The next edition of the NICAS Colloquium takes place on Thursday, 8 October 2019, from 12:00 to 13:00 in the main room of Het Bureau (Hobbemastraat 20, Amsterdam).
The chair of this colloquium will be Paul van Duin (Rijksmuseum).
The following presentations are scheduled for this edition of the NICAS Colloquium:
The story of logwood ink
From 2006 till 2017, in the project “Van Gogh at Work”, and its follow-up, “ReViGo”, the Cultural Heritage Agency, together with the Van Gogh Museum, investigated the materials used by the artist in his drawings and paintings. Inks on 51 drawings, as well as 26 letters, were analyzed by XRF-spectrometry: 62% contained chromium, identifying them as chrome-logwood ink. This ink was introduced by the German chemist Runge in 1847 as a non-corrosive alternative for iron-gall ink. The chrome-logwood inks were mainly found on the drawings Van Gogh made in Belgium and France (1885-1890). In his Dutch period (1880-1885), most of the inks contained iron, identifying them as iron gall inks. This presentation aims to explain the properties and trade development of these inks and why Van Gogh shifted to using logwood ink when he moved from the Netherlands to France.
Han Neevel is a senior scientist at the Cultural Heritage Agency of the Netherlands, specialising in analytical chemical research on inks and dyes. His research is aimed at developing new techniques of passive and active conservation of objects of art and science, as well as developing new analytical methods for material identification.
Climate-induced damage in oak museum objects
The research presented is part of the Climate4Wood project and contributes towards the safe and sustainable preservation of valuable decorated oak door panels in historical Dutch cabinets part of the Rijksmuseum collection. The overall objective is to gain insight in the origin of climate-induced damage observed on these objects. This research field is complex and comprehensive, despite that, the numerical simulations and laboratory experiments presented provide in-depth information on the most important aspects of climate-induced damage. Three main topics are covered: i) the characterisation of the fracture behaviour of historic and new oak wood, ii) the hygro-mechanical response of mock-ups of historical cabinet door panels under relative humidity fluctuations and iii) the numerical analysis of climate-induced deformation and fracture in door panels of historical oak cabinets. The main findings may contribute to the development of sustainable preservation strategies.
Rianne Luimes is a postdoctoral researcher at the group of Applied Mechanics of the Eindhoven University of Technology. Recently, she finished her PhD research on climate-induced damage in oak museum objects.
Thursday, 14 November 2019
12:00 – 13:00 hrs