Mechanical characterization of ultrasonically welded CF/PEEK laminates by short beam shear test

Abstract

Bond strength between composite plates has often been evaluated using single-lap shear tests, with the difficulty of having the characteristics of the entire bond area reflected in the results. To overcome this limitation, a short-beam shear test was performed in this study. The specimens were fabricated by ultrasonic welding using carbon fiber reinforced polyether ether ketone laminates as the adherend and a resin mesh. The effect on mechanical characterization was investigated by varying the thickness and stacking configuration of the adherend and the welding energy. The highest apparent interlaminar shear strength was observed when an approximately 3 mm thick adherend of the quasi-isotropic laminate was welded, and the strength was approximately 17% lower than that of non-welded laminates.

Keywords:

• thermoplastic resin
• strength
• mechanical testing
• ultrasonic welding

Author Contributions

Shin-ichi Takeda: Data acquisition, Conception of study, Analysis of test data, Writing the manuscript.

Daichi Kugi: Sample preparation, Mechanical testing, Damage evaluation

M. J. Mohammad Fikry: Numerical analysis, Validation

Sunao Sugimoto: Damage evaluation, Validation

Shinji Ogihara: Validation, Supervision

Disclosure statement

No potential conflict of interest was reported by the author(s).