SYMPOSIA PAPER Published: 01 January 1964

Application of Fracture Mechanics to Adhesive Joints


Fracture mechanics is a relatively new topic that makes it possible to define toughness of material in the presence of flaws. The effect of joint geometry, section size, strain rate, and fracture mode on fracture toughness are discussed. The overriding factor in establishing the toughness of any joint is the speed with which the crack moves along the glueline. Slow-moving cracks result in high toughness, while cracks that abruptly jump along the glueline result in low toughness. Changing the fracturing mode from tensile to forward shear results in an order of magnitude increase in toughness.

Author Information

Ripling, E., J.
Materials Research Laboratory, Richton Park, Ill.
Mostovoy, S.
Materials Research Laboratory, Richton Park, Ill.
Patrick, R., L.
Alpha R and D, Inc., Blue Island, Ill.
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Developed by Committee: D14
Pages: 5–19
DOI: 10.1520/STP44560S
ISBN-EB: 978-0-8031-5998-3
ISBN-13: 978-0-8031-6152-8