Shape-sensing mat gives real-time load,fatigue data on deepwater risers

摘要

The drive to develop deeper fields,coupled with environmental,legislative and financial expediency,has led to an increasing need to monitor loads in real time and track the load histories of deep-water risers and flowlines.The demands of deep,extended subsea operations have challenged conventional strain gauging.Practical difficulties of bonding and protecting strain gauges,plus ongoing calibration issues,have restricted development of structural health monitoring technologies.Alternative techniques based on interpretation of second-order effects that can be more readily measured (e.g.accelerometers and inclinometers) have been preferred.