Monitoring of Argon plasma in a coating manufacturing process by utilising IR imaging techniques Thermal Camera Recordings (CSQ Files)

Description

This dataset contains the thermal imaging recordings made during the experiments investigating the effect of gas flow rate on the shape of the plasma. The index at the end of the file name denotes the order they were taken. The plasma tool head is positioned on the right of the image with the plasma and powder travelling from the right to the left of the image.

File Format

The recordings are in FLIR's Compressed Sequence File format called CSQ. The recordings were made with the emissivity set to 0.94 as the true emissivity was not known at the time. It is recommended to get FLIRs tools to change the emissivity and observe the effects. CSQ files can be viewed with a free license for FLIR Thermal Studio but a paid license is needed to extract temperature values to make the NPZ files uploaded at https://doi.org/10.15131/shef.data.25335319. The metadata of the files (date, time, recording parameters etc.) can be extracted with a tool called exiftool; a custom class has been written as part of the project for inspecting these files and extracting the raw values. The specification is commonly used in thermal imaging.

Process Parameters

• sheffield_doe_flowrate_gasrate_0001: 30V, 500A, 40 SL/MIN
• sheffield_doe_flowrate_gasrate_0002: 30V, 500A, 40 SL/MIN
• sheffield_doe_flowrate_gasrate_0003: 30V, 500A, 50 SL/MIN
• sheffield_doe_flowrate_gasrate_0004: 30V, 500A, 60 SL/MIN
• sheffield_doe_flowrate_gasrate_0005: 30V, 500A, 70 SL/MIN
• sheffield_doe_flowrate_gasrate_0006: 30V, 500A, 80 SL/MIN
• sheffield_doe_flowrate_gasrate_0007: 30V, 500A, 80 SL/MIN
• sheffield_doe_flowrate_gasrate_0008: 30V, 500A, 80 SL/MIN

Recording Notes

• sheffield_doe_flowrate_gasrate_0001: First run failed due to camera running out of battery
• sheffield_doe_flowrate_gasrate_0002: Good run
• sheffield_doe_flowrate_gasrate_0003: Starts with PULSE material flow rate rather than fixed
• sheffield_doe_flowrate_gasrate_0004: Powder level running low. May affect contrast and luminosity
• sheffield_doe_flowrate_gasrate_0005: Stopped early due to loss of power to recording PC
• sheffield_doe_flowrate_gasrate_0006: Ran out of gas
• sheffield_doe_flowrate_gasrate_0007: Redo of sheffield_doe_flowrate_gasrate_0006
• sheffield_doe_flowrate_gasrate_0008: Start of the recording had recording range set to 20 C - 120 C range and was corrected part way through.