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2730results about How to "Wide temperature range" patented technology

Test device for simulating and testing thermal fatigue failure of high-temperature part in real time

The invention belongs to the field of high-temperature part detecting equipment, in particular to a test device for simulating and testing the thermal fatigue failure of a high-temperature part in real time. The device mainly comprises a high-temperature gas two-way heating system, a real-time temperature testing and collecting system, a cooling system, an ARAMIS non-contact three-dimensional deformation test system, a PCI-2 AE non-destructive detection system, a 1260+1296-type material electric property AC impedance spectroscopy test system, a test control platform and the like. The device can simulate the thermal fatigue work environment of alternating temperature cycle in a high-performance aircraft engine, and synchronously realize the real-time testing and the analysis to the sample temperature, temperature gradient, surface morphology image evolution, three-dimensional deformation field, three-dimensional displacement field, interfacial oxide layer and thickening law, thermal fatigue crack initiation and propagation, cooling gas flow and other data. The device can provide an important experimental platform for effectively evaluating the fatigue failure process and the failure mechanism of the high-temperature part in the high-temperature thermal cycle environment.
Owner:XIANGTAN UNIV

Measurement method for estimating actual available capacity by SOC (state of charge) of power battery set

The invention discloses a measurement method for estimating actual available capacity by an SOC (state of charge) of a power battery set, belonging to the technical field of management of a power battery or the power battery set. The measurement method aims at solving a problem of high uniformity difference of the battery sets in an electric vehicle and a hybrid vehicle when in use, and to provide the measurement method for estimating the actual available capacity by the SOC of the power battery set. The actual available capacity of the power battery set is determined by monitoring voltages of batteries in the power battery set in charging and discharging processes according to situations that a highest voltage reaches an upper limit cut-off voltage in the charging process and a lowest voltage reaches a lower limit cut-off voltage in the discharging process, and actual charging and discharging cut-off voltages of the power battery set can be determined. A test proves that the actual available capacity of the batteries is determined by the measurement method and the batteries in the power battery set are good in voltage uniformity. The measurement method is suitable for measuring the actual available capacity of the power set in the electric vehicle and the hybrid vehicle.
Owner:HARBIN INST OF TECH

Testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades

The invention discloses a testing device for simulation and real-time detection of erosion of thermal barrier coatings of turbine blades, belonging to the field of simulation devices in a special service environment. The testing device comprises an erosion particle feeding system, a test testing platform (1), a temperature test system, an acoustic emission nondestructive testing system, a control platform and the like. An erect fixed shaft (101) is arranged on the test testing platform (1) and is connected with a horizontal supporting shaft. The testing device can be used for simulating the erosion service environment in which hard particles in a high-performance aero-engine repeatedly impact thermal barrier coatings of turbine blades due to the driving of airflow. By controlling the parameters such as erosion speed, angle, size and the like of erosion particles, the process that the coatings are eroded by different hard particles in the service process is realized and the real-time test and analysis of data, such as the temperature, the surface topography evolution, the interfacial oxidation of a sample and the like can be synchronously realized. The device can provide an important test platform for effectively assessing the erosion failure process and the failure mechanism of coatings of turbine blades in the special service environment.
Owner:XIANGTAN UNIV
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