Fatigue and fracture degradation inspection of offshore structures and mechanical items: the state of the art

A Keprate, RMC Ratnayake - International …, 2015 - asmedigitalcollection.asme.org
A significant number of offshore structures and mechanical items installed in production
systems on the Norwegian Continental Shelf (NCS) are either approaching or have …

High sensitivity rotating alternating current field measurement for arbitrary-angle underwater cracks

W Li, G Chen, J Ge, X Yin, K Li - NDT & E International, 2016 - Elsevier
Alternating current field measurement (ACFM) technology has been used for sizing
underwater structure cracks. However, conventional ACFM is more sensitive to cracks …

On lifetime extension of wind turbine drivetrains

K Tartt, AR Nejad… - International …, 2021 - asmedigitalcollection.asme.org
The focused shift to reduce carbon emissions by substituting fossil fuels with renewable
energy sources, including wind, is increasing. This means that more and more wind turbines …

Development of an empirical formula for machine classification: Prioritization of maintenance tasks

D Stadnicka, K Antosz, RMC Ratnayake - Safety Science, 2014 - Elsevier
Continuous type production and discrete type manufacturing systems face challenges in
optimizing the maintenance related costs. The risk based maintenance approach has been …

Enabling RDM in challenging environments via additive layer manufacturing: enhancing offshore petroleum asset operations

RM Chandima Ratnayake - Production Planning & Control, 2019 - Taylor & Francis
Redistributed manufacturing (RDM), together with additive layer manufacturing (ALM),
enables a consumer-centric supply to be created and some of the challenges pertaining to …

Model-free adaptive filter to mitigate actuator wear

ELF Fortaleza, LM Gomes, JOA Limaverde Filho… - ISA transactions, 2022 - Elsevier
The present article introduces an adaptive filter of statistical basis developed for closed-loop
control applications, whose goal is to reduce actuator wear while ensuring a similar control …

KBE development for criticality classification of mechanical equipment: A fuzzy expert system

RMC Ratnayake - International journal of disaster risk reduction, 2014 - Elsevier
Recent research reveals that a significant number of unwanted events have occurred due to
latent failures which route back to human errors linked to maintenance engineering …

Implementation of lean knowledge work in oil and gas industry-A case study from a Risk-Based Inspection project

A Rachman, RMC Ratnayake - 2016 IEEE International …, 2016 - ieeexplore.ieee.org
Professional engineering service-delivering firms (PESDFs) that provide knowledge-
intensive technical services to oil and gas (O&G) operators are under pressure to deliver …

NDE sensor delivery using unmanned aerial vehicles

R Jarvis, A Farinha, M Kovac… - Insight-Non-Destructive …, 2018 - ingentaconnect.com
The robotic deployment of NDE sensors has great cost-saving potential in cases where the
measurement cost is high due to access restrictions or the need to temporarily …

Making sense of 3D printing/additive layer manufacturing in offshore petroleum industry: state of the art

RMC Ratnayake - International Conference on …, 2016 - asmedigitalcollection.asme.org
Three-dimensional printing (3DP)/additive layer manufacturing (ALM) allows the cost-
effective and fast fabrication of parts with intricate/complex external and internal structure via …