Industrial facilities often require periodic visual inspections of key installations. Examining these points of interest is time consuming, potentially hazardous or require special equipment to reach. Micro Air Vehicles (MAVs) are ideal platforms to automate this expensive and tedious task. In this work we present a novel system that enables a human operator to teach a visual inspection task to...

In this contribution we outline a new project in the field of service robotics. The goal is to develop teams of mobile robots that perform routine inspection, health monitoring, and early fault detection in large chemical process plants or in public utility networks. We envisage a general-purpose assistant for the maintenance engineer to collect, compress and screen large amounts of inspection ...

The inspection of shrinkage cavities formed inside spheroidal graphite cast iron during the manufacturing process products, including large structures and machine parts, is considered to be important for quality assurance products. X-ray ultrasonic methods are generally used this inspection. However, former method takes a long time considerable equipment costs, latter requires use water as cont...

the paper presents an economical model for double variable acceptance sampling with inspection errors. taguchi cost function is used as acceptance cost while quality specification functions are normal with known variance. an optimization model is developed for double variables acceptance sampling scheme at the presence of inspection errors with either constant or monotone value functions. the m...

Current work on image understanding at the University of Utah is focused principally on using computer vision and related sensing techniques to aid in problems associated with manufacturing. Three projects are now underway: feature-based reverse engineering, benchmarking of IU for man-made objects, and improved integration of inspection with design and manufacturing. In all three projects, the ...

Whilst drilling is the most frequently employed operation of secondary machining for structure joining, delamination is a very serious defect during drilling of fiber-reinforced composite materials,. The evaluation of the delamination damage in the material is important but rather difficult, particularly for carbon fiber-based composites, because their colour makes visual inspection difficult. ...

Ever-increasing IP traffic and security threats are driving the need for more robust cyber security and extensive analysis of packet flows to better protect and manage network traffic. In response, a new breed of security appliances has emerged, interrogating packet content and extracting metadata, and providing far more traffic flow detail than made possible with first generation deep packet i...

A three-dimensional vision system for inspection activities of installations and equipment by remotely operated vehicles is presented. A real-time vision system is used for the acquisition of stereo pairs of images which, after preprocessing, are submitted to a reconstruction procedure in order to obtain 3-D coordinates and to perform dimensioning of objects. A minimization procedure applied to...

There are over six hundred thousand bridges in the U.S. which require great amount of human effort along with expensive and specialized equipment for maintenance. Current bridge inspections are manually performed by inspectors which are inefficient and unsafe. This paper presents visual and three dimensional (3D) structure inspection for steel bridges and steel structures using the developed cl...

Detection of Low Frequency (around 40kHz) Ultrasound is a powerful method for maintenance inspection of plant and machinery. Many failure conditions give early indication by the production of ultrasound. These include pressure leaks, electrical discharge and deterioration of bearings and other machinery. Leakage of compressed air has become a particular issue recently with the promotion of ener...