Abstract: The present disclosure relates to the technical field of piezoelectric ceramics polarization, and particularly relates to a high-temperature polarization method for strip-shaped or rod-shaped piezoelectric ceramics. The piezoelectric ceramics are heated to a temperature above a Curie temperature point in a closed polarization environment, and an electric domain turning resistance of the piezoelectric ceramics is reduced to a preset value. Voltages are applied to two ends of the piezoelectric ceramics, and an electric domain orientation of the piezoelectric ceramics are converted, through a temperature reduction and pressure increase method, to be consistent with a direction in which an electric field is applied. The piezoelectric ceramics are cooled to a room temperature, and polarization is completed. According to the method, voltages applied to two ends of a piezoelectric fiber can be reduced by reducing internal resistance of the piezoelectric fiber.

Abstract: The present disclosure relates to a method for ultrasonic guided wave quantitative imaging in a form of variable array and belongs to the technical field of ultrasonic non-destructive testing. The method includes: converting a non-linear lippmann-Schwinger equation into a form of linear summation by a method of moments; and selecting acquisition arrays with different numbers of probes to measure a scattered field signal, and modifying Green's functions by variable born approximation for continuous iterations to approximate a true solution, so as to obtain a final objective function Ok to be solved. According to the present disclosure, by adjusting the arrays, the number of probes and appropriate solution algorithm can be selected based on the testing accuracy; and the method can achieve quantitative evaluation of non-destructive testing, and can be widely used in practical guided wave testing applications of industrial non-destructive testing.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.

Abstract: A packaging assembly is provided with a base that is sized to receive at least one shower door glass pane. At least one shower door glass pane is received within the base. A handle is mounted to the base. A plurality of projections extends from a bottom surface of the base to rest upon an underlying support surface and to reduce friction between the packaging assembly and the underlying support surface. The base includes a box with an opening formed in opposed surfaces of the box to expose a portion of the at least one shower door glass pane.