A Practical Test Method for Mode I Fracture Toughness of Adhesive Joints with Dissimilar Substrates

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A practical test method for determining the mode I fracture toughness of adhesive joints with dissimilar substrates will be discussed. The test method is based on the familiar Double Cantilever Beam (DCB) specimen geometry, but overcomes limitations in existing techniques that preclude their use when testing joints with dissimilar substrates. The test method is applicable to adhesive joints where the two bonded substrates have different flexural rigidities due to geometric and/or material considerations. Two specific features discussed are the use of backing beams to prevent substrate damage and a compliance matching scheme to achieve symmetric loading conditions. The procedure is ... continued below

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9 pages

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Boeman, R. G.; Erdman, D. L.; Klett, L. B. & Lomax, R. D. September 27, 1999.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 67 times , with 7 in the last month . More information about this article can be viewed below.

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Description

A practical test method for determining the mode I fracture toughness of adhesive joints with dissimilar substrates will be discussed. The test method is based on the familiar Double Cantilever Beam (DCB) specimen geometry, but overcomes limitations in existing techniques that preclude their use when testing joints with dissimilar substrates. The test method is applicable to adhesive joints where the two bonded substrates have different flexural rigidities due to geometric and/or material considerations. Two specific features discussed are the use of backing beams to prevent substrate damage and a compliance matching scheme to achieve symmetric loading conditions. The procedure is demonstrated on a modified DCB specimen comprised of SRIM composite and thin-section, e-coat steel substrates bonded with an epoxy adhesive. Results indicate that the test method provides a practical means of characterizing the mode I fracture toughness of joints with dissimilar substrates.

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9 pages

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  • SAMPE-ACCE-DOE Advanced Composites Conference, Detroit, MI, September 27-28, 1999

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  • Other: DE00009731
  • Report No.: ORNL/CP-104246
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 9731
  • Archival Resource Key: ark:/67531/metadc791762

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 27, 1999

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

Description Last Updated

  • Oct. 31, 2017, 2:44 p.m.

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Boeman, R. G.; Erdman, D. L.; Klett, L. B. & Lomax, R. D. A Practical Test Method for Mode I Fracture Toughness of Adhesive Joints with Dissimilar Substrates, article, September 27, 1999; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc791762/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.