• Willemien Anaf
  • Marina Van Bos
  • Marjolijn Debulpaep
  • William Wei
  • Luc Schillemans
  • Tom Carton


The Enclosed Gardens of Mechelen are beautiful examples of historical mixed-media objects. Since they are extremely fragile, vibrations are considered a major agent of deterioration. To prepare and evaluate their permanent exhibition and to support decision making for future loans, three experiments were performed to estimate the vibrational impact. First, resonant frequencies were defined in a shaker table experiment. Second, the impact of transport was considered. A truck transport of three Gardens to a temporary exhibition was monitored and the condition of the Gardens was documented before and after transport. Finally, a vibrational assessment was performed on the permanent display.

Biografias do Autor

Willemien Anaf

Is a conservation scientist, specialized in preventive conservation and air quality. In 2009 she graduated from the University College of Antwerp as a Master in Conservation and Restoration. In 2014, she completed a PhD at the University of Antwerp, Chemistry Department: “The influence of particulate matter on cultural heritage. Chemical characterization of the interaction between the atmospheric environment and pigments”. Finally, she contributed to several heritage-related projects, of which one was on the elaboration of preventive conservation measures for the Enclosed Gardens.

Marina Van Bos

Is a senior scientist, specialized in the study of painting techniques and materials. She studied Chemistry at the University of Ghent, where she obtained her MA and PhD (1990). She has worked in the Laboratory Department of KIK-IRPA since 1991.
Her research activities are split between analyzing painted finishing layers of murals, monumental decoration (interior and exterior) and wallpaper and the identification of the various components in pictorial layers and/or inks of manuscripts or paint on paper and leather, mostly using non-invasive techniques.
She is currently also involved in the BRAIN-be ARTGARDEN research project (Art-technical research and preservation of historical mixed-media ensembles: Enclosed Gardens).

Marjolijn Debulpaep

Has been employed by the Royal Institute for Cultural Heritage (KIK-IRPA, Brussels, Belgium) since 2001. In 2007, she became the responsible preventive conservation consultant for the Preventive Conservation Unit, within the Conservation-Restoration Department. She conducts broad-based research and assessments, and develops training activities in Belgium (Risk Assessment, Value Assessment, IPM, RE-ORG). She advises museums, archives, libraries, churches and cultural centers all over Belgium on a range of preventive conservation issues. Marjolijn is the coordinator of the Belgian RE-ORG program (April 2015 – present). She holds a B.A. in Art History and is a paintings conservator. She specialized in preventive conservation through various ICCROM & INP courses.

William Wei

Is a Senior Conservation Scientist in the Research Department of the Cultural Heritage Agency of the Netherlands (RCE). He has a BSE in mechanical engineering from Princeton University (1977) and a Ph.D. in materials science from the University of Illinois at Urbana-Champaign (1983). Before working in the cultural heritage field, he spent more than fifteen years in industrial research and development in the areas of advanced materials, mechanical properties, fracture mechanics and fatigue, and corrosion. At the RCE he has been conducting research into and consulting on the effects of vibrations and mechanical stresses on the condition of fragile works of art and cultural heritage for more than fifteen years. He also conducts research into the effects of cleaning, treatments and (virtual) retouching of objects on their appearance.

Luc Schillemans

Has a Master of Science degree in electromechanical engineering of the Free University of Brussels. He has 30 years of professional engineering experience in structural dynamics and was involved in about 350 projects, national and international. He is a team leader of junior and senior engineers in this field. He is also the author of specialised papers and is peer reviewer for the journal of sound and vibration. Projects include the study of the effects of dynamic excitations like gas and fluid flows (extreme wind effects), traffic (road and railroad), process (industrial melt processes), shocks (blasts, explosions) as well as seismic events. Measurements and simulations are regularly part of the project and solutions are proposed.

Tom Carton

Is working for Tractebel since 2015 and has a Master of Science degree in industrial science (Electronics/ICT). After his studies in Belgium, he moved to Manchester where he successfully completed a master degree in audio/acoustics at the University of Salford. In the department acoustics and vibrations of Tractebel, Tom has participated in several projects in the three disciplines; environmental acoustics, building acoustics and structural dynamics.