Comparing Non-destructive Mechanical Testing Methods for the Assessment of Brittle Papers – The Cantilever, Hanging Pear Loop, and Clamped Fold Tests

IF 0.7 4区管理学 Q3 INFORMATION SCIENCE & LIBRARY SCIENCE

Restaurator. International Journal for the Preservation of Library and Archival Material Pub Date : 2019-03-01 DOI:10.1515/RES-2018-0015

Andrea K. I. Hall, R. Plaut, P. McGuiggan

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引用次数: 4

Abstract

Abstract The ability to determine the condition of paper (e.g. its brittleness) and its permanence is a need in libraries and archives. This study investigates various bend tests and applies these tests to aged paper with the goal of finding easy, non-destructive tests to determine the mechanical properties of paper. The cantilever test was previously shown to accurately assess mechanical properties of paper-based materials, such as elastic and bending moduli as well as the bending length. This work investigates the hanging pear loop and clamped fold tests and compares the results with those found with the cantilever test. The results show that the strain and curvature induced by the two tests are much larger than those experienced in the cantilever test. This large strain and curvature induce plastic behaviour and make the hanging pear loop and clamped fold tests inappropriate for use on paper-based materials.

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比较脆性纸的无损机械测试方法-悬臂式、挂梨式和夹紧式折叠测试

摘要图书馆和档案馆需要能够确定纸张的状况（如脆性）及其持久性。本研究调查了各种弯曲测试，并将这些测试应用于老化纸张，目的是找到简单、无损的测试方法来确定纸张的机械性能。悬臂测试先前被证明可以准确评估纸基材料的机械性能，如弹性模量和弯曲模量以及弯曲长度。本文研究了挂梨环和夹紧折叠试验，并将结果与悬臂试验结果进行了比较。结果表明，两次试验引起的应变和曲率比悬臂试验大得多。这种大的应变和曲率会导致塑性行为，并使挂梨环和夹紧折叠测试不适合在纸基材料上使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Restaurator. International Journal for the Preservation of Library and Archival Material INFORMATION SCIENCE & LIBRARY SCIENCE-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Restaurator is the only international periodical specializing exclusively in the conservation of library and archive materials. Articles examine the many important aspects of this subject area, such as technology, practical experience and organization. They also focus on scientific basics: Many articles deal with the development of new preservation techniques and the improvement and better understanding of established methods. The articles are written in English with summaries in English, French and German. By reading Restaurator regularly, librarians, archivists and restorers can keep up to date with the latest research and developments. The editorial committee is made up of experts from well-known institutions and organizations from all over the world