A study on the efficiency of steel vs. synthetic vs. hybrid fibers on fracture behavior of concrete in flexure using acoustic emission

Aim of this study focused on insert injection molding process, which is molded the melted polymer around an inserted part placed in the molded cavity of injection molding process. The interfacial adhesive strength between the inserted and an injected polymer parts were investigated by Intron universal test machine in order to investigate the effect of material in inserted and injected part. During tensile testing the acoustic emissions (AE) measurement was applied to evaluate the fracture behavior of insert injection molding. It was found that interfacial adhesive strength of insert injection molded of all specimens increased according with increasing the bonding area of adhesive interface. The fracture mode of the insert injection molded specimens was depended on the length of bonding area of the inserted part. The fracture of mode of the insert-injection molded specimens was confirmed by acoustic emission.

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Evaluation of fracture behavior in metal/ceramic joint by acoustic emission

10.1063/1.1301978 ◽

1999 ◽

Author(s):

Y. J. Park ◽

M. Enoki ◽

T. Suga ◽

T. Kishi

Keyword(s):

Acoustic Emission ◽

Fracture Behavior ◽

Metal Ceramic

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Fatigue behavior and damage analysis by the acoustic emission technique of cross-ply laminates under tensile loading

Multidiscipline Modeling in Materials and Structures ◽

10.1108/mmms-08-2016-0036 ◽

2017 ◽

Vol 13 (2) ◽

pp. 150-164

Author(s):

Imen Ben Ammar ◽

Abderrahim El Mahi ◽

Chafik Karra ◽

Rachid El Guerjouma ◽

Mohamed Haddar

Keyword(s):

Acoustic Emission ◽

Mechanical Behavior ◽

Fatigue Behavior ◽

Glass Fibers ◽

Tensile Tests ◽

Hybrid Fibers ◽

Content Type ◽

Laminated Materials ◽

Ae Signals ◽

Damage Investigation

Purpose The purpose of this paper is to study the mechanical behavior in fatigue tensile mode of different cross-ply laminates constituted of unidirectional carbon fibers, hybrid fibers and glass fibers in an epoxy matrix; and to identify and characterize the local damage in the laminated materials with the use of the acoustic emission (AE) technique. Design/methodology/approach The tests in the fatigue mode permitted the determination of the effect of the stacking sequences, thickness of 90° oriented layers and reinforcement types on the fatigue mechanical behavior of the laminated materials. The damage investigation in those materials is reached with the analysis of AE signals collected from fatigue tensile tests. Findings The results show the effects of reinforcement type, stacking sequences and thicknesses ratio of 90° and 0° layers on the mechanical behavior. A cluster analysis of AE data is achieved and the resulting clusters are correlated with the damage mechanism of specimens under loading tests. Originality/value The analysis of AE signals collected from tensile tests of the fatigue failure load allows the damage investigation in different types of cross-ply laminates which are differentiated by the reinforcement type, stacking sequences and thicknesses ratio of 90° and 0° layers.

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