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Digital Twin - What needs to be under the hood?

10/22/2017

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In the article Plant Information Management – Information Structures, and the following posts regarding Plant Information Management (see Archive) I explained in more detail the various information structures, the importance of structuring the data as object structures with interconnecting relationships to create context between the different information sources. 

​What does all of this have to do with the digital twin? - Let's have a look.

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​Information structures and their interconnecting relationships can be described by one of the major fashion word these days, the digital thread or digital twin.
The term and concept of a digital twin was first coined by Michael Grieves at the University of Michigan in 2002, but has since taken on a life of its own in different companies.
 
Below is an example of what information can be accessed from a digital twin or rather what the digital twin can serve as an entry point for:
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​If your data is structured in such a way with connected objects, attributes and properties, an associated three-dimensional representation of the physically delivered instance is a tremendously valuable asset as a carrier of information. It is however, not a pre- requisite that it is a 3D model, a simple dashboard giving access to the individual physical items might be enough. The 3D stuff is always promoted in the glossy sales representations by various companies, but it’s not needed for every possible use case. In a plant or aircraft, it makes a lot of sense, since the volume of information and number of possible entry points to the full data set is staggering, but it might not be necessary to have individual three-dimensional representations for all mobile phones ever sold. It might suffice to have each data set associated with each serial number.
 
On the other hand, if you have a 3D representation, it can become a front end used by end users for finding, searching and analyzing all connected information from the data structures described in my previous blog posts. Such insights takes us to a whole new level of understanding of each delivered products life, their challenges and opportunities in different environments and the way they are actually being used by end customers.
 
Let’s say that we via the digital twin in the figure above select a pump. The tag of that pump uniquely identifies the functional location in the facility. An end user can pull information from the system the pump belongs to in the form of a parametric Piping & Instrumentation Diagram (P&ID), the functional specification for the pump in the designed system, information about the actually installed pump with serial number, manufacturing information, supplier, certificates, performed installation & commissioning procedures and actual operational data of the pump itself.
 
The real power in the operational phase becomes evident when operational data is associated with each delivered pump. In such a case the operational data can be compared with environmental conditions the physical equipment operates in. Let’s say that the fluid being pumped contains more and more sediments, and our historical records of similar conditions tells us that the pump will likely fail during the next ten days due to wear and tear of critical components. However, it is also indicated that if we reduce the power by 5 percent we will be able to operate the full system until the next scheduled maintenance window in 15 days. Information like that gives real business value in terms of increased uptime.
 
Let’s look at some other possibilities.
If we now consider a full facility with a three-dimensional representation:
During the EPC phase it is possible to associate the 3D model with a fourth dimension, time, turning it into a 4D model. By doing so, the model can be used to analyze and validate different installation execution plans, or monitor the actual ongoing installation of the Facility. We can actually see the individual parts of the model appearing as time progresses.
 
A fifth dimension can also be added, namely cost. Here the cost development over time according to one or several proposed installation execution plans or the actual installation itself can be analyzed or monitored.
This is already being done by some early movers in the construction industry where it is referred to as 5D or Virtual Design & Construction.
 
The model can also serve as an important asset when planning and coordinating space claims made by different disciplines during the design as well as during the actual installation. It can easily give visual feedback if there is a conflict between space claims made by electrical engineering and mechanical engineering, or if there is a conflict in the installation execution plan in terms of planned access by different working crews.
More and more companies are also making use of laser scanning in order to get an accurate 3D model of what has been actually installed so far. This model can easily be compared with the design model to see if there are any deviations. If deviations are found, they can be acted upon by analyzing how it will impact the overall system if it is left as it is, or will it require re-design? Does the decision to leave it as it is change the performance of the overall system? Are we still able to perform the rest of the installation, due to less available space?
Answers to these questions might entail that we will have to dismantle the parts of the system that has deviations. It is however a lot better and cost effective to identify such problems as early as possible.
 
This is just great, right? Such insights as mentioned would have huge impacts on how EPC’s manage their projects, operators run their plants and how product vendors can operate or service their equipment in the field, as well as feeding information back to engineering to make better products.
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​New business models can be created in the likes of: “We sell power by the hour, dear customer, you don’t even have to buy the asset itself”!
(Power-by-the-Hour is a trademark of Rolls-Royce, although the concept itself is 50 years old you can read about a more recent development here)
 
So why haven’t more companies already done it?
 
Because in order to get there, the underlying data must be connected, and in the form of… yes data as in objects, attributes and relationships. It requires a massive shift from document orientation to connected data orientation to be at its most effective.
 
On the bright side, several companies in very diverse industries have started this journey, and some are already starting to harvest the fruits of their adventure.
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My advice to any company thinking about doing the same would be along the lines of:
When eating this particular elephant, do it one bite at the time, remember to swallow and let your organization digest between each bite.

Bjorn Fidjeland

The header image used in this post is by Elnur and purchased at dreamstime.com

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Digitalization - sure, but on what foundation?

