Eroding ribbon thermocouples: impulse response and transient heat flux analysis

摘要: We have investigated a particular type of fast-response surface thermocouple to determine if it is appropriate use one-dimensional transient heat conduction model derive the flux from measurements temperature. With these sensors, low thermal inertia junctions are formed near by abrasive wear. Using laser excitation, we obtained impulse response commercially available devices. The sensors can vary new created Furthermore, was found deviate substantially and varied sensor sensor. simulated with greater fidelity using two-dimensional finite element model, but three-dimensional effects also appear be significant. impact variations on derived assessed for case in an internal combustion engine. When measured used flux, apparent reversal during expansion stroke does not occur.