Jiangsu University

Zhenying Xu

Yun Wang

Fuzhu Li

Kun Zhang

Peiyu He

Ying Yan

Yun Bai

Xiaolong Zhang

Hao Yu

Sumin Yin

Xuepeng Wang

Lihui Ren

Wang Ni

Jinxing Du

Dongyan Wan

Hong Hong

Han Du

Weili Liu

Xu Ding

A rapid detection tool for a coaxial relationship based on a photosensitive material and a detection method using the same are used to detect coaxiality of two through-holes in the same workpiece to be detected. An image processing unit and a control unit are mounted outside a light-shielding box. Light sources, cameras, sensors, and an air cylinder are mounted in the light-shielding box. A photosensitive plate coated with a photosensitive resin is placed between the two holes, and two sides are irradiated by the light sources. Coordinates of centers of circular patterns formed on the photosensitive plate are calculated so that a coaxial relationship between the two holes can be accurately obtained. An output rod of the air cylinder is controlled to extend outward to reject a workpiece to be detected not meeting requirements.

Rapid detection tool for coaxial relationship based on photosensitive material and detection method using same

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.

Flexible sensor with piezoelectric array applied for weld defect detection based on feature guided waves and its testing method

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 located on the upper parts of the guiding plates and provided with pressing plate bolt holes corresponding to the guiding plate bolt holes, and the pressing plates are connected with the guiding plates via bolts. The clamp provided in the present invention has advantages including simple structure, easy operation, low cost, accurate positioning, and the positioning points and the clamping force can be adjusted at will.

Adjustable clamp used for marine deck welding test

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Jiangsu, China

Zhenying Xu