Weld seam testing chain for testing a weld seam by means of ultrasound on two plastic tubes welded together at the ends, comprising standard chain links, wherein the standard chain links are hooked together to form the weld seam testing chain, and the chain can be lengthened or shortened individually, a sensor receptacle for accommodating the ultrasonic sensor, and an adjusting unit for the fine adjustment of the weld seam testing chain length, wherein the standard chain links have a hook on one side and a hook receptacle on the opposite side, thereby enabling the individual chain links to be hooked together.

A method of automatically inspecting a weld bead deposited in a plurality of passes in a chamfer formed between two parts by performing the following steps: positioning at least one emission electromagnetic acoustic sensor on one side of the chamfer and at least one reception electromagnetic acoustic sensor on an opposite side of the chamfer, the ultrasound wave emission sensor being configured to emit Rayleigh surface waves; while depositing a pass, automatically moving the sensors to follow the movement of welding electrodes along the chamfer; activating the sensors while they are moving to enable the emission sensor to generate and emit Rayleigh waves towards the pass of the weld bead that is being deposited, the reception sensor receiving the ultrasound signals transmitted and/or reflected in said pass; and reiterating the operation for the entire pass of the weld bead.

A process for determining the quality of a laser weld-seam, whereby a welded plate and a geometrically equivalent non-welded plate are subjected to a physical impact to generate a natural vibration frequency. The natural vibration frequency of the welded plate and the non-welded plate is then measured with an accelerometer and compared. The uniformity of the weld is then determined by the similarity between the natural vibration frequency of the welded plate and the geometrically equivalent non-welded plate.

A method and a system including a welding device, an inspection device having an inspection head having two sensors, a controller, and a memory for assessing a butt weld of plastic pipes or fittings in a welding device.

An inspection device inspects a joint-type outer joint member of a constant velocity universal joint that includes a cup section having a bottomed cylindrical shape and track grooves in an inner periphery thereof for torque transmitting elements, and a shaft section extending from a bottom of the cup section. The inspection device inspects the outer joint member, which is obtained through melt-welding on a cup member forming the cup section and a shaft member forming the shaft section. The inspection device includes a surface inspection unit to inspect for a defect which appears on a surface of the outer joint member due to welding, an internal inspection unit to inspect for an internal defect of a welded portion, and a recording unit to record an inspection result of the inspection. The inspection device is configured to efficiently perform in-line total inspection for the melt-welded joint-type outer joint member.

A phased array ultrasonic inspection system configured for weld inspection includes a data analysis process with automated and optimized gating to take into account the actual distance between a phased array probe and a weld line. The system embodies a weld tracking module and a dynamic gating module. The tracking module produces dynamically corrected overlays of the weld line based on the echo signals, the dynamically corrected overlays having a series of offsets from the corresponding initial overlays. The dynamic gating module purposefully positions a plurality of data analysis gates to filter out noise signals caused by sources unrelated to the weld, and to provide dynamic target gating adjusted by at least part of the offset.

An ultrasonic phased array detection device sequentially performing flaw detection testing on a welded joint of tubes arranged in a row. The ultrasonic phased array detection device includes: a flaw detection testing unit inserted into a target tube targeted for flaw detection testing among the tubes, and performing flaw detection testing on the welded joint of the target tube; a drive mechanism rotating the flaw detection testing unit around an axis of the target tube; and a jig to be inserted and fixed in a tube different from the target tube. The flaw detection testing unit has a flaw detection part incorporating a phased array probe performing ultrasonic phased array method, and has a pressing mechanism pressing the flaw detection part against an inner surface of the target tube.

A method for determining a quality of a friction stir welded seam is described. The method involves applying an impact to a welded plate and comparing its damping capacity with the damping capacity of a geometrically equivalent defect-free plate. Damping capacities that differ by a small percent difference indicate that the welded plate is also defect-free. This method is particularly advantageous when dealing with small defects, which produce miniscule changes in natural frequency which may not be measureable.

In an anti-biofouling context, an anti-biofouling system (20) is provided, which is configured to emit anti-biofouling light in an activated state thereof and to be applied to an object (10). Further, the anti-biofouling system (20) comprises a sensor system (30) that is configured to obtain measurement data relating to at least one structural feature of an anti-biofouling arrangement (1) including both the anti-biofouling system (20) and the object (10) in an actual case of the anti-biofouling system (20) being in place on the object (10). By having the sensor system (30) as mentioned in the anti-biofouling system (20), it is achieved that one or more structural aspects of the anti-biofouling arrangement (1) may be checked/monitored without a need for providing separate means for fulfilling such functionality.

A wedge for on-line inspection of a weld includes a wedge body defining a coolant channel and at least one couplant channel, and a coolant input port in fluid connection with a first end of the coolant channel. The wedge body has a surface for disposing a phased array ultrasonic transducer comprising an array of ultrasonic elements. The coolant channel is formed in proximity to the surface for disposing the phased array ultrasonic transducer such that coolant flowing through the coolant channel maintains the phased array ultrasonic transducer below a predetermined temperature without obstructing the array of ultrasonic elements.