Purpose No fault found (NFF) in maintenance has been a frequently observed problem in
industrial sectors, but very few academic contributions are devoted to reviewing and …

No fault found (NFF) is a reported fault for which the root cause cannot be found. An NFF
event not only reduces the availability of the equipment to customers but also results in …

For the modern industry, diagnostic failures have been an area where huge sums of money
is wasted through increasingly high levels of unscheduled removals. This is not only due to …

Recently, with the development of technologies for the fourth industrial revolution,
convergence and complex technology are being applied to aircraft, electronic home …

Abstract NDF (No Defect Found) is a phenomenon in which defects have been found in the
manufacturing, operation and use of a product or facility, but phenomenon of defects is not …

Recently, with the development of technologies for the fourth industrial revolution,
convergence and complex technology are being applied to aircraft, electronic home …

NDF (No Defect Found) is a phenomenon in which defects have been found in the
manufacturing, operation and use of a product or facility, but phenomenon of defects is not …

This paper develops an agent-based model to estimate the likelihood of the No Fault Found
(NFF) phenomenon. NFF events are critical problems as the root cause of an issue cannot …

Abstract No Fault Founds (NFFs) are an expensive problem faced by the airline industry.
The underlying cause of NFFs are a major focus of research work in the field, but the dearth …

Hi-tech warranty reports show that a considerable percent of product's failures are related to
the unknown faults and human errors, respectively. In this paper, two joint price and …