Adhesive Through-Reinforcement Improves the Fracture Toughness of a Laminated Birch Wood Composite

Figure 2

Mode I (crack opening mode) fracture toughness testing of a laminated birch wood composite: (a) Hinges used to attach one end of a specimen to the two cross-heads; (b) universal tensile testing machine with attached computer, and also showing the position of the DSLR camera for measurement of crack propagation and crack length; (c) white coated edge of one side of a specimen with scale markers; (d) higher magnification image of (c) showing the position of a crack tip front.

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