This paper reviews applications of acoustic emission sensing techniques in machining. Originally applied to non-destructive testing of structures but now Acoustic Emission Signals are proving to be an effective tool for monitoring of the machining process due to its sensitivity to process parameters. The source of AE is attributed to the release of stored elastic energy that manifests itself in...

The paper deals with the review of acoustic emission technique in biomedical field. The review is done with the aim to provide an overview of the use of AE technique in biomedical field, mainly concentrated on the AE behavior of bone under different loading conditions, its dependence on strain rate, in osteoporosis, monitoring the fracture healing process of bone. The overall conclusion from th...

Abstract Acoustic emission (AE) is one of the most promising methods for structural health monitoring (SHM) materials and structures. Because its passive non-invasive nature, it can be used during operation a structure supply information that cannot collected in real time through other techniques. It based on recording study elastic waves are excited by irreversible processes, such as crack nuc...

Corrosion of concrete reinforcement members has been recognized as a predominant structural deterioration mechanism for steel reinforced concrete structures. Many corrosion detection techniques have been developed for reinforced concrete structures, but a dependable one is more than desired. Acoustic emission technique and fiber optic sensing have emerged as new tools in the field of structural...

The mechanical characteristics of rock salt have an important influence on the safety of the salt cavity. The acoustic emission (AE) technique was used to analyze the generation of microcracks in rock salt under uniaxial compression condition. By monitoring acoustic emission in whole process of stress strain curve under uniaxial compression test, the damage characteristic of rock salt is obtain...

In this paper acoustic transmitters that were developed for use in underwater neutrino telescopes are presented. Firstly, an acoustic transceiver has been developed as part of the acoustic positioning system of neutrino telescopes. These infrastructures are not completely rigid and require a positioning system in order to monitor the position of the optical sensors which move due to sea current...

In this study, the change at rubbing surfaces has been investigated experimentally using an acoustic emission signal monitoring system. A steel ring is slipped on the surface of  a metallic sheet to simulate frictional conditions. The mechanical disturbances caused by the movement of the ring produce stress waves propagating along the sheet surface. The out of plane displacement of the sheet su...