2021-03-252021-03-252019-03-26http://hdl.handle.net/10919/102793An example system includes at least one acoustic sensor configured to generate at least one acoustic data signal indicative of an acoustic signal generated by a thermal spray system comprising a flowstream, a computing device, and an acoustic data signal processing module operable by the computing device to determine an ignition attribute of the thermal spray system by analyzing at least a pre-ignition window of the acoustic data signal received by the computing device.application/pdfPatenthttp://pimg-fpiw.uspto.gov/fdd/91/410/102/0.pdf15172441B05B7/226B05B12/004G01N29/46G01N29/14G01N2291/02425G01N2291/0283610241091