4/7/2017

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The last couple of years I’ve been working with some companies on digitalization projects and strategies. Digitalization is of course very attractive in a number of industries:

  • Equipment manufacturers, where digitalization can be merged with Internet Of Things to create completely new service offerings and relationships with the customers
  • Capital projects EPC’s and operators, where a digital representation of the delivery can be handed over as a “digital twin” to the operator , and where the operator can use it and hook it up to EAM or MRO solutions to monitor the physical asset real-time in a virtual world. The real value for the operator here is increased up-time and lower operational costs, whereas EPC’s can offer new kinds of services and in addition mitigate project risks better.
  • Construction industry, where the use of VDC (Virtual Design & Construction) technology can be extended to help the facility owner minimize operational costs and optimize comfort for tenants by connecting all kinds of sensors in a modern building and adjust accordingly.
But hang on a second: If we look at the definition of digitalization, at least the way Gartner views it

“Digitalization is the use of digital technologies to change a business model and provide new revenue and value-producing opportunities; it is the process of moving to a digital business.” (Source: Gartner)

…The process of moving to a digital business….

The digitalization strategies of most of the companies I’ve been working with focuses on the creation of new services and revenue possibilities on the service side of the lifecycle of a product or facility, so AFTER the product has been delivered, or the plant is in operation.
There is nothing wrong with that, but if the process from design through engineering and manufacturing is not fully digitalised (by that I do not mean documents in digital format, but data as information structures linked together) then it becomes very difficult to capitalize on the promises of the digitalization strategy.
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Consider 2 examples
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Figure 1.
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Figure 1 describes a scenario where design and engineering tools work more or less independently and where the result is consolidated in documents or excel before communicated to ERP. This is the extreme scenario to illustrate the point, and most companies have some sort of PDM/PLM or Engineering Register to perform at least partial consolidation of data before sending to ERP. However I often find some design or engineering tools operating as “islands” outside the consolidation layer.

So if we switch viewpoint to the new digital service offering promoted to end customers. What happens when a sensor is reporting back a fault in the delivered product? The service organization must know exactly what has been delivered, where the nearest spare parts are, how the product  is calibrated etc. to quickly fix the problem with a minimum use of resources in order to make a profit and to exceed customer expectation to gain a good reputation.
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How likely is that to happen with the setup in figure 1?

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Figure 2.
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The setup in figure 2 describes a situation where design and engineering information is consolidated together with information regarding the actually delivered physical products. This approach does not necessarily dictate that the information is only available in one and only one software platform, however the essence is that the data must be structured and consolidated.

Again let’s switch viewpoint to the new digital service offering promoted to end customers. What happens when a sensor is reporting back a fault in the delivered product?
When data is available as structured and linked data it is instantly available to the service organization, and appropriate measures can be taken while informing the customer with accurate data.
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My clear recommendation is that if you are embarking on a digitalization journey to enhance your service offering and offer new service models, then make sure you have a solid digital foundation to build those offerings on. Because if you don’t it will be very difficult to achieve the margins you are dreaming of.
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Bjorn Fidjeland


The header image used in this post is by kurhan and purchased at dreamstime.com
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From digital archive to intelligent data

6/7/2015

1 Comment

 
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A lot of companies these days are working hard to turn their big digital archives into more intelligent data. These initiatives usually comes from some kind of digitalization strategy that has been formed to support a vision.

We see it every day, data is power, data can be analyzed, used in different contexts to support end customers, to sell new services or support internal processes in the company. 

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However, for this to happen it is not enough so simply store and manage data in digital format. The data must be “connected”, stored in object or information structures that represents the data used in different contexts. Coming from a PLM background, some of the aspects are quite easy to identify. From a product perspective you’ve got a requirements breakdown structure, maybe a model configuration or variant structure, an engineering bill of material that represents the design intent and supporting CAD structures from various design tools. All of the structures mentioned are being managed today as digital information, but very few companies have structured the information and put it all in context of the other information structures to achieve full traceability and change consequence control.

Note, I’ve so far only touched the product design aspect, so when considering the manufacturing intent (the manufacturing bill of material), the manufactured product, the sold product and the installed product the complexity grows, but so does the benefits of managing it all as connected data structures stored in context of each other. This data can be used to sell services to the end customers.

Examples could be a pump manufacturer who has full traceability on all pumps sold to different facilities. The pump manufacturer could offer services for maintenance of the pumps, and if the pump contains different sensors, the manufacturer could also analyze operational data to schedule preventive maintenance. This data could then serve as valuable input to the design processes of new and even better pumps. As a consequence of the fact that all data structures are connected, the pump manufacturer knows the location of all pumps sold, and can offer the new and improved model not only to all customers, but to all customers and all the locations for each customer.

All of a sudden we are touching one of the biggest fashion words these days “the Internet Of Things”, because what would happen if a large portion of the pumps were installed on ships and they contained sensors? The pump manufacturer could set up maintenance offices in large ports. Knowing exactly what pumps would arrive in what ports, at what times and what maintenance need they have would allow the manufacturer or service provider to order the right spare parts just in time and to reduce the maintenance time. This would minimize the risk of fines by the ship owners because the ship had to stay in port longer than scheduled or even worse, having the service personnel performing the service at sea and thereby leaving the service office in the port severely under manned.

This is only one example of the power of “connected data” or digitalization. Quite a few companies have similar business models as our pump manufacturer, but very few have the opportunity to utilize the services by “connected data”. Instead there are a lot of manual work, interpretation and searching for data in different digital archives. This in turn leads to errors, misunderstandings and lost business opportunities.

 Some points to ponder

Bjorn Fidjeland


All images used in this post are purchased at dreamstime.com

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