Fracture of composite-adhesive-composite systemsThis program was undertaken to initiate the development of a test method for testing adhesive joints in metal-adhesive-composite systems. The uniform double cantilever beam (UDCB) and the width tapered beam (WTB) specimen geometries were evaluated for measuring Mode I fracture toughness in these systems. The WTB specimen is the preferred geometry in spite of the fact that it is more costly to machine than the UDCB specimen. The use of loading tabs attached to thin sheets of composites proved to be experimentally unsatisfactory. Consequently, a new system was developed to load thin sheets of adherends. This system allows for the direct measurement of displacement along the load line. In well made joints separation occurred between the plies rather than in the adhesive.
Document ID
19850045784
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ripling, E. J. (Materials Research Lab., Inc. Glenwood, IL, United States)
Santner, J. S. (Materials Research Lab., Inc. Glenwood, IL, United States)
Crosley, P. B. (Materials Research Laboratory, Inc. Glenwood, IL, United States)