Abstract: Provided is a sensor and method for weld defect detection. The sensor includes several piezoelectric elements which form a matrix arranged on a flexible substrate. Each piezoelectric element is covered with a damping block and surrounded by sound absorbing material, within a flexible protective film. The sensor is simple, highly adaptable and high detection efficiency, which is especially suitable for the quick in-service inspection of long distance welds in large equipment, it has high degree of automation.

Abstract: Provided is a sensor and method for weld defect detection. The sensor includes several piezoelectric elements which form a matrix arranged on a flexible substrate. Each piezoelectric element is covered with a damping block and surrounded by sound absorbing material, and packaged within a flexible protective film. The sensor is simple, highly adaptable and high detection efficiency, which is especially suitable for the quick in-service inspection of long distance welds in large equipment, it has high degree of automation.

Abstract: An adjustable clamp used for a marine deck welding test includes a supporting device, a guiding and positioning device and a clamping device; the guiding and positioning device comprises a plurality of guiding shafts, a plurality of guiding plates and a plurality of positioning rods, the guiding shafts located at the two sides of a working platform are detachably connected with supporting blocks, the guiding shafts penetrate through the guiding plates, the guiding plates can slide horizontally along the guiding shafts, at least one column of through-holes are formed in each guiding plate in the direction perpendicular to the sliding direction, the through-holes located at the central part are guiding plate bolt holes, the through-holes located at the two sides are guiding plate positioning holes, the positioning rods are placed in the guiding plate positioning holes, and the upper ends of the positioning rods are higher than the guiding plates; the clamping device comprises a plurality of pressing plates loca

Abstract: An adjustable clamp used for a marine deck welding test includes a supporting device, a guiding and positioning device and a clamping device; the guiding and positioning device comprises a plurality of guiding shafts, a plurality of guiding plates and a plurality of positioning rods, the guiding shafts located at the two sides of a working platform are detachably connected with supporting blocks, the guiding shafts penetrate through the guiding plates, the guiding plates can slide horizontally along the guiding shafts, at least one column of through-holes are formed in each guiding plate in the direction perpendicular to the sliding direction, the through-holes located at the central part are guiding plate bolt holes, the through-holes located at the two sides are guiding plate positioning holes, the positioning rods are placed in the guiding plate positioning holes, and the upper ends of the positioning rods are higher than the guiding plates; the clamping device comprises a plurality of pressing plates loca