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Friday, June 1 • 5:00pm - 5:30pm
(Imaging Technology) Using Photogrammetry to Understand the Mechanical Behavior of Bound Volumes

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Image Permanence Institute (IPI) has been studying the chemical and mechanical stability of collection materials for thirty years. One area of focus has been on the rate of moisture equilibration of library and archive materials. That research has led us to understand that it may take weeks or even months for an entire bound volume to equilibrate to a change in ambient relative humidity. However, experiential evidence demonstrates that the outer layer, or “skin,” of a book can react quickly to certain environmental changes leading to potential mechanical deformation. Studying the mechanical behavior of books is particularly challenging as they are three-dimensional, complex, composite objects made of diverse materials and constructed in a variety of ways. IPI is currently using a photogrammetry technique called Digital Image Correlation (DIC) to further our understanding of the mechanical behavior of common library and archive materials as well as the “skin” of bound volumes. Individual materials such as paper, book cloth, leather, and parchment were tested as well as bound volumes that range in date from early 18th century to late 20th century. Book samples are bound with a variety of materials and have varying structures, including tight back, hollow back, and perfect bindings in full, half, and quarter leather, cloth, and paper as well as full vellum bindings. DIC is a relatively new imaging technology that allows for the study of dimensional changes in two-dimensional and three-dimensional objects. A random dot pattern is applied to the test material and imaged in stereo. Software analyzes the images and measures dimensional displacement within the material producing 2-D and 3-D strain models. Of particular interest is the correlation between moisture transfer and strain, and the amount of strain experienced in bound volumes with changes in environment. This data will help determine the upper and lower limits of temperature and relative humidity necessary to avoid permanent deformation and will better inform our models for sustainable preservation environmental parameters.

avatar for Alice S. Carver-Kubik

Alice S. Carver-Kubik

Research Scientist, Image Permanence Institute
Alice Carver-Kubik is a Research Scientist at Image Permanence Institute. Her research focus is on collection storage environments and the mechanical behavior of library and archive materials. She received her M.A. in Photographic Preservation and Collections Management from Ryerson... Read More →

avatar for Jean-Louis Bigourdan

Jean-Louis Bigourdan

Senior Research Scientist, Image Permanence Institute, Rochester Institute of Technology
Jean-Louis Bigourdan is a senior research scientist at the Image Permanence Institute (IPI), Rochester Institute of Technology, Rochester, New York, USA. He has a background in Chemistry, photography and conservation of photographic materials. He received his diploma in the conservation... Read More →
avatar for Douglas Nishimura

Douglas Nishimura

Senior Research Scientist, Image Permanence Institute
Douglas W. Nishimura, Senior Research Scientist, received his degree in chemistry from McMaster University in Canada. He is a member of the joint ISO-ANSI committee responsible for the physical properties and permanence of imaging materials. Before joining IPI as a research scientist... Read More →

James Reilly

Founder and Director, Image Permanence Institute
James M. Reilly is the founder and director of IPI. He has made important contributions to image preservation, environmental management, and sustainable preservation practices. During its tenure, Jim was Co-director of the Advanced Residency Program in Photographic Conservation, a... Read More →

Friday June 1, 2018 5:00pm - 5:30pm MDT
Texas Ballroom D Marriott Marquis Houston