Monitoring of self-healing composites: a nonlinear ultrasound approach. (9th October 2017)

• Record Type: Journal Article
• Authors: Fierro, Gian-Piero Malfense; Pinto, Fulvio; Iacono, Stefania Dello; Martone, Alfonso; Amendola, Eugenio; Meo, Michele
• Is Part Of: Smart materials and structures. Volume 26:Number 11(2017:Nov.)
• Publication Date: 2017-10-09
• Subjects: self-healing composites -- nonlinear ultrasound -- phased array; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/aa89a8
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: Self-healing composites using a thermally mendable polymer, based on Diels–Alder reaction were fabricated and subjected to various multiple damage loads. Unlike traditional destructive methods, this work presents a nonlinear ultrasound technique to evaluate the structural recovery of the proposed self-healing laminate structures. The results were compared to computer tomography and linear ultrasound methods. The laminates were subjected to multiple loading and healing cycles and the induced damage and recovery at each stage was evaluated. The results highlight the benefit and added advantage of using a nonlinear based methodology to monitor the structural recovery of reversibly cross-linked epoxy with efficient recycling and multiple self-healing capability.