Abstract
An experimental program to characterize the effect of voids on the strength of composite laminates is presented, and the adequacy of a fracture criterion to represent the experimental data for the effect of voids on the compressive and interlaminar shear strength of composite laminates is assessed. The experimental program investigates the effect of the material system (epoxy matrix vs bismaleimide matrix), type of reinforcement (unidirectional tape vs woven fabric), and the type of loading (compression vs interlaminar shear) on the critical void content. Laminates produced with carbon fabric/epoxy, carbon tape/epoxy, and carbon fabric/bismaleimide were produced with an intentionally high void content. The ultrasonic absorption coefficient was measured for all specimens and shown to vary approximately linearly with the void content, with the exception of the carbon fabric/epoxy laminates that presented a bilinear relationship with void content, corroborating previous experimental results. The effects of these factors on the strength of composite laminates are discussed in terms of the fracture parameters involved in the fracture criterion. The critical void content is estimated for each case both in terms of void content and ultrasonic attenuation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
