Zoekresultaten

Advances on research on inspection techniques at Amsterdam University of Applied Sciences

Automation of composite repairs

The present study aims at understanding and addressing certain challenges of automation of composite repairs. This research is part of a larger, SIA-RAAK funded project FIXAR, running in three Universities of Applied Sciences in the Netherlands and a cluster of knowledge institutions and industry partners.The approach followed in the current study, consists of three steps. First, the identification of the feasibility and most promising procedures for automated composite repair by analysis of current state-of-the-art methods as prescribed by OEMs and standards. Processes which are tedious or even contain health risks may qualify for automation. Second, a comparison of curing alternatives for composite repairs is made, by means of the creation and testing of specimen using different curing strategies. Lastly, a benchmark test of human made composite repairs is used in order to set a reference baseline for automation quality. This benchmark can be then applied to define a lower limit and prevent over-optimization. The employed methodology includes data collection, analysis, modelling and experiments.

Niet-destructief onderzoek

Een van de instrumenten voor de bepaling van de kwaliteit en van de aanwezigheid van opgetreden schade vormt het niet-destructief onderzoek (NDO), waarvan vele uitvoeringsvormen zijn ontwikkeld en waaraan binnen de kaders van de wetgeving en de in gebruik zijnde Codes zowel aan de apparatuur als aan de bediening eisen worden gesteld. Zo moeten ook de uitvoerders van NDO in de praktijk gecertificeerd zijn.

Structural Longevity of FPSO Hulls

Abstract: The key challenge of managing Floating Production Storage and Offloading assets (FPSOs) for offshore hydrocarbon production lies in maximizing the economic value and productivity, while minimizing the Total Cost of Ownership and operational risk. This is a comprehensive task, considering the increasing demands of performance contracting, (down)time reduction, safety and sustainability while coping with high levels of phenomenological complexity and relatively low product maturity due to the limited amount of units deployed in varying operating conditions. Presently, design, construction and operational practices are largely influenced by high-cycle fatigue as a primary degradation parameter. Empirical (inspection) practices are deployed as the key instrument to identify and mitigate system anomalies and unanticipated defects, inherently a reactive measure. This paper describes a paradigm-shift from predominant singular methods into a more holistic and pro-active system approach to safeguard structural longevity. This is done through a short review of several synergetic Joint Industry Projects (JIP’s) from different angles of incidence on enhanced design and operations through coherent a-priori fatigue prediction and posteriori anomaly detection and -monitoring.

Current Performance and Future Practices in FPSO Hull Condition Assessments

The aim of this paper is to show the benefits of enhancing classic Risk Based Inspection (without fatigue monitoring data) with an Advisory Hull Monitoring System (AHMS) to monitor and justify lifetime consumption to provide more thorough grounds for operational, inspection, repair and maintenance decisions whilst demonstrating regulatory compliance.