Lamb-Wave-Based Method in the Evaluation of Self-Healing Efficiency

Abstract

The aim of this research is a feasibility study of self-healing process monitoring in composite laminates. A novel nondestructive method based on the full wavefield of Lamb wave processing is proposed. Experimental verification is presented for glass-fiber-reinforced polymer plate with embedded self-healing function in the form of a dry microcapsule powder. After impacting the specimen to create barely visible impact damage, a series of laser vibrometer full wavefield measurements were carried out and processed to assess self-healing efficiency.

Keywords

• Self-healing
• Lamb waves
• impact damage
• wavenumber filtering
• laser vibrometry