeded PEOT/PBT scaffolds cultured in osteogenic and...

article 2016

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Abrasive wear based predictive maintenance for systems operating in sandy conditions

Woldman, M. (author), Tinga, T. (author), van der Heide, E. (author), Masen, M.A. (author)

Machines operating in sandy environments are damaged by the abrasive action of sand particles that enter the machine and become entrapped between components and contacting surfaces. In the case of the military services the combination of a sandy environment and the wide range of tasks to be fulfilled results in extreme and uncertain operating...

article 2015

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The role of the sliding direction against a grooved channel texture on tool steel: An experimental study on tactile friction

Zhang, S. (author), Rodriguez Urribarri, A. (author), Morales Hurtado, M. (author), Zeng, X. (author), van der Heide, E. (author)

To control tactile friction, that is the friction between fingertip and counter-body, the role of surface texture is required to be unveiled and defined. In this research, an experimental approach is used based on measuring tactile friction for directional texture (grooved channel) with varying depths. For a reference surface, in this current...

article 2015

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A new water absorbable mechanical Epidermal skin equivalent: The combination of hydrophobic PDMS and hydrophilic PVA hydrogel

Morales-Hurtado, M. (author), Zeng, X. (author), Gonzalez-Rodriguez, P. (author), ten Elshof, J.E. (author), van der Heide, E. (author)

Research on human skin interactions with healthcare and lifestyle products is a topic continuously attracting scientific studies over the past years. It is possible to evaluate skin mechanical properties based on human or animal experimentation, yet in addition to possible ethical issues, these samples are hard to obtain, expensive and give rise...

article 2015

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Leading edge erosion of coated wind turbine blades: Review of coating life models

Slot, H.M. (author), Gelinck, E.R.M. (author), Rentrop, C. (author), van der Heide, E. (author)

Erosion of the leading edge of wind turbine blades by droplet impingement wear, reduces blade aerodynamic efficiency and power output. Eventually, it compromises the integrity of blade surfaces. Elastomeric coatings are currently used for erosion resistance, yet the life of such coatings cannot be predicted accurately. This review paper gives an...

article 2015

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Boundary lubrication of stainless steel and CoCrMo alloy based on phosphorous and boron compounds in oil-in-water emulsion

Yan, J. (author), Zeng, X. (author), Ren, T. (author), van der Heide, E. (author)

Emulsion lubrication is widely used in metal forming operations and has potential applications in the biomedical field, yet the emulsion lubrication mechanism is not well understood. This work explores the possibilities of three different oil-in-water (O/W) emulsions containing dibutyl octadecylphosphoramidate (DBOP), 6-octadecyl-1,3,6,2...

article 2014

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The tribological performance and tribochemical analysis of novel borate esters as lubricant additives in rapeseed oil

Yan, J. (author), Zeng, X. (author), van der Heide, E. (author), Ren, T. (author)

Two novel borate esters, tris (4-dodecylphenyl) borate and 2-(2-(4-dodecylphenoxy)-1, 3, 6, 2-dioxazaborocan-6-yl) ethanol were synthesized and applied as anti-wear and extreme pressure additives in rapeseed oil. The borate esters possess high anti-wear and extreme pressure properties. XANES and XPS were used to analyze the composition and...

article 2014

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On the probability of skin damage due to frictional heating in real asperity contacts

van der Heide, E. (author), Masen, M. (author), Zhang, S. (author), van Kuilenburg, J. (author), Gelinck, E.R.M. (author)

conference paper 2014

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The role of the skin microrelief in the contact behaviour of human skin: Contact between the human finger and regular surface textures

van Kuilenburg, J. (author), Masen, M.A. (author), van der Heide, E. (author)

The friction behaviour of the human fingerpad as a function of asperity geometry was investigated experimentally. Surface textures consisting of evenly distributed spherically tipped asperities were used for in vivo testing. Using analytical expressions, a multi-scale model was developed to explain the observed friction behaviour as a function...

article 2013

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Relating friction on the human skin to the hydration and temperature of the skin

Veijgen, N.K. (author), Masen, M.A. (author), van der Heide, E. (author)

The human skin is constantly in interaction with materials and products. Therefore, skin friction is relevant to all people. In the literature, the frictional properties of the skin have been linked to a large variety of variables, like age, gender and hydration. The present study compares the data of 450 skin friction measurements with the skin...

article 2013

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The influence of abrasive body dimensions on single asperity wear

Woldman, M. (author), van der Heide, E. (author), Tinga, T. (author), Masen, M.A. (author)

This work focuses on the relation between the properties of abrasive bodies and the wear they cause. By performing single asperity scratch tests to simulate abrasive wear, the wear process takes place in a controlled environment, allowing the properties of the abrasive body to be isolated and studied independently. The setup used is a pin-on...

article 2013

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Variables influencing the frictional behaviour of in vivo human skin

Veijgen, N.K. (author), Masen, M.A. (author), van der Heide, E. (author)

In the past decades, skin friction research has focused on determining which variables are important to affect the frictional behaviour of in vivo human skin. Until now, there is still limited knowledge on these variables.This study has used a large dataset to identify the effect of variables on the human skin, subject characteristics and...

article 2013