The summer of 2018, five NTNU students from the Department of Marine Technology and Department Mechanical Engineering were involved in a student project. The vision of the project was to create a unique learning platform by combining NTNU’s research vessel Gunnerus and its digital representation creating a digital twin.
Given the growth and pressure of digitalization in the shipping industry, digital twins of ships are highly relevant to utilize the collection of data and to combine existing models to describe a clear picture of the system.
The project was a collaboration between the Department of Marine Technology and Department of Mechanical Engineering at NTNU, DNV GL and Digitread. It resulted in a detailed 3D model of the entire vessel, a tool for displaying the different systems and components, as well as visualized sensor data from the vessel.
The digital twin consists of different building blocks that are integrated together:
· A detailed 3D model
· Sensor data and information
· Vessel/component information and documentation
The highly detailed 3D-model of the vessel was made in Siemens NX, before being exported to a web-based viewer. This viewer represents the visual part of the digital twin and is where the users can interact with the model. Users can select different components or sensors and get detailed information about the given part.
The model was then connected to information about the different sensors on board, as well as visualized historical data from these sensors. The model is also connected to the vessel product model (PMOD) that provides information about the different components on board. All of this is done on DNV GL’s shared and secure platform Veracity.
The idea for such a tool is, in addition to being a great visualization of the vessel and components on board, to perform a simulation with the model based on data coming from the vessel. This can be used in doing condition monitoring for different systems and components. Eventually, digital twins will be an enabler of product lifecycle management.
The project proved to be challenging but rewarding, and the project was a valuable learning platform for us summer students. Building a digital twin turned out to be a very versatile and broad project. We got to work with everything from 3D modeling, sensor naming and overview, data cleansing, visualization and analytics. It gave us a good insight into the big span of roles and tasks performed by engineers in such a project. This fall we will continue working on developing different use cases for the digital twin. Follow the development of this project here at TechZone.
All the authors of this post are students at NTNU:
Johan Fredrik Alvsaker: firstname.lastname@example.org
Magnus Borgersen: email@example.com
Lars Rasmus Oftedal Bjørum: firstname.lastname@example.org
Petter Selfors Rølvåg: email@example.com
Katarina Staalesen: firstname.lastname@example.org