Aircraft structures, whether metallic or composite, are subject to service damage which requires their periodic inspection and maintenance. While taking the aircraft out of service is quite costly, the assurance of structural integrity requires such inspection – and possible repair work based on the inspection results obtained. If damage is detected from an inspection, the decision whether to r...

Software-defined networking (SDN) is an emerging network technology that decouples the control plane from the data plane. Using SDN, a fine-grained flow-level inspection for cyber security can be performed by capturing suspicious packets on the network and steering the captured traffic to a traffic analyzer. This work proposes a flow inspection scheduling for various types of traffic flows on S...

Manufacturing products with multiple quality characteristics is always one of the main concerns for an advanced manufacturing system. To assure product quality, finite automatic inspection systems should be available and employed. Inspection planning to allocate inspection stations should then be performed to manage limited inspection resources. Since product variety in batch production or job ...

A reliable inspection system for thin film magnetic head (TFH) patterns on a ceramic wafer substrate has been developed. Since the TFH patterns have a great variety of shapes, the inspection criteria becomes much more complex; that is, the fatal defect size and orientation are defined according to pattern shape. To overcome this problem, we have developed a method that can detect fatal defects ...

Borough of New Beaver Maps are available for inspection at the New Beaver Borough Office, 778 Wampum New Galilee Road, New Galilee, PA 16141. Borough of Wampum Maps are available for inspection at the Borough Secretary’s Office, 355 Main Street, Wampum, PA 16157. Township of Hickory Maps are available for inspection at the Hickory Township Hall, 127 Eastbrook-Neshannock Falls Road, New Castle, ...

This paper presents a model for deterioration and repair of a railway line. The critical failure is “broken line”. Two main failure mechanisms are considered: either shock failure, i.e. an immediate critical failure (without “warning”), or the critical failure occurs as the result of a degradation process, i.e. a degraded failure (crack) occurs first. Various types of inspection and maintenance...

The autonomous inspection of complex environments is a challenging task. An autonomous inspection robot should actively examine entities of interest (EOIs), e.g. defects, and should perform additional inspection actions until the data analysis results reach an appropriate level of confidence. In this paper a semantic approach for inspection planning, plan execution, assessment of the data analy...

This paper deals with an inspection of defects including corrosion and leakage by Acoustic Emission (AE) in an oil tank floor. In contrast to intrusive methods such as magnetic flux leakage, eddy current or ultrasonic, there is no need to emptying and entering the tank in AE method in order to inspection. In this research AE investigation and AE source location is presented in detail. The resul...