Acoustic measurement methods in forced flow vortex dispersion within a paint manufacturing process

Witton, Caleb (2020) Acoustic measurement methods in forced flow vortex dispersion within a paint manufacturing process. [USQ Project]

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0.1 Introduction
In the paint making process, there are several elements that both critical, and there is not a test method that is available at scale to (Anderson 1991) verify that a particular colloidal suspension is in the specification required. While expensive laboratory equipment is available, this is not as common in the domestic coatings industry outside of Research labs. Using audio capture techniques (1995 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics 1995)to help automate existing practices can assist complementary control and testing techniques. An end-user could them extend on this type of arrangement could be integrated into existing control systems for a modest cost.

0.2 Background
Labour hours and electricity savings are key drivers. A typical process takes around 1hour of energy inputs greater than 50kW. Suppose the process does not go to plan. In that case, there is additional input energy required, which not only changes the cost of the process but also changes the surface energy of the product, which then interferes with the final specifications. Products outside of specifications need to have adjustments performed with expensive raw materials and additional labour and electricity inputs.

0.3 Methodology
In assessing the problem is was necessary to introduce methods to record all the critical parameters of the dispersion process that were under investigation. Investigations included the introduction of height measurement, video recording of the batch in question, audio recording and setting up equipment to record electrical and energy parameters involved in the process. Figure 1 shown an example unit. Key Outcomes Key outcomes were around the collection of data that was able to show in part that there was a relationship between the sound of a dispersion process. The shape of the vortex and the height of the blade all point towards a more structured relationship.

0.4 Further Work
Further work on this topic is the marrying up the collected vision from the camera collection equipment to the higher quality audio signals that were employed to determine if there are any relationships between the particular shape of the vortex and the specific sound output. While several results of this nature can be shown anecdotally there is limited hard data further works are needed. The focus of these further work would be to investigate the possibility that a mathematic relationship exists between the two features.

0.5 Conclusions
Using sound as a measurement parameter and collecting a recording of a colloidal dispersion process in the preparation of a paint making precursor is a partly accurate prediction of the ability of a sample from that batch to be considered 'right first time'. The result of this should be a decrease in the additional energy requirements of lab work to resolve and bring back into specification.

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Item Type: USQ Project
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors: Norman, Mark
Qualification: Bachelor of Engineering (Honours) (Instrumentation Control)
Date Deposited: 09 Aug 2021 01:32
Last Modified: 26 Jun 2023 04:58
Uncontrolled Keywords: paint manufacturing, paint manufacturing process, colloidal dispersion process, energy requirements

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