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An extensometer for fracture mechanics testing of thin composite laminates

Authors
Journal
Engineering Fracture Mechanics
0013-7944
Publisher
Elsevier
Publication Date
Volume
30
Issue
1
Identifiers
DOI: 10.1016/0013-7944(88)90248-2
Disciplines
  • Design
  • Physics

Abstract

Abstract In fracture mechanics testing of thin reinforced plastic laminates, an important link in the measurement chain is the displacement transducer, which must be capable of measuring crack tip opening displacement (CTOD) and/or allowing evaluation of the J-integral by the unloading compliance method. The lightweight extensometer designed and calibrated by the authors can be used without any specimen knife edges. Highly deformable, it has the advantage of not rigidifying when used on low-stiffness specimens.

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