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An elastic cloud is a cloud computing offering that provides variable service levels based on changing needs. Elasticity is an attribute that can be applied to most cloud services. It states that the capacity and performance of any given cloud service can expand or contract according to a customer's requirements and...
A method of ultrasonic testing of cable termination insulation defects
This invention relates to the field of non-destructive testing technology for power equipment, specifically disclosing an ultrasonic testing method for insulation defects in cable terminals. This method excites shear waves in the insulating material using focused ultrasonic pulses, synchronously receives the echo signals using a multi-channel ultrasonic array, calculates the shear wave propagation velocity, and inverts the spatial distribution of the elastic modulus to construct a three-dimensional elastic cloud map. Then, combined with a pre-set constitutive mapping model, the hardness distribution is transformed into an assessment result of the insulation performance degradation state. By employing the above technical solution, this invention can quantitatively characterize the non-uniformity of material mechanical properties, predict potential failure areas before defects appear, improve the detection capability and assessment accuracy of early insulation degradation, and provide a reliable basis for preventive maintenance of power equipment.
Owner:STATE GRID SICHUAN ELECTRIC POWER COMPANY NEIJIANG POWER SUPPLY