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Facilities with tanks often present additional risks beyond site risks, such as potential injury to site personnel, damage to equipment and environment. The floor of an above ground storage tank is the most difficult part to access using online inspection method. In this paper, four on-line defect detection methods, such as volumetric or mass methods, acoustic emission (AE), soil vapor monitoring...
Acoustic emission (AE) is a dynamic nondestructive measuring and testing method, which is widely used in safety and integrity evaluation of structure and material. This paper investigates the relationship of micro cracking process of the pipeline material and acoustic emission phenomenon in detail, and establishes the connection between micro cracking of the material and AE counts. Experiments were...
This paper investigates the use of acoustic emission (AE) for simulated crack in a stainless steel pipeline. An approach to liner sound source localization in pipeline using two or more acoustic sensors is described, and rules to define timing parameters - peak definition time (PDT), Hit definition time (HDT) and Hit lockout time (HLT) of acoustic emission signal is studied in order to improve the...
Detection and position of defects in pipeline based on acoustic emission was investigated. The theory of AE pipeline detection and position method was analyzed and a serial of experiments were carried out. Parameters, such as pressure in the pipe, diameter of the leaking hole (leaking hole), and distance from transducers to the leaking hole, were adjusted to show its effects on AE signals caused by...
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