Use of early acoustic emission to evaluate the structural condition and self-healing performance of textile reinforced cements. (April 2017)

• Record Type: Journal Article
• Authors: El Kadi, Michael; Blom, Johan; Wastiels, Jan; Aggelis, Dimitrios G.
• Is Part Of: Mechanics research communications. Volume 81(2017)
• Page Start: 26
• Page End: 31
• Publication Date: 2017-04
• Subjects: Matrix crack -- Fibre -- Delamination -- Self-healing -- Bending -- Attenuation -- TRC; Mechanics, Applied -- Periodicals; Mécanique appliquée -- Périodiques; Mechanics, Applied; Periodicals; 530
• DOI: 10.1016/j.mechrescom.2017.02.007
• Languages: English
• ISSNs: 0093-6413

Abstract

Highlights: First time that the difference between intact, cracked and self-healed TRC laminates is reported in literature. Simple acoustic emission parameters are indicative of the fracture mechanisms and show the transition from cracking to mixed mode. The differences are evident by the early activity before the mechanical load induces serious damage. Self-healed specimens exhibit acoustic behavior closer to the sound rather than the damaged. Abstract: Textile reinforce cements (TRC) are innovative materials that are used for repair of existing structures or recently as stand-alone lightweight structural members. Fracture and thermal behavior of these materials are very complicated due to multiple failure modes. The undergoing processes cannot be described by the simple constitutive equation. In this perspective the contribution of monitoring techniques is crucial. Acoustic emission (AE) is used to check the behavior of TRC beams and plates in different states of structural health: intact, thermally pre-cracked and self-healed by polymer powder. This is the first time that the AE behaviors of intact, cracked and self-healed TRC laminates are compared in literature